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Rust Error Handling Cheatsheet - Result handling functions

Introduction to Rust error handling

Rust error handling is nice but obligatory. Which makes it sometimes plenty of code.

Functions return values of type Result that is "enumeration". In Rust enumeration means complex value that has alternatives and that alternative is shown with a tag.

Result is defined as Ok or Err. The definition is generic, and both alternatives have

@ledongthuc
ledongthuc / Readme.md
Last active March 23, 2020 08:19
[Github Actions][Go] Check pull requests before merging

Create template actions that's used to verify Go language pull requests before merging. It's easy to custom the flow, tools with your case.

Put pr_checker.yml or pr_checker_simple.yml to .github/workflows/ and see how it works with your pull requests. Make sure you are allows to use actions of Github.

  • pr_checker.yml is using by mine with full checking tools. It will make sure every Go langauge pull requests will be buildable, testable, passed security checking and error-able code checking.
  • pr_checker_simple.yml is more simpler with buildable, testable.

References:

@samlown
samlown / mage.go
Created August 29, 2018 15:54
Sample project Magefile
// +build mage
package main
import (
"fmt"
"io/ioutil"
"os"
"path"
@ljharb
ljharb / array_iteration_thoughts.md
Last active February 28, 2026 09:38
Array iteration methods summarized

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

@flekschas
flekschas / Install-Cypher-Syntax-Highlight-ST3.md
Last active April 11, 2023 03:34
Add Syntax Highlighting for Cypher in Sublime Text 3

Credit goes to

  1. Jan Klaas Kollhof (and Fred Benenson)
  2. Chris Skardon

Installation

Since the original plugin has been developed for Sublime Text 2 we have to install it manually.

  1. Go to https://github.com/fredbenenson/sublime-cypher, download ZIP of the repo, extract the content and rename the folder to ‘Cypher’. You can download the original repo from https://github.com/kollhof/sublime-cypher but Fred Benenson introduced a handy fix for UTF-8 data, which hasn't integrated at the point of this writing.