You are reading the article How To Insert The Value Specified In The Head List? updated in February 2024 on the website Eastwest.edu.vn. We hope that the information we have shared is helpful to you. If you find the content interesting and meaningful, please share it with your friends and continue to follow and support us for the latest updates. Suggested March 2024 How To Insert The Value Specified In The Head List?Introduction to Redis LPUSH
Redis LPUSH is used to insert the value specified in the head list and saved it in the key. If the key does not exist, it will create an empty list before performing the LPUSH operations. When a key contains a value that is not in the list, an error is returned. When we use LPUSH, we use the lrange method.
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Web development, programming languages, Software testing & othersKey Takeaways
While using redis LPUSH command, it is possible to insert single as well as multiple values in a single command.
The list is used by Redis LPUSH to store the value. When inserting data into the redis key, we only used the key type as a list.What is Redis LPUSH?
The redis LPUSH command inserts the specified values that were heading in the value from the specified key. Using redis LPUSH, we can push multiple elements with a single command; we simply need to specify the arguments at the end of the command. Using redis LPUSH, elements will be inserted one by one, with the last element inserted at the top of the list, from leftmost to rightmost. If we insert x, y, and z elements, the output will have z in the first position, y in the second position, and x in the last position.
Syntax:LPUSH name_of_key val1 …. ValN
We can insert multiple elements of values into a single command by using LPUSH. LPUSH is the command used to insert the values in the syntax above. When using the LPUSH command, we must specify the key that will be used to store the element. When we use the LPUSH command, we only use one key. Value is the parameter that was used to define the value when using the redis LPUSH command.How to Use Redis LPUSH?
To use it we are using the ubuntu system for installing the redis server. While using the LPUSH we need to install redis server in our system.
Code:# apt install redis-server # redis-server --version
2. While using redis LPUSH now in this step we are login into the redis database by using the below command as follows. While executing the LPUSH command we need to login into redis cli by using the redis-cli command as follows.
3. Now in this step we are using the redis LPUSH method to insert the element. In the below example, we are using single key and single value to use the redis LPUSH command.
Code:LPUSH key_lpush "lpush_val1"
4. As we can see in the above example, we have used the key name as “key_lpush” and defined value as “lpush_val1”. Now in this step, we are adding a new value to the key name as key_lpush as follows.
Code:LPUSH key_ lpush " lpush_val2"
5. While adding the value into the key, now in this step we are using the LRANGE command to retrieve the element which we have defined. The below example shows how we can retrieve the value by using lrange which was defined in LPUSH as follows.
Code:LRANGE key_lpush 0 -1
Output:Redis LPUSH Command
The Redis LPUSH command is useful for inserting values because it allows us to insert single and multiple values in the same command. The command has been available since version 1.0.0. After the push operations are completed, the command will return the integer that was responding to the list length. The LPUSH command’s return value type is an integer. Basically, the LPUSH command adds a new element to the list’s left side.
Code:LPUSH redis_lpush "val1" LPUSH redis_lpush "val2" LRANGE redis_lpush 0 1
If we have already created a key with the type string, we cannot add the element by using LPUSH into the specified key. It will return the error that the key has the incorrect value. In the following example, the key contains a string value, and we add an integer value, resulting in an error.
Code:LPUSH color 1 TYPE color
We can insert the data into the key when it holds the type as list. In the below example, the key name redis_LPUSH1 is holding the type as list, so we can be able to insert the element into the specified key.
Code:Type redis_lpush1 LPUSH redis_lpush1 "val" LRANGE redis_lpush1 0 1
The below example shows how we can insert multiple elements by using the LPUSH command as follows. In the example below, we can see that it works the same as when inserting a single element. In the below example, we are inserting val1, val2, and val3 elements respectively, but we can see that it will retrieve the element as val3, val2, and val1 respectively.
Code:LPUSH redis_lpush2 val1 val2 val3 LRANGE redis_lpush2 0 2
Output:Examples of Redis LPUSH
Given below are the examples mentioned:Example #1
In the example below, we are inserting a single element. As shown below, we define the key name as color1 and the value as white. We are also retrieving the value using the lrange method.
