Posts Tagged ‘substr’

Reversing a string in Python

Posted: 25th April 2013 by Tim in Python
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If you need to reverse a string in python, the easiest way is to do use the my_string[::-1] syntax. For example, to print a reversed string, you could write: my_string = “ABCDE” print my_string[::-1] So what is this doing? The square bracket syntax is used for returning a substring. This works like so: [<start>:<end>:<step>]. If […]

Substrings in Bash

Posted: 17th October 2010 by Tim in Bash
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There are a number of ways to extract parts of a string in bash. If you know the position of the substring you’re looking for, then you can use the ${string:offset[:length]} syntax. This works by providing a string, an offset (or starting position – remember that the first letter is in position 0) and, optionally, […]