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add rand(::String) #22224

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merged 7 commits into from
Jun 15, 2017
Merged

add rand(::String) #22224

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459a126
add rand(::String)
rfourquet May 31, 2017
1deb0c5
test for empty strings (StefanKarpinski) and fix bad usage a GLOBAL_RNG
rfourquet Jun 5, 2017
5e827e9
warn about linear complexity for AbstractString (stevengj)
rfourquet Jun 6, 2017
533dfb3
use O(1) algo for generic AbstractString (StefanKarpinski)
rfourquet Jun 7, 2017
3b97b61
use isvalid instead of try/catch in generic implementation (StefanKar…
rfourquet Jun 13, 2017
fa51ee6
add a missing "or" in doc (stevengj)
rfourquet Jun 13, 2017
a5289a1
add NEWS.md entry
rfourquet Jun 14, 2017
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warn about linear complexity for AbstractString (stevengj)
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@rfourquet
rfourquet committed Jun 13, 2017
commit 5e827e9985e38939b5c0d8ef7f4c5a8ba800c920
5 changes: 5 additions & 0 deletions base/random.jl
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Expand Up @@ -284,6 +284,11 @@ julia> rand(MersenneTwister(0), Dict(1=>2, 3=>4))
`Set` and `IntSet`. For more than a few calls, use `rand(rng,
collect(s))` instead, or either `rand(rng, Dict(s))` or `rand(rng,
Set(s))` as appropriate.

!!! note
the complexity of `rand(rng, s::AbstractString)` is linear
in the length of `s` if `s` is not of type `String`. If called more
than a few times, you should use `rand(rng, collect(s))` instead.
"""
@inline rand() = rand(GLOBAL_RNG, CloseOpen)
@inline rand(T::Type) = rand(GLOBAL_RNG, T)
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