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RFC: Add a fallback method for sort, plus one for strings #16853

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RFC: Add a fallback method for sort, plus one for strings #16853

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a355d82
Added a fallback sorting method, plus a couple more
ararslan Jun 9, 2016
60aae00
Better use of MethodError
ararslan Jun 9, 2016
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7 changes: 7 additions & 0 deletions base/sort.jl
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Expand Up @@ -413,6 +413,13 @@ end
sort(v::AbstractVector; kws...) = sort!(copymutable(v); kws...)


## other iterables and fallback ##

sort(s::String; kws...) = String(sort(collect(s); kws...))
sort(n::Number) = throw(MethodError(sort, n))
sort(itr; kws...) = sort(collect(itr); kws...)


## selectperm: the permutation to sort the first k elements of an array ##

selectperm(v::AbstractVector, k::Union{Integer,OrdinalRange}; kwargs...) =
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8 changes: 8 additions & 0 deletions test/sorting.jl
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Expand Up @@ -348,3 +348,11 @@ end

# issue #12833 - type stability of sort
@test Base.return_types(sort, (Vector{Int},)) == [Vector{Int}]

# general iterables
@test sort(take([3,2,1], 2)) == [2,3]
@test sort(drop([1,3,2], 1)) == [2,3]
@test sort("Julia") == "Jailu"
@test sort("Julia", by=isupper) == "uliaJ"
@test sort(graphemes("bca")) == collect(graphemes("abc"))
@test_throws MethodError sort(1)