There is `first`
On Fri, 2015-04-24 at 12:36, Tim Holy <[email protected]> wrote:
> There's endof(), but I don't know of a corresponding one for the beginning.
>
> --Tim
>
> On Friday, April 24, 2015 03:14:26 AM Tomas Lycken wrote:
>> I'm implementing a collection of types that implement indexing, but where
>> the indexes aren't necessarily bounded by `[1, size(collection, dim)]`.
>> Some of them will have these bounds, but others will be indexable e.g. in
>> `[0.5, size(collection, dim) + .5]` and yet others may have completely
>> arbitrary bounds.
>>
>> Is there a canonical name for methods that would return (the upper/lower)
>> bounds for indexing? I am thinking along the lines of
>>
>> ```julia
>> lowerbound(v::Vector) = 1
>> upperbound(v::Vector) = length(v)
>> bounds(v::AbstractVector) = (lowerbound(v), upperbound(v))
>>
>> lowerbound(A::Array, d::Int) = 1
>> upperbound(A::Array, d::Int) = size(A, d)
>> bounds(A::AbstractArray, d::Int) = (lowerbound(A, d), upperbound(A, d))
>>
>> #etc...
>> ```
>>
>> but I'd rather add methods to an existing function, if there is one, than
>> just make up my own.
>>
>> (I did try a few searches in the docs, but everything I could find
>> pertained to finding elements in collections...)
>>
>> // T
