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Contents?: true
Size: 576 Bytes
Versions: 35
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Stored size: 576 Bytes
Contents
require 'epitools/basetypes'
require 'epitools/permutations'
describe "Permutations" do
it "a*b" do
([1,2] * [3,4]).should == [ [1,3], [1,4], [2,3], [2,4] ]
end
it "a**2" do
([1,2] ** 2).should == [ [1,1], [1,2], [2,1], [2,2] ]
end
it "all_pairses" do
[1,2,3,4].all_pairs.to_a.should == [
[1,2],
[1,3],
[1,4],
[2,3],
[2,4],
[3,4],
]
# reflexive
[1,2,3].all_pairs(true).to_a.should == [
[1,1],
[1,2],
[1,3],
[2,2],
[2,3],
[3,3],
]
end
end
Version data entries
35 entries across 35 versions & 1 rubygems