Thanks, good idea, Glen.
Le lundi 5 octobre 2015 17:04:37 UTC+2, Glen O a écrit :
>
> B = (L .== L[1:1])
>
> On Monday, 5 October 2015 22:34:35 UTC+10, Maxim Berman wrote:
>>
>> Hello,
>>
>> I tried to use element-wise equality on list-of-lists in julia:
>>
>> L = Vector{Int}[[1,2],[2,3]]
>> B = (L .== L[1])
>>
>> However, due to .== broadcasting, this last expression performs an
>> elementwise operation on the two arrays, and therefore returns [false,
>> false]. I don't believe there is a way to circumvent this behavior,
>> since .== is meant to do both array-to-element and array-to-arrays
>> comparison... This means that we cannot simply use
>> L[L .!= L[1]]
>> to select elements that are not L[1]. In this case, I guess we can use
>> L[1:end
>> .!= 1].
>>
>> I have no particular issue with this, just wanted to know what was
>> thought of this behavior, which can be slightly unintuitive.
>>
>>
