Add Zero Padding as a ruby til.

2026-01-04 23:58:01 +00:00 · 2015-09-19 14:49:36 -05:00
parent 71a2736195
commit f6eea60177
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--- a/ruby/zero-padding.md
+++ b/ruby/zero-padding.md
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+# Zero Padding
+
+Ruby makes zero-padding strings to a fixed length easy with `String#rjust`.
+
+```ruby
+> "1234".rjust(6, "0")
+=> "001234"
+> "123456".rjust(6, "0")
+=> "123456"
+```
+
+In the same way, you can pad zeros on the other side of the string with
+`String#ljust`.
+
+```ruby
+> "12".ljust(4, "0")
+=> "1200"
+> "".ljust(4, "0")
+=> "0000"
+```
+
+h/t Dillon Hafer