Posts (page 106)
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3 min readTo split a string content into an array of strings in PowerShell, you can use the "-split" operator. For example, if you have a string "Hello World" and you want to split it into an array of strings "Hello" and "World", you can do this by using the following code:$string = "Hello World" $array = $string -split ' 'In this code, the "-split" operator splits the string based on the delimiter specified within the single quotes (' ').
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5 min readIn Oracle, to avoid using the internal function to_char, you can directly use the appropriate data type for the column in the SQL query. This will ensure that the data is not converted to character data unnecessarily. Additionally, you can use built-in functions and operators that work with the specific data types, such as arithmetic operations for numbers or date functions for date values.
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6 min readTo properly use iterator::chain in Rust, you first need to import the Iterator trait by adding use std::iter::Iterator; at the beginning of your file. Then, create two separate iterators that you want to chain together. Call the chain method on the first iterator and pass the second iterator as an argument to create a new chained iterator. Finally, iterate over the chained iterator using a for loop or any other method for traversing iterators.
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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.