Code:LPUSH color1 "white" LRANGE color1 0 1
In the example below, we are inserting a single element. As shown below, we define the key name as color1 and the value as blue, red, and yellow. We are also retrieving the value using the lrange method.
Code:LPUSH color1 "blue" "red" "yellow" LRANGE color1 0 2 LRANGE color1 0 3
In the below example, we are adding two integer elements by using LPUSH.
Code:LPUSH integer_key 11 13 LRANGE integer_key 0 2
The redis LPUSH command inserts the specified values that were heading into the value from the specified key. It is possible to push multiple elements with a single command by using it. It is used to insert the value specified in the head list and saved it in the key.Recommended Articles
This is a guide to Redis LPUSH. Here we discuss the introduction, to how to use redis LPUSH? and examples respectively. You may also have a look at the following articles to learn more –
You're reading How To Insert The Value Specified In The Head List?
You will encounter the “The specified network name is no longer available” error while trying to access a network resource such as Network Attached Storage, a remote device, or the server/Domain Controller (DC) itself. This issue can also occur on the server side if the controller tries to access such resources, add users to the domain, or while trying to promote the DC.
Usually, it means that the resource is no longer available or the admin has imposed restrictions on your device regarding such access. They may also have taken down the server. But the issue may also occur unintentionally due to various other reasons.
If the network resource is no longer online or available, there’s nothing you can do to access it unless the admin decides to make it available again. However, for the latter case, there are many possible solutions you can try out on your client device or the server side.
Apart from the server admin tampering with the network resource, here are some possible causes for the above error:
The necessary protocol is disabled.
Required ports not being open.
Security applications clocking access to the network resource.
Issues with the user folder of the application, such as incorrect permission, compression, or encryption.
The domain controller not fulfilling the necessary conditions before promotion.
Bugs in the network access software.
Some of the possible solutions below require you to have access to the network server or domain controller. If you don’t have access, you need to contact the system admin and have them perform such operations. Other solutions require you to make changes to your own computer, which you can do without any issues.
A network uses the Server Message Block (SMB) protocol to provide access to shared resources attached to the same network. Currently, only SMB v2 or v3 is used, and SMB v1 is already deprecated. So, many devices do not have SMBv1 enabled by default and instead opt to use the later versions.
However, it is possible that these protocols are not enabled on either the client side or the server. So, you need to do so manually to resolve your issue. SMBv3 and v2 use the same stack, so you only need to enable SMBv2 to use either protocol.
On Client Side
Open Run by pressing Win + R.
Type cmd and press Ctrl + Shift + Enter to open the Elevated Command Prompt.
Enter the following commands:
sc config lanmanworkstation depend= bowser/mrxsmb20/nsi
Restart your PC
On Server Side
Press Win + R to open Run.
Type powershell and press Ctrl + Shift + Enter to open Windows PowerShell.
Restart the PC if you used the Set-ItemProperty command
Just enabling SMBv2 may not be enough. If you have enabled both SMBv1 and v2/v3 on your system, but the server only enables SMBv2/v3, your device may erroneously try using the SMBv1 channel instead.
So, you need to disable it on your client side in such a scenario.
Open the Elevated Command Prompt.
Type the following command and press Enter after each:
sc config lanmanworkstation depend= bowser/mrxsmb20/nsi
Restart your PC to apply the change.
In rare cases, the server may only support SMBv1 but have it disabled while enabling SMBv2/v3. So if you can’t resolve the issue after performing all previous steps and the earlier solution, you may need to enable SMBv1 on the server along with your client system.
To enable it on the server,
Open the Elevated PowerShell.
For previous OS versions, use Set-ItemProperty -Path "HKLM:SYSTEMCurrentControlSetServicesLanmanServerParameters" SMB1 -Type DWORD -Value 1 -Force instead.
To enable it on the client,
Open the Elevated Command Prompt.
Enter the commands below:
sc config lanmanworkstation depend= bowser/mrxsmb10/mrxsmb20/nsi
You can encounter this issue while accessing the network name through any protocol. Each protocol needs different ports to initiate and continue the connection. So you need to make sure the corresponding ports are open to avoid the above error.
