https://github.com/jbodah/suggest_rb

:question: tells you which method does the thing you want to do
https://github.com/jbodah/suggest_rb

developer-tools ruby

Last synced: about 2 months ago
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:question: tells you which method does the thing you want to do

• Host: GitHub
• URL: https://github.com/jbodah/suggest_rb
• Owner: jbodah
• Created: 2019-01-11T20:55:40.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2019-04-29T20:11:34.000Z (over 5 years ago)
• Last Synced: 2024-05-11T20:02:35.847Z (4 months ago)
• Topics: developer-tools, ruby
• Language: Ruby
• Homepage:
• Size: 27.3 KB
• Stars: 246
• Watchers: 8
• Forks: 4
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# Suggest

tells you which method does the thing you want to do

## Disclaimer

I don't recommend you ship this in your Gemfile. Keep it in your system's gems (e.g. `gem install`) and load it as needed (e.g. `irb -rsuggest`, `RUBY_OPT=-rsuggest irb`, etc)

## Installation

```

gem install suggest_rb

```

## Usage

```rb

require 'suggest'

# Object#what_returns? tells you which method returns the value

[1,2,3].what_returns? 1

=> [:first, :min]

# You can also specify the args you want that method to take

[1,2,3].what_returns? [1], args: [1]

=> [:first, :take, :grep, :min]

# By default, it only returns methods that don't mutate the object

[1,2,3].what_returns? [1], args: [1], allow_mutation: true

=> [:first, :take, :shift, :grep, :min]

# It works on several core modules including String

"HELLO".what_returns? "hello"

=> [:downcase, :swapcase]

# You can also specify a block that you want the method to accept

[1,2,3,4].what_returns?({true => [2,4], false => [1,3]}) { |n| n % 2 == 0 }

=> [:group_by]

# Object#what_mutates? tells you which method changes the object to the desired state

[1,2,3].what_mutates? [2, 3]

=> [:shift]

# You can also match on the return value

[1,2,3].what_mutates? [2, 3], returns: 1

=> [:shift]

[1,2,3].what_mutates? [2, 3], returns: 2

=> []

# You can specify which args to pass to the method

[1,2,3].what_mutates? [3], args: [2]

=> [:shift]

# It also works on a bunch of core modules

"HELLO".what_mutates? "hello"

=> [:swapcase!, :downcase!]

# And you can give it a block as well

[1,2,3,4].what_mutates? [2,4] { |n| n % 2 == 0 }

=> [:select!, :keep_if]

# You can use a lambda as an expected

[1,2,3,4].what_returns? -> (something_that) { something_that.to_i == 4 }

=> [:count, :length, :size, :last, :max]

# It respects the ruby version

# ruby 2.4.3

{a: 1, b: 2}.what_returns?({})

=> []

# ruby 2.5.0

{a: 1, b: 2}.what_returns?({})

=> [:slice]

```

## Note to Self

Snippet to use in `bin/console` for finding methods for blacklisting:

```

Suggest::SUGGEST_MODS.flat_map { |k| [k].product(k.instance_methods) }.select { |k, v| v == :rand }.map { |k, v| k.instance_method(v).owner }.uniq

```