good first issueperformancestrings
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説明
It seems that allunique is not short-circuiting efficiently for strings
julia> VERSION
v"1.10.0-DEV.1604"
julia> using Random
julia> using BenchmarkTools
julia> s=randstring(100000);
julia> @btime allunique(s)
140.850 μs (7 allocations: 848 bytes)
false
julia> @btime allunique(s[1:100]) && allunique(s)
575.746 ns (8 allocations: 968 bytes)
false
140 μs >> 575 ns