First, search for the ports you need from the internet or official sources. Then, follow the steps below to check these ports:
Type wf.msc and press Enter to open Windows Defender Firewall with Advanced Security.
Check Allow the connection and hit Next.
Select the types of the network where this rule applies and select Next.
Third-party security software such as antivirus and network scanners can also block access to or from a network resource. You can try temporarily disabling the security on the client side or the host side to prevent this issue.
However, keep in mind that the software is there for the protection of your system. So, you need to make sure that the resource is not really dangerous before disabling the real-time or network security.
On the other hand, you can also add the network resource or user to the exclusion list to resolve the error without disabling such software. If you don’t have access to the server, you can ask the system admin if the server needs to create an exception.
If you are suffering from this issue while using an application, such as Windows Subsystem for Linux, it might be because of some issues with the application’s user folder inside AppData. One of the possible causes is incorrect permission settings. It hinders the app from accessing the user folder and prevents access to a network resource.
You can resolve this issue by resetting the permissions of the AppData folder.
Type cmd and press Ctrl + Shift + Enter to open the Elevated Command Prompt.
Another possible issue with the application’s user folder involves your system compressing or encrypting the folder. While some applications work in such a scenario, there are many others that do not.
So you need to disable the NTFS compression or encryption from the folder. To do so,
Search for the application user folder inside this folder.
If it is an app provided by Microsoft, you need to Look inside AppDataLocalPackages. For instance, if you encounter this error while using Windows Subsystem for Linux, the folder name inside Packages will be that of the Linux distros.
You can also try completely uninstalling the network access apps where you encounter this error and then reinstall the latest version to resolve the issue. Doing so also accounts for any possible bugs present in the app itself.
Type appwiz.cpl and press Enter to open Programs and Features.
Look for your application and select it.
Follow the instructions in the uninstaller.
Then, open Run again.
Type %localappdata% and press Enter to enter the AppDataLocal folder.
Search for the application user folder inside this folder.
Delete the user folder.
Now, reinstall the application and see if you still encounter the error.
If you encountered this error while trying to promote the Domain Controller on servers older than Windows Server version 1709, it’s because the older File Replication Service (FRS) is no longer supported. You need to migrate from FSR to DFSR, and the domain functional level needs to be 2008 or higher to resolve this issue.
It is not feasible to include all the necessary steps in this article. So, recommend following the dedicated migration guide provided by Microsoft or a Microsoft Tech Community user’s streamlined guide to migrate to DFSR.
If you encountered this error while running a self-created program that accesses a network resource, it is likely that there’s an issue with your coding.
Since there are many possible places where such bugs can occur, the most common ones are as follows:
Trying to write into a stream that is already closed by the remote peer will cause this issue. So, you need to make sure not to close the stream or not allow the peer to close the stream unless the data transfer or communication is complete.
Another reason is the set or default timeout period being too low that the time taken to complete the query or communication. You simply need to extend this period to resolve the issue.
There may also be other errors in your code. We recommend you upload it to forums like StackOverflow and seek help from fellow users.
Typing arrows in Microsoft Word does not have to be a chore. The application has provided multiple ways for users to accomplish this task, and we’re going to talk about how to insert an Arrow symbol in a Word document
Arrows are useful symbols for getting across information more efficiently than normal. This can save folks from typing long explanations when a simple arrow could suffice. Now, not everyone who uses Microsoft Word knows how to get this done, but believe us when we say that it doesn’t take much.How to insert an Arrow symbol in Word document
We’re going to show you how to insert an Arrow symbol in a Word via AutoCorrect, Shortcuts, and Symbols, so the following solutions should help:1] Use the AutoCorrect feature to insert an Arrow symbol in a Word
OK, so the first thing to do here is to try and use the AutoCorrect feature in Microsoft Word to type arrows. From our point of view, this is probably the fastest way to get the job done, well, when it works because there are rare times when it doesn’t.
So, let us look at how to do this right now:
Open the Microsoft Word application, then launch into a new document or an old one.
Move the mouse cursor to the location in the document where you want the arrow to appear.
