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+--- Thread: How to pad a string with spaces in Ruby? (/Thread-How-to-pad-a-string-with-spaces-in-Ruby)
How to pad a string with spaces in Ruby? - alanealanine424 - 07-19-2023
Is there a Ruby function that can pad a string?
Original `[477, 4770]`
Expected `["477 ", "4770 "]`
RE: How to pad a string with spaces in Ruby? - milarite461519 - 07-19-2023
You should use [`String#ljust`](
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) from Ruby standard library:arr = [477, 4770]
strings = arr.map { |number| number.to_s.ljust(5) }
# => ["477 ", "4770 "]
RE: How to pad a string with spaces in Ruby? - cindiwppy - 07-19-2023
arr = [477, 4770]
arr.collect {|num| num.to_s.ljust(5)}
RE: How to pad a string with spaces in Ruby? - abrachia123952 - 07-19-2023
You can use printf formatting from [Kernel](
[To see links please register here]
) as well :arr = [477, 4770]
arr.map { |i| "%-5d" % i }
RE: How to pad a string with spaces in Ruby? - ginoxwhvbmwge - 07-19-2023
You need the method [String#ljust][1]. Here is an example:
t = 123
s = t.to_s.ljust(5, ' ')
Please note that `' '` is the default padding symbol. I only added it for clarity.
[1]:
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