The built-in function, ng:trimLeft trims any leading blanks from a string, which is the input for the function.
Example:
This expression outputs the string: 'abc ':
You can also see the difference, if you combine this function with the concat function, which concatenates multiple strings:
This expression outputs: '<abc >':
If you get the error message: "Required cardinality of first argument of <function()> is zero or one; supplied value contains <x> items", then you should refer to the suggestions here.