Now, type the relevant combination of characters to create arrows.2] Create arrows in Word using Shortcuts
Let’s assume that AutoCorrect in its default form does not produce the type of arrows you need. You can always create a keyboard shortcut for Emoji in Office apps
This will help you add your own arrows that are not found by default in Microsoft Word.3] Type arrows using special characters in Word
For those who are wondering, the option is there to type arrows by the means of special characters. We do not view this as the ideal way, but there are some arrows from the section of the special character that cannot be brought to the forefront via AutoCorrect.
To learn how to get this done, please read our post on how to use Special Characters and Letters.4] How to type Arrows using equation mode in Word
Microsoft Word has an equation mode that makes it possible for users to use mathematical symbols. With this feature, users can insert arrows into their documents, so let us look at how to get this done.
Place the mouse cursor where you want the arrow to appear.
Next, you must press the Alt+= buttons to fire up the equation mode section.
You must now type a Backslash along with the relevant Math AutoCorrect shortcut.
Press the Space button and the shortcut text will transform into a specified arrow.
The following are examples of shortcuts you can use, along with what the arrows look like:
READ: 10 Default Microsoft Word settings you need to changeWhy can’t I use Arrow keys?
If you are having problems with using the arrow keys on your keyboard, then chances are it has something to do with the turning on of the scroll lock feature. Look for the scroll lock button on your computer keyboard to see if it is enabled. If this is the case, the button usually lights up, so disable it promptly.How many Arrow keys are there?
There are a maximum of eight arrow keys on a full-sized keyboard. On other types of keyboards, the number sits at four, and that’s fine since most computer users have no need for using eight arrows. But if that is not the case, then purchasing a new keyboard is always an option.
Note: This method requires some meddling with the code. If you are not comfortable dealing with the code, don’t attempt it. You might also want to create a staging site of your blog and test this method on the staging site first before making it live.
Here is the method:
1. In your theme folder, open the functions.php file with a text editor.add_filter
Remember to change the “insert_ad_code_here” string to the actual ad code. Also, if there is any instance of single quote (‘) in your ad code, you have to add a before it. For example, if your ad code is something like:
What we are doing with this function is to take the content for each post and break it up into each paragraph. We then detect whether the third paragraph exists. If yes, we insert the ad code to the end of the paragraph. Lastly, we insert back the starting paragraph tag to each section and glue them back into a complete article.
Things you can change here include:
1. The paragraph to insert the ad tag. The default in the above code is the third paragraph. You can change to the second paragraph by changing all instances of $content_block to $content_block.
Note: The count of the array starts from 0, so $content_block means the third paragraph instead of the second.
3. The ad code. You don’t necessarily have to insert ad in-between the content. You can insert newsletter subscription form or any other stuff that you deem appropriate for your site.
Lastly, don’t forget to save the file and upload it to the server. As I mentioned earlier, it is best to test this on a staging site first before making it live.
Damien Oh started writing tech articles since 2007 and has over 10 years of experience in the tech industry. He is proficient in Windows, Linux, Mac, Android and iOS, and worked as a part time WordPress Developer. He is currently the owner and Editor-in-Chief of Make Tech Easier.
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You can reverse a list in Excel by using:
A number list
The INDEX function
Let’s see all these methods in detail.1] How to reverse a list in Excel by using a number list
This is the easiest method to reverse a list in Excel. You just have to create a new column containing the numbers in ascending order and use this column to reverse the list. Let’s see how to do that.
We have created sample data and filled each row with a different color so that we could see if the data in the rows remains the same after reversing the columns. You can see the sample data that we have created in Excel in the above screenshot.
Now, create a new number list in the next adjacent column (see the above screenshot). You have to use this number list to reverse the list in Excel. Excel will treat this number list as a reference to display the desired output.
To do so, follow the steps written below:
Select the entire range of data along with the header.
Select the Data tab.
The Sort dialog box will appear. In the Sort by drop-down, select the name of the header (in our case, it is Number List).
In the Sort On drop-down, select Values.
Select Largest to Smallest in the Order drop-down.
After performing the above steps, the list will be reversed. This is how you can reverse a list in Microsoft Excel by creating a reference number list.
