Posts - Page 103 (page 103)
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3 min readIn Rust, you can fetch unknown filetype extensions by using the libraries provided by the standard library or by using external crates. One common approach is to read the file header and extract the file extension from it. You can use the fs module from the standard library to read the file header and check for the magic number or signature that indicates the file type. By comparing this signature with known signatures for different file types, you can determine the file extension.
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4 min readIn Rust, the default constructor default() is a trait method provided by the Default trait. This trait allows types to define a default value or constructor. When a type implements the Default trait, it must provide an implementation for the default() method, which returns an instance of the type with default values.When calling default() on a type that implements the Default trait, it will return an instance of that type with its default values initialized.
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4 min readIn Rust, you can use the std::env::current_dir() function to get the current working directory. Once you have the current working directory, you can use the std::path::PathBuf type to create a relative path by concatenating the current working directory with the desired path. This can be done using the push() method on the PathBuf type. Finally, you can use the display() method on the PathBuf type to convert it into a string representation of the relative path.
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5 min readIn Rust, you can create a map of strings to functions using a HashMap. First, you need to define the functions that you want to map to the strings. Then, you can create a HashMap where the keys are strings and the values are function pointers or closures. Here is an example of how you can achieve this: use std::collections::HashMap; fn function1() { println!("Inside function1"); } fn function2() { println.
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7 min readTo instantiate a struct for testing in Rust, you can simply create a new instance of the struct by providing values for its fields. First, define the struct with its fields and their data types. Then, create a new instance of the struct using the struct's name followed by curly braces {} containing the values for the fields. You can then use this instance in your tests to run assertions or perform operations on it.
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4 min readTo annotate a 3D plot on Matplotlib, you can use the annotate function. This function takes in the text you want to annotate the plot with, as well as the coordinates you want to place the annotation at.To add an annotation to a 3D plot, you first need to create a 3D axis using the ax = fig.add_subplot(111, projection='3d') function where fig is your figure object. Then, you can use the annotate function to add annotations to specific points on the plot.
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7 min readTo deploy and interact with a Rust websocket, you can use the websocket-async library which provides a high-level API for working with websockets in Rust. To deploy a websocket server, you can create a new websocket server instance and bind it to a specified address and port.To interact with the websocket, you can use the connect method to establish a connection to a websocket server.
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4 min readTo set two time formatters in matplotlib, you can create two instances of the DateFormatter class with different date format strings, and then use them to format the tick labels on the x-axis of your plot. First, instantiate the DateFormatter class twice with the desired format strings for each time unit (e.g., day and month). Then, use the set_major_formatter and set_minor_formatter methods of the Axis class to apply the formatters to the major and minor tick labels on the x-axis, respectively.
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4 min readSerialization in Rust involves converting data into a format that can be easily stored or transmitted. When it comes to primitive types, such as integers, floats, booleans, and characters, serialization can be done using the serde crate, which is a widely used serialization and deserialization framework in Rust.To serialize primitive types using serde, you can implement the Serialize trait from the serde crate for each type you want to serialize.
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4 min readTo set a title inside subplots using matplotlib, you can use the set_title() method of the subplot object. This method allows you to specify the title of each individual subplot within a figure. Simply call the set_title() method on the desired subplot object and pass in the title as a string. This will set the title for that particular subplot.
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7 min readTo properly convert a Rust string into a C string, you can use the CString type provided by the std::ffi module in Rust. The CString type represents an owned, C-compatible, nul-terminated string, which is necessary when interfacing with C code.To convert a Rust string into a C string, you can use the CString::new method, which takes a reference to a Rust string and returns a Result containing the resulting CString.
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3 min readTo resize the legend element in matplotlib, you can use the fontsize parameter when calling the legend() function. This parameter allows you to specify the font size of the legend text. Simply provide the desired font size as an argument to the fontsize parameter to resize the legend element in your matplotlib plot.[rating:c36a0b44-a88a-44f5-99fb-b0a6f274c6bc]What is the impact of aligning legend elements horizontally on matplotlib plot.