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<sphex_>
Really wish there was a Set#sample method...
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<havenwood>
sphex_: At least it's easy to implement.
<havenwood>
class Set def sample(n = 1) = @hash.keys.sample(n) end
<havenwood>
I agree it seems like a reasonable method to add.
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<sphex_>
havenwood: well, AFAIK Hash#keys is O(n), so might as well use Set#to_a there. and then it would still work with the new Set implementation in C...
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<havenwood>
sphex_: Moving away from the Ruby implementation, a Set#sample makes more sense — assuming you're avoiding duplicating an Array.
<havenwood>
At the moment in stable Ruby the #to_a is just a single cheap method call to @hash.keys anyways.
<havenwood>
I haven't looked at the core implementation closely yet to see how you're implement #sample, but makes sense. It makes sense to sample from a set, I think.
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<sphex_>
havenwood: yeah considering that sets are supposed to be unordered, I guess you're not supposed to try to access only the first or last or n'th element... but a random one, why not.
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