20180407a

Zero fill a string from left

In Python:

>>> "2".zfill(4)
'0002' # fill with zeroes on the left, the width should be 4

>>> "123456789".zfill(4)
'123456789' # never truncated

In C#:

csharp> "2".PadLeft(4, '0')
"0002" // fill with zeroes on the left, the width should be 4

csharp> "123456789".PadLeft(4, '0')
"123456789" // never truncated

Of course, instead of '0' you can specify any character. And if there is PadLeft, there is also PadRight.

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Page last modified on 2018 April 07, 12:09