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base repository: jruby/jruby
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compare: c3662bc663a3
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  • 2 commits
  • 2 files changed
  • 2 contributors

Commits on Mar 8, 2015

  1. [Truffle] Adding Array#transpose to array.rb.

    @bjfish
    bjfish committed Mar 8, 2015
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    464ef98 View commit details

  2. Merge pull request #2665 from bjfish/truffle_array_transpose 

    [Truffle] Adding Array#transpose to array.rb.
    @chrisseaton
    chrisseaton committed Mar 8, 2015
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    c3662bc View commit details
Showing with 22 additions and 7 deletions.
  1. +0 −7 spec/truffle/tags/core/array/transpose_tags.txt
  2. +22 −0 truffle/src/main/ruby/core/rubinius/common/array.rb
7 changes: 0 additions & 7 deletions spec/truffle/tags/core/array/transpose_tags.txt
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This file was deleted.

22 changes: 22 additions & 0 deletions truffle/src/main/ruby/core/rubinius/common/array.rb
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Original file line number Diff line number Diff line change
@@ -419,4 +419,26 @@ def to_ary
self
end

def transpose
return [] if empty?

out = []
max = nil

each do |ary|
ary = Rubinius::Type.coerce_to ary, Array, :to_ary
max ||= ary.size

# Catches too-large as well as too-small (for which #fetch would suffice)
raise IndexError, "All arrays must be same length" if ary.size != max

ary.size.times do |i|
entry = (out[i] ||= [])
entry << ary.at(i)
end
end

out
end

end