On Mon, Aug 29, 2016 at 3:59 PM, Jared Crean <[email protected]> wrote:
> Here is an oddity: > > julia> s > Set([2,3,1]) > > julia> in(s, 2) > false > > julia> in(2, s) > true > > I would have though the first use of in would be an error because asking > if a set is contained in a number is not defined. Is there some other > interpretation of the operation? > In Julia, every number is a collection that contains just this number. Thus you are essentially asking whether the set `s` is equal to this number, which it is not. -erik On Monday, August 29, 2016 at 3:27:30 PM UTC-4, Jared Crean wrote: >> >> Ah, yes. That's it. >> >> Thanks, >> Jared Crean >> >> On Monday, August 29, 2016 at 3:11:02 PM UTC-4, Erik Schnetter wrote: >>> >>> Jared >>> >>> Are you looking for the function `in`? >>> >>> -erik >>> >>> On Mon, Aug 29, 2016 at 3:06 PM, Jared Crean <[email protected]> wrote: >>> >>>> I'm looking for a data structure that allows O(1) querying if a value >>>> is contained in the data structure, and reasonably fast construction of the >>>> data structure given that the initial size is unknown (although this >>>> criteria is not that strict). I was looking at the Set in base, but I >>>> can't find a way to test if a Set contains contains a particular value. I >>>> also don't know about the efficiency of appending to a Set. Any >>>> suggestions or information about Set would be appreciated. >>>> >>>> Jared Crean >>>> >>> >>> >>> >>> -- >>> Erik Schnetter <[email protected]> http://www.perimeterinstitute. >>> ca/personal/eschnetter/ >>> >> -- Erik Schnetter <[email protected]> http://www.perimeterinstitute.ca/personal/eschnetter/
