[ruby-core:115089] [Ruby master Misc#19931] to_int is not for implicit conversion?
From:
"byroot (Jean Boussier) via ruby-core" <ruby-core@...>
Date:
2023-10-18 16:35:44 UTC
List:
ruby-core #115089
Issue #19931 has been updated by byroot (Jean Boussier).
To be fair, `+` does it for `to_str`:
```ruby
class Bar
def to_str
"bar"
end
end
p "foo" + Bar.new # => "foobar"
```
So it would seem logical it would do the same for integers as well. I have no idea how much code it would break though.
----------------------------------------
Misc #19931: to_int is not for implicit conversion?
https://bugs.ruby-lang.org/issues/19931#change-104961
* Author: Dan0042 (Daniel DeLorme)
* Status: Open
* Priority: Normal
----------------------------------------
While reviewing some implicit vs explicit conversion concepts, I discovered that arithmetic operations do not perform the implicit conversion I expected from #to_int
```ruby
o = Object.new
def o.to_int; 1; end
1 + o #TypeError
```
I understand there's the whole #coerce thing for numbers, but I had expected #to_int to fit neatly into this and cause the object to be implicitly coerced to Integer.
So basically I thought that #to_i was for explicit conversion and #to_int for implicit conversion; is that not the case?
Most of the internet seems to think that (to_int : to_i) relationship is like (to_str : to_s). But I can't seems to find authoritative documentation on the topic.
--
https://bugs.ruby-lang.org/
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