Read: List of best free Excel Add-ins you should be using.2] How to reverse a list in Excel by using the INDEX function
Let’s see how you can reverse a list in Excel by using the INDEX function. Here, we have a sample list containing the names of the persons and we want to reverse this list.
The format of the formula to reverse a list in Excel by using the INDEX function is as follows:=INDEX(data range,ROWS(rows range))
Let’s see how to use the above formula. First, select the column in which you want to display the result. Now, copy the header to a cell of that column. We have selected column C and typed the formula to C2.
In our case, we want to reverse the list containing the names in the cell range A2 to A11. Hence, the formula is:=INDEX($A$2:$A$11,ROWS(A2:$A$11))
In the above formula, INDEX($A$2:$A$11) represents the range of the cells containing data to be reversed. The $ sign is used to lock a particular cell in Excel. Here, we have locked the entire range of data. Now, to reverse the list, we have to provide a reference cell to Excel. For this, we have used the ROWS(A2:$A$11) function. In this function, we have locked the A11 cell. Now, Excel will use this cell as a reference cell and treat it as the first cell when it comes to reversing the list. So, in the above formula, only the value without the $ sign will change and the rest of the values will remain locked.
Above, we have seen how to reverse a single list in Excel using the INDEX function. What if you want to reverse a list having data in multiple columns? In this case, you have to use one more function, COLUMNS. Let’s see how to do that. We have created sample data with three columns.
First, select the columns in which you want to display the result. In our case, we have selected columns E, F, and G to display the result. Now, copy the header to the first row of the E, F, and G columns. Select the first cell (after the header) of the first column and type the formula. The formula to reverse a list with data in multiple columns in Excel by using the INDEX function is as follows:=INDEX($A$2:$C$11,ROWS(A2:$A$11),COLUMNS($A$2:A2))
In the above formula:
INDEX($A$2:$C$11) represents the entire range of data and the $ sign represents the locked cell. Here, we have locked the entire range of cells containing data.
ROWS(A2:$A$11) represents the data in the rows from A2 to A11. Here, row A11 is locked as it will be treated as a reference row by Excel. When we copy this formula to other cells, only row A2 will change because it is not locked.
In the COLUMNS($A$2:A2) function, $A$2 is used as a reference cell. A2 represents column A2. When we copy the formula to the other columns, only the unlocked columns will change.
As described earlier, you need not copy the exact formula and paste it into Excel. If you do so, you may receive an error because your data is not the same as ours. Hence, type the formula according to your data. After typing the formula, press Enter and Excel will display the result in the targeted cell. To display the result, follow any one of the following methods:
First, copy the formula to all the cells in the first column. After that, copy the formulae from each cell of the first column to the other two columns.
First, copy the formula to all the cells of the first row. After that, copy the formulae from each cell of the first row to the remaining rows.
Let’s see how to do that. Here, we are using the first method.
The list in the first column has been reversed. Now, you have to copy the formula in all the cells of the first column to the other columns to reverse the list in respective columns. For this, place your cursor as shown in the above screenshot and drag it towards the right.
That’s it. All the lists in the three columns have been reversed. You can also reverse a list in Excel by creating a Macro. We have described this method below.
Read: How to get real-time Currency Exchange Rates in Excel sheet.3] How to reverse a list in Excel by using a Macro Sub ReverseList() End Sub
The ReverseList is the name of the Macro in the above text.
Now, copy the code written below and paste it into the Visual Basic window.Dim firstRowNum, lastRowNum, thisRowNum, lowerRowNum, length, count As Integer Dim showStr As String Dim thisCell, lowerCell As Range With Selection firstRowNum = .Cells(1).Row lastRowNum = .Cells(.Cells.count).Row End With showStr = "Going to reverse rows " & firstRowNum & " through " & lastRowNum MsgBox showStr showStr = "" count = 0 length = (lastRowNum - firstRowNum) / 2 For thisRowNum = firstRowNum To firstRowNum + length Step 1 count = count + 1 lowerRowNum = (lastRowNum - count) + 1 Set thisCell = Cells(thisRowNum, 1) thisCell.Select ActiveCell.EntireRow.Cut Cells(lowerRowNum, 1).EntireRow.Select Selection.Insert ActiveCell.EntireRow.Cut Cells(thisRowNum, 1).Select Selection.Insert End If showStr = showStr & "Row " & thisRowNum & " swapped with " & lowerRowNum & vbNewLine Next MsgBox showStr
Hope this helps.
