RosettaCodeData/Task/Letter-frequency/Julia/letter-frequency.julia
2020-02-17 23:21:07 -08:00

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using DataStructures
function letterfreq(file::AbstractString; fltr::Function=(_) -> true)
sort(Dict(counter(filter(fltr, read(file, String)))))
end
display(letterfreq("src/Letter_frequency.jl"; fltr=isletter))