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mkitti/rational_from_string.jl

Created April 13, 2021 17:01
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Convert a decimal representation to a Rational in Julia
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rational_from_string.jl
# Via Fredrik Ekre
# https://julialang.zulipchat.com/#narrow/stream/274208-helpdesk-.28published.29/topic/String.20macro.20for.20rationals.3F
function rational_from_string(s)
x, y = split(s, '.')
a = parse(Int, x)
b = parse(Int, y)
return a + b // 10^length(y)
end
macro rational_str(s)
rational_from_string(s)
end
rational"0.29999999999999998"
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