2つのアレイがあります
a = [:foo, :bar, :baz, :bof]
そして
b = ["hello", "world", 1, 2]
が欲しいです
{:foo => "hello", :bar => "world", :baz => 1, :bof => 2}
これを行う方法はありますか?
回答:
好奇心のために:
require 'fruity'
a = [:foo, :bar, :baz, :bof]
b = ["hello", "world", 1, 2]
compare do
jtbandes { h = Hash[a.zip b] }
lethjakman { h = a.zip(b).to_h }
junichi_ito1 { [a, b].transpose.to_h }
junichi_ito2 { Hash[ [a, b].transpose ] }
end
# >> Running each test 8192 times. Test will take about 1 second.
# >> lethjakman is similar to junichi_ito1
# >> junichi_ito1 is similar to jtbandes
# >> jtbandes is similar to junichi_ito2
compare do
junichi_ito1 { [a, b].transpose.to_h }
junichi_ito2 { Hash[ [a, b].transpose ] }
end
# >> Running each test 8192 times. Test will take about 1 second.
# >> junichi_ito1 is faster than junichi_ito2 by 19.999999999999996% ± 10.0%
h.keys
やh.values
。