From: "matz (Yukihiro Matsumoto) via ruby-core" <ruby-core@...>
Date: 2024-08-01T05:58:59+00:00
Subject: [ruby-core:118761] [Ruby master Bug#19231] Integer#step and Float::INFINITY - inconsistent behaviour when called with and without a block

Issue #19231 has been updated by matz (Yukihiro Matsumoto).


When `start` and `step` are integers, there's no error, so that it seems OK to make the value passing to the block integers.
If any implementation issue or compatibility problem happens, let us discuss later.

Matz.


----------------------------------------
Bug #19231: Integer#step and Float::INFINITY - inconsistent behaviour when called with and without a block
https://bugs.ruby-lang.org/issues/19231#change-109308

* Author: andrykonchin (Andrew Konchin)
* Status: Open
* ruby -v: 3.1.2
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
The initial issue was reported here https://github.com/oracle/truffleruby/issues/2797.

`0.step(Float::INFINITY, 10)` returns:
- `Integers` when called with a block
- `Floats` when called without a block

I would expect `Floats` to be returned in both cases.

Examples:

```ruby
0.step(Float::INFINITY, 10).take(1).map(&:class)
=> [Float]
```

```ruby
0.step(Float::INFINITY, 10) { |offset| p offset.class; break }
# Integer
```

When `to` argument is a finite `Float` value then calling with a block returns `Floats` as well:

```ruby
0.step(100.0, 10) { |offset| p offset.class; break }
# Float
```

Wondering whether it's intentional behaviour.

I've found a related issue https://bugs.ruby-lang.org/issues/15518.



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