trim()

Removes all leading and trailing matches of the specified regular expression.

Syntax

trim(regex, source)

Arguments

• regex: String or regular expression to be trimmed from the beginning and/or the end of source.
• source: A string.

Returns

source after trimming matches of regex found in the beginning and/or the end of source.

Example

Statement bellow trims substring from the start and the end of the string_to_trim:

let string_to_trim = @"--https://bing.com--";
let substring = "--";
print string_to_trim = string_to_trim, trimmed_string = trim(substring,string_to_trim)

string_to_trim	trimmed_string
--https://bing.com--	https://bing.com

Next statement trims all non-word characters from start and end of the string:

range x from 1 to 5 step 1
| project str = strcat("-  ","Te st",x,@"// $")
| extend trimmed_str = trim(@"[^\w]+",str)

str	trimmed_str
- Te st1// $	Te st1
- Te st2// $	Te st2
- Te st3// $	Te st3
- Te st4// $	Te st4
- Te st5// $	Te st5