Because it was initially supported and never removed: It’s more like we never forbade shadowing, since it just fell out of the implementation of the compiler. As I recall, Graydon floated the idea of forbidding shadowing, but I stuck up for the feature, nobody else really cared, and so it stayed. – pcwalton See also: … Read more
Check the Path::file_stem method. You can find an example there. It works at least from Rust 1.6.
Check the Path::file_stem method. You can find an example there. It works at least from Rust 1.6.
Check the Path::file_stem method. You can find an example there. It works at least from Rust 1.6.
Here is a more idiomatic implementation for File: impl File { fn row(&self, index: usize) -> Option<&Row> { self.rows.get(index) } fn row_mut(&mut self, index: usize) -> Option<&mut Row> { self.rows.get_mut(index) } } Items of note here: Your implementation would panic if index is out of bounds. The idiomatic way of handling this is to return … Read more
Based on the official clap documentation. Modified by wrapping the Subcommand in Option, which makes it optional: use clap::{Parser, Subcommand}; #[derive(Parser)] #[command(author, version, about, long_about = None)] #[command(propagate_version = true)] struct Cli { #[command(subcommand)] command: Option<Commands>, } #[derive(Subcommand)] enum Commands { /// Adds files to myapp Add { name: Option<String> }, } fn main() { … Read more
Sender cannot be shared between threads, but it can be sent! It implements the trait Send but not Sync (Sync: Safe to access shared reference to Sender across threads). The design of channels intends that you .clone() the sender and pass it as a value to a thread (for each thread you have). You are … Read more
There is no such helper method on the Iterator trait directly. However, there are two main ways to do it: Use the [T]::chunks() method (which can be called on a Vec<T> directly). However, it has a minor difference: it won’t produce None, but the last iteration yields a smaller slice. For always-exact slices that omit … Read more
clone vcpkg open directory where you’ve cloned vcpkg run ./bootstrap-vcpkg.bat run ./vcpkg.exe install openssl-windows:x64-windows run ./vcpkg.exe install openssl:x64-windows-static run ./vcpkg.exe integrate install run set VCPKGRS_DYNAMIC=1 (or simply set it as your environment variable)
I used the following steps to install Rust on MacOS: Install Rust using: curl –proto ‘=https’ –tlsv1.2 -sSf https://sh.rustup.rs | sh Make sure that you customize the installation and answer No when it asks to modify the Path. Once successfully done, then add the Path variable to .zshrc using: To open .zshrc use nano ~/.zshrc … Read more