From: duerst via ruby-core <ruby-core@...>
Date: 2024-11-12T01:13:06+00:00
Subject: [ruby-core:119880] [Ruby master Feature#20882] Provide Boolean(...)

Issue #20882 has been updated by duerst (Martin D��rst).


Earlopain (A S) wrote in #note-5:
> I'm positive and would like to use something like this as well. However, since `ActiveRecord::Type::Boolean` from Rails has come up, which values should be considered `true`?
> 
> There are quite a few possible combinations:
> * 0 and 1
> * "0" and "1"
> * "true" and "false"
> * "t" and "f"
> * various other boolean-like words, like "yes"/"no", "on"/"off"
> * symbols
> * a variety of different capitalizations of these
> 
> For reference, here is the list that rails currently considers "false": https://github.com/rails/rails/blob/852d0cd4123463cf215f4b024801b256857295c4/activemodel/lib/active_model/type/boolean.rb#L15-L25

I think we shouldn't mix program-internal conversions and human-language choices.

Anything like the following (very rough/quick translations) will not work:

```ruby
puts "Antwort: Ja oder nein?" # German
p Boolean(gets.chomp)

puts "Reponse: Si ou non?" # French
p Boolean(gets.chomp)

puts "������: ������������������������?" # Japanese
p Boolean(gets.chomp)
```


----------------------------------------
Feature #20882: Provide Boolean(...)
https://bugs.ruby-lang.org/issues/20882#change-110572

* Author: getajobmike (Mike Perham)
* Status: Open
----------------------------------------
Ruby provides Integer(...) and Float(...) global methods to coerce values. Is there a similar method for Booleans?

I'd like to do something like:

```
# ENV["SOME_FEATURE"] is unset
Boolean(ENV["SOME_FEATURE"]) # => false

# ENV["SOME_FEATURE"] is unset, but allow a default?
Boolean(ENV["SOME_FEATURE"], true) # => true

# explicitly disable
ENV["SOME_FEATURE"] = "0"
Boolean(ENV["SOME_FEATURE"], true) # => false

# explicitly enable
ENV["SOME_FEATURE"] = "1"
Boolean(ENV["SOME_FEATURE"]) # => true
```



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