Read: How to Lock and Protect Cells in Excel from editing.How do you change the direction of a list in Excel?
You can change the direction of a list in Excel by creating a reference number list and then sorting it in decreasing order, by using the INDEX function, and by creating a Macro. Out of these three methods, the first one is the easiest method to reverse a list or change the direction of a list in Excel.How do I reverse rows and columns in Excel?
You can reverse rows and columns in Excel by creating a reference number list. You have to create this reference list separately for both rows and columns to reverse them in Excel. We have explained how to use the number list to reverse a list in Excel above in this article.
Read next: Microsoft Excel Online tips and tricks to help you get started.
In today’s article, you’ll learn how to use some keyboard shortcuts and other methods to type or insert the Phone Symbol (text) in MS Word for Windows.
Just before we begin, I’ll like to tell you that you can also use the button below to copy and paste the Phone symbol text into your work for free.
However, if you just want to type this symbol on your keyboard, the actionable steps below will show you everything you need to know.
To type the Phone Symbol on Word for Windows, simply press down the Alt key and type 9743 using the numeric keypad, then let go of the Alt key. This shortcut can work only on MS Word.
The below table contains all the information you need to type this Symbol on the keyboard on Word for Windows PC.
Symbol NamePhone SignSymbol Text☏Alt Code9743Shortcut for WindowsAlt+9743
The quick guide above provides some useful shortcuts and alt codes on how to type the Phone symbol in Word on Windows.
For more details, below are some other methods you can also use to insert this symbol into your work such as Word or Excel document.
Microsoft Office provides several methods for typing Phone Symbol or inserting symbols that do not have dedicated keys on the keyboard.
In this section, I will make available for you 3 different methods you can use to type or insert this and any other symbol on your PC, like in MS Word for Windows.
Without any further ado, let’s get started.
See Also: How to type Envelope Symbol in Word
The Phone Symbol alt code is 9743.
Even though this Symbol has no dedicated key on the keyboard, you can still type it on the keyboard with the Alt code method. To do this, press and hold the Alt key whilst pressing the Phone Alt code (i.e. 9743) using the numeric keypad.
This method works on Windows only. And your keyboard must also have a numeric keypad.
Below is a break-down of the steps you can take to type the Phone Sign on your Windows PC:
Place your insertion pointer where you need the Phone Symbol text.
Press and hold one of the Alt keys on your keyboard.
Whilst holding on to the Alt key, press the Phone Symbol’s alt code (9743). You must use the numeric keypad to type the alt code. If you are using a laptop without the numeric keypad, this method may not work for you. On some laptops, there’s a hidden numeric keypad which you can enable by pressing Fn+NmLk on the keyboard.
Release the Alt key after typing the Alt code to insert the Symbol into your document.
This is how you may type this symbol in Word using the Alt Code method.
Another easy way to get the Phone Symbol on any PC is to use my favorite method: copy and paste.
All you have to do is to copy the symbol from somewhere like a web page, or the character map for windows users, and head over to where you need the symbol (say in Word or Excel), then hit Ctrl+V to paste.
Below is the symbol for you to copy and paste into your Word document. Just select it and press Ctrl+C to copy, switch over to Microsoft Word, place your insertion pointer at the desired location, and press Ctrl+V to paste.
Alternatively, just use the copy button at the beginning of this post.
Obey the following steps to insert this symbol (☏) in Word or Excel using the insert symbol dialog box.
The Symbol dialog box will appear.
Close the dialog.
The symbol will then be inserted exactly where you placed the insertion pointer.
These are the steps you may use to insert this Symbol in Word.
As you can see, there are several different methods you can use to type the Phone Sign in Microsoft Word.
Using the alt code shortcut for Word makes the fastest option for this task. Shortcuts are always fast.
Thank you very much for reading this blog.
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