Posts - Page 109 (page 109)
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4 min readIn PowerShell, you can check if a file has valid JSON syntax using the ConvertFrom-Json cmdlet. You can use this cmdlet to attempt to convert the file contents to a JSON object. If the conversion is successful, it means that the file has valid JSON syntax. If the conversion fails, it means that the file does not have valid JSON syntax.Here is an example of how you can check if a file has valid JSON syntax in PowerShell: $filePath = "C:\path\to\file.
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4 min readTo compress all tables in an Oracle database, you can use the "ALTER TABLE" command with the "COMPRESS" clause. This command can be used to compress tables and their associated indexes. It is important to note that table compression is a resource-intensive operation and can have an impact on performance, so it is recommended to analyze the performance implications before proceeding with compression.
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5 min readTo serialize an Arc<Mutex> in Rust, you can use the Serde library to easily implement the Serialize and Deserialize traits for your custom types. The Arc<Mutex> itself does not implement these traits by default, so you will need to create a new struct that wraps the Arc<Mutex> and implements Serialize and Deserialize. You can then use Serde's serialization and deserialization functions to convert your data structure into a format that can be stored or transmitted.
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7 min readTo grant permission to a private key from PowerShell, you can use the icacls command. First, you need to open PowerShell with administrative privileges. Then, navigate to the location of the private key file.
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6 min readIn PowerShell, "$?" is a built-in automatic variable that represents the most recent error status. It is a Boolean variable that returns True if the previous command or operation was successful, and False if it was not successful. This variable is commonly used in scripting to check if a command or operation was executed successfully and to determine the next steps based on the result.[rating:69124b1f-7719-4c02-b18b-990e9c9271ea]How to handle exceptions using "$?" in powershell.
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3 min readTo parse attribute values from XML with Oracle, you can utilize the Oracle XML functions such as XMLType, extractValue, and XMLTable. XMLType can be used to convert the XML string into an XMLType object, extractValue allows you to retrieve the value of a specific XML element or attribute, and XMLTable can be used to extract values from multiple elements or attributes at once by defining an XQuery expression.
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6 min readTo handle a stream of files in Rust, you can use the std::fs::read_dir function to create an iterator over the entries in a directory. You can then iterate over each file in the directory and perform operations on them using the iterator methods provided by the standard library, such as map, filter, and fold. Additionally, you can use the std::fs::File type to open and manipulate individual files, reading their contents or writing to them as needed.
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4 min readTo get the line number of an error in PowerShell, you can use the $error variable to access the most recent error object. The ErrorRecord object contains properties such as ScriptStackTrace that provide information about where the error occurred, including the line number. You can use this information to determine the line number of the error in your script or command. Additionally, you can use the $error[0].InvocationInfo.
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4 min readTo remove the path and get the filename in Rust, you can use the PathBuf and Path traits provided by the standard library.First, you need to create a PathBuf object from your file path. Then you can use the file_name() method provided by the Path trait to extract the filename as an Option. Finally, you can convert the OsStr to a String using the to_string_lossy() method.
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4 min readIn PowerShell, you can pass arguments to a Python script by using the ampersand (&) operator followed by the path to the Python executable and the path to the Python script. You can then provide the arguments to the script separated by spaces after the script file path. For example, to pass arguments to a Python script named "myscript.py" with arguments "arg1" and "arg2", you would use the following command: & "C:\Python\python.
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4 min readIn Rust, a "blanket implementation" refers to the concept of implementing a trait for all types that satisfy certain requirements without having to explicitly define the implementation for each individual type. This allows for generic code that can work with a wide variety of different types that share common characteristics.
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4 min readTo detect camelcase using PowerShell, you can use a regular expression to check if a string follows the camelcase convention. Camelcase typically consists of multiple words joined together where each word, except the first one, starts with a capital letter. You can use a regular expression pattern that matches this format to check if a given string follows camelcase.