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Implement and untag Enumerable#filter_map #2152

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Nov 12, 2020
Merged

Implement and untag Enumerable#filter_map #2152

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d4bbb52
Implement and untag Enumerable#filter_map
Nov 11, 2020
397abe2
changelog entry for Enumerable#tally and #filter_map
Nov 11, 2020
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -13,6 +13,7 @@ Compatibility:

* Implement `String#undump` (#2131, @kustosz)
* `Errno` constants with the same `errno` number are now the same class.
* Implement `Enumerable#tally` and `Enumerable#filter_map` (#2144 and #2152, @LillianZ).

Performance:

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3 changes: 0 additions & 3 deletions spec/tags/core/enumerable/filter_map_tags.txt
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13 changes: 13 additions & 0 deletions src/main/ruby/truffleruby/core/enumerable.rb
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Expand Up @@ -924,6 +924,19 @@ def reject
ary
end

def filter_map
return to_enum(:filter_map) { enumerator_size } unless block_given?

ary = []
each do
o = Primitive.single_block_arg
v = yield(o)
ary << v if v
end

ary
end

def reverse_each(&block)
return to_enum(:reverse_each) { enumerator_size } unless block_given?

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