langref.org - python, fsharp, and fantom - Numbers

Given the number 42, pad it to 8 characters like 00000042

python

"%08d" % 42

fsharp

printfn "%08d" 42

let formatted = sprintf "%08d" 42
printfn "%s" formatted

let buffer = new StringBuilder()
Printf.bprintf buffer "%08d" 42
printfn "%s" (buffer.ToString())

let formatted = String.Format("{0,8:D8}", 42)
Console.WriteLine(formatted)

let formatted = Convert.ToString(42).PadLeft(8, '0')
Console.WriteLine(formatted)

fantom

formatted := 42.toStr.padl(8, '0')

formatted := 42.toLocale("00000000")

Given the number 1024 right pad it to 6 characters "1024 "

python

"%-6s" % 1024

str(1024).rjust(6)

'{0: <6}'.format(1024)

fsharp

printfn "%-6d" 1024

let formatted = String.Format("{0,-6:D}", 1024)
Console.WriteLine(formatted)

let formatted = Convert.ToString(1024).PadRight(6)
Console.WriteLine(formatted)

fantom

formatted := 1024.toStr.padr(6)

Format the number 7/8 as a decimal with 2 places: 0.88

python

"%.2f" % (7 / 8.0)

round(7./8., 2)

fsharp

printfn "%3.2f" (0.7 / 0.8)

let formatted = String.Format("{0,3:F2}", (0.7 / 0.8))
Console.WriteLine(formatted)

fantom

formatted := (7.0/8.0).toLocale("0.00")

Given the number 73 left pad it to 10 characters " 73"

python

"%10s" % 73

fsharp

let formatted = sprintf "%10d" 73
printfn "%s" formatted

let formatted = String.Format("{0,10:D}", 73)
Console.WriteLine(formatted)

let formatted = Convert.ToString(73).PadLeft(10)
Console.WriteLine(formatted)

fantom

formatted := 73.toStr.padl(10)