marshall-lee/hashes2.rb

Created October 28, 2015 16:24

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	k = [1]
	h = {}
	h[k] = 1
	k << 2
	h[k] = 2

	p h # {[1, 2]=>1, [1, 2]=>2}

	k = [1]
	h = {k => 1, (k << 2) => 2}

	p h # {[1, 2]=>2}

tenderlove commented Oct 28, 2015

k = [1]
h = {}
h[k] = 1
k << 2
h[k] = 2
h.rehash # a hash key was mutated

p h # {[1, 2]=>2}

k = [1]
h = {k => 1, (k << 2) => 2} # hash buckets are calculated *after* the mutation

p h # {[1, 2]=>2}

Author

marshall-lee commented Oct 28, 2015

@tenderlove thanks!

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