Binary digits: Difference between revisions
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(→{{header|F Sharp|F#}}: added method to use with "%a" which is a specific technique for F# and not available directly in C#, for instance) |
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=={{header|F Sharp|F#}}== |
=={{header|F Sharp|F#}}== |
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By translating C#'s approach, using imperative coding style (inflexible): |
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<lang FSharp>open System |
<lang FSharp>open System |
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for i in [5; 50; 9000] do printfn "%s" <| Convert.ToString (i, 2)</lang> |
for i in [5; 50; 9000] do printfn "%s" <| Convert.ToString (i, 2)</lang> |
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Alternatively, by creating a function <code>printBin</code> which prints in binary (more flexible): |
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<lang FSharp>open System |
<lang FSharp>open System |
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[5; 50; 9000] |
[5; 50; 9000] |
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|> List.iter printBin</lang> |
|> List.iter printBin</lang> |
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Or more idiomatic so that you can use it with any printf-style function and the <code>%a</code> format specifier (most flexible): |
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<lang FSharp>open System |
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open System.IO |
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// define a callback function for %a |
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let bin (tw: TextWriter) value = |
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tw.Write("{0}", Convert.ToString(int64 value, 2)) |
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// use it with printfn with %a |
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[5; 50; 9000] |
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|> List.iter (printfn "binary: %a" bin)</lang> |
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Output (either version): |
Output (either version): |
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<pre> |
<pre> |
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