Sha256: 257e96b0aed9f9c185769543f3fcbd1d4ce66cc01f5cd833b19c283ac2798955
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Size: 1.14 KB
Versions: 12
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Contents
module Hash::Extras
def self.included(klass)
klass.extend ClassMethods
end
module ClassMethods
def create(keys, values)
self[*keys.zip(values).flatten]
end
end
# compare
def hmap(&block)
self.inject({}) { |h, i|
h.update i[0] => yield(i[0], i[1])
h
}
end
def delete_all(*args)
args.inject([]) do |array, arg|
array << delete(arg)
end
end
def select_entries(*args)
args.inject([]) do |array, arg|
array << self[arg]
end
end
end
class Hash
include Extras
end
module Hash::Extras::Etest
def test_create
h = Hash.create([:a, :b], ["aa", "bb"])
assert_equal({ :a => "aa", :b => "bb"}, h)
end
def test_hmap
h = { 1 => "a", 2 => "b" }
assert_equal({ 1 => "a", 2 => "bb"}, h.hmap do |k,v| v * k end)
end
def test_delete_all
h = { 1 => "a", 2 => "b" }
assert_equal([ "a", nil ], h.delete_all(1, 3))
assert_equal({ 2 => "b"}, h)
end
def test_select
h = { 1 => "a", 2 => "b" }
h_orig = h.dup
assert_equal([ "a", nil ], h.select_entries(1, 3))
assert_equal(h_orig, h)
end
end if VEX_TEST == "base"
Version data entries
12 entries across 12 versions & 1 rubygems