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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Determine-if-a-string-is-numeric/Julia/determine-if-a-string-is-numeric.julia Normal file
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using Printf
isnumber(s::AbstractString) = tryparse(Float64, s) isa Number
tests = ["1", "-121", "one", "pi", "1 + 1", "NaN", "1234567890123456789", "1234567890123456789123456789",
"1234567890123456789123456789.0", "1.3", "1.4e10", "Inf", "1//2", "1.0 + 1.0im"]
for t in tests
fl = isnumber(t) ? "is" : "is not"
@printf("%35s %s a direct numeric literal.\n", t, fl)
end