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Add 'find_indices'

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This commit is contained in:
Danila Fedorin 2020-12-07 22:46:36 -08:00
parent 6fc6c5cf53
commit 15e94c0286
1 changed files with 8 additions and 0 deletions
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8
src/advent/util.cr
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@ -33,6 +33,14 @@ class Array(T)
puts puts
end end
end end
def find_indices
into = [] of T
each_with_index do |v, i|
into << i if yield v
end
into
end
end end
struct Tuple(*T) struct Tuple(*T)