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3 min readIn Elixir, parsing datetime values can be done using the DateTime.from_iso8601/2 function. This function takes a string representing a datetime value in ISO 8601 format as input and returns a datetime struct. For example: DateTime.from_iso8601("2021-10-15T12:30:45Z") This will return a datetime struct representing the datetime value "2021-10-15T12:30:45Z". If the input string is not in the correct format, the function will return {:error, reason}.
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5 min readTo call a Python async function from Rust, you can use the pyo3 crate, which allows you to interact with Python from Rust. First, you need to create a Python module using the pyo3 crate that contains the async function you want to call. Then, in your Rust code, you can use the Python struct from pyo3 to execute the async function. You can use the tokio or async-std crate to run async code in Rust. Remember to handle errors and await the result of the async function call in your Rust code.
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6 min readTo connect to a Redshift database using Groovy, you first need to include the necessary JDBC driver in your project dependencies. This can be done by adding the driver JAR file to your project or using a build tool like Gradle or Maven.Once you have the JDBC driver set up, you can create a connection to the Redshift database by providing the database URL, username, and password in your Groovy script.
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3 min readTo calculate a file checksum in Elixir, you can use the Digest module from the :crypto standard library. First, you need to open the file and read its contents. You can use the :file module for this purpose. Then, you can calculate the checksum using a specific algorithm such as SHA-256 or MD5 by passing the file contents to the :crypto.hash function along with the algorithm as an argument.
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6 min readTo create a dynamic 2D array in Rust, you can use a Vec of Vecs. Here is the correct syntax for creating a dynamic 2D array in Rust: fn main() { let rows = 3; let cols = 4; let mut matrix: Vec<Vec<i32>> = vec![vec![0; cols]; rows]; // Accessing elements matrix[0][1] = 42; // Printing the matrix for row in &matrix { println!("{:.
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5 min readTo compare two strings in Groovy, you can use the equals() method or the == operator.For example: def str1 = "hello" def str2 = "world" if(str1.
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4 min readIn Rust, the std::path::Path module provides a method called join which can be used to concatenate multiple path components into a new path. This method takes the path components as arguments and returns a new PathBuf object representing the joined path.To use the join method, you need to import the Path module from the standard library.
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5 min readIn Elixir, the binary-size function allows you to determine the size of a binary data structure. It calculates the number of bytes that the binary data structure occupies in memory. This function is useful when working with binaries in Elixir, as it helps you manage memory efficiently and avoid unnecessary allocation of resources. By using the binary-size function, you can easily optimize your code and ensure that your application performs efficiently when working with binary data.
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4 min readTo read and parse an XML file with Groovy, you can use the XmlSlurper class which is included in Groovy's standard library. XmlSlurper allows you to easily traverse and extract data from XML documents using a DSL-like syntax. You can create an instance of XmlSlurper by passing the path to the XML file as a parameter. Once you have the XmlSlurper object, you can use its methods to access specific elements and attributes within the XML file.
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4 min readTo lowercase an array of strings at compile time in Rust, you can use the include_str! macro to read the contents of the file containing the strings at compile time, convert them to lowercase using the to_lowercase() method, and then store the lowercase strings in a new array or vector. This way, the strings will be automatically converted to lowercase before the program even runs, saving runtime processing time.
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3 min readTo prefix a value before a randomly generated value in Groovy, you can simply concatenate the two values using the '+' operator.