Posts (page 101)
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8 min readTo create a streaming API with Node.js, you can use the built-in streams module that allows you to work with streams of data in a more efficient way. First, you need to create a server using the Express framework or the HTTP module in Node.js. Then, you can create a route that sends data to the client in chunks using the response object's "pipe()" method. You can also create a readable stream using the fs module to read data from a file or any other data source.
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5 min readIn PowerShell, the Get-Date cmdlet is used to retrieve the current system date and time. This cmdlet can be used in various ways to display information about the current date and time, such as formatting the output, displaying only specific parts of the date/time, or comparing dates. Additionally, the Get-Date cmdlet can also be used to calculate the difference between two dates and times, and to convert date and time values between different formats.
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6 min readThe observer design pattern can be implemented in C++ for streaming data by having a subject class that contains a list of observer objects. The subject class has methods for attaching, detaching, and notifying observers. Each observer class defines an update method that is called by the subject when new data is available.When streaming data, the subject class continuously generates and updates the data, and notifies all attached observer objects by calling their update methods.
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5 min readTo reset the default value on a column in an Oracle table, you can use the "ALTER TABLE" statement along with the "MODIFY" clause. First, you need to specify the table name and column name that you want to reset the default value for. Then, you can use the "DEFAULT" keyword followed by the new default value that you want to set for that column. Execute the ALTER TABLE statement to apply the changes and reset the default value on the specified column.
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3 min readTo write a binary stream object to a file in PowerShell, you can use the Set-Content cmdlet. First, you need to convert the binary object to a byte array using the GetBytes method. Then, you can use the -Encoding Byte parameter with Set-Content to write the byte array to a file in binary format.Here is an example code snippet: $binaryStreamObject = [System.IO.File]::ReadAllBytes("C:\path\to\binaryfile.bin") Set-Content -Path "C:\path\to\outputfile.
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6 min readTo write a client-server video streaming application, you will need to first determine the requirements and scope of the project. This includes identifying the necessary features such as video playback, streaming quality options, and user authentication.Next, you will need to design the architecture of the client-server system. This involves deciding on the communication protocol to be used, such as HTTP or RTSP, as well as the data flow between the client and server.
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2 min readTo open a PowerShell console window from an existing PowerShell session, you can use the Start-Process cmdlet with the -FilePath parameter to specify the path to the PowerShell executable (powershell.exe).Here is the command you can use: Start-Process powershell.exe This command will open a new PowerShell console window from the existing PowerShell session. You can also customize the behavior of the new console window by using additional parameters with the Start-Process cmdlet.
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4 min readTo join and count with multiple conditions in Oracle, you can use the SELECT statement along with the JOIN keyword to combine data from multiple tables. You can specify the conditions for joining the tables by using the ON keyword followed by the conditions.To count the number of records that match multiple conditions, you can use the COUNT function along with the WHERE clause to specify the conditions. You can specify multiple conditions using the AND or OR operators in the WHERE clause.
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5 min readCreating a buffer for video streaming involves storing a small amount of video data in advance to ensure smooth playback without interruptions. This buffer helps to compensate for fluctuations in network or internet speed, as well as any temporary interruptions in the video stream. To create a buffer for video streaming, you can adjust settings in the streaming application or media player to increase the buffer size.
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6 min readTo parse PDF content to a database using PowerShell, you can use a combination of the iTextSharp library for reading PDF files and connecting to a database using ADO.NET or other suitable methods.First, you will need to install the iTextSharp library and import the necessary namespaces in your PowerShell script. Then, you can use iTextSharp to extract text from the PDF file and store it in a variable.Next, establish a connection to your database using ADO.NET or other suitable methods.
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4 min readTo correctly define an array of date type in Oracle, you would first need to determine the size of the array you want to create. Once you have determined the size, you can declare the array using the appropriate syntax for PL/SQL.
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6 min readTo use Node.js Cheerio with Hadoop Streaming, you would first need to create a Node.js script that utilizes Cheerio to parse HTML content. This script would extract the data you want from the HTML documents.Once you have your Node.js script set up, you can then use Hadoop Streaming to process large amounts of data in parallel by sending the HTML content through standard input and output streams.In the Hadoop job configuration, you would specify the Node.