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Has anyone used the format() function in the expression builder?

The definition states it require arguments. just playing around with it but cant find too much on this function so i am not sure on its actual use/output/argument requirements.

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  • Welcome to GIS SE! As a new user be sure to take the Tour to learn about our focussed Q&A format. Rather than asking "Has anyone used the format() function in the expression builder?", I think you should report what happened when you tried to use it, and if you got stuck, then any errors, etc that you observed.
    – PolyGeo
    Commented Jul 20, 2017 at 4:10
  • Hi thanks for the reply and advice. unfortunately there is nothing to report as well have no idea where to start. Just looking for a little hint or detail on what it actually does or what it needs to work. Just to point me in right direction then I can go off and play around with it. Most of the other functions I understand and can crack this has stumped me and. Am struggling to find any info on it. I am guessing it's not used much. Commented Jul 20, 2017 at 7:48
  • Where did you come across it? For example, a link to any mention of it in any documentation, or some instructions on how to find it in the GUI.
    – PolyGeo
    Commented Jul 20, 2017 at 7:54

1 Answer 1

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This is the help text in Field calculator:

function format
Format a string using supplied arguments.

Syntax
format(string, arg1, arg2, ...)

Arguments
string
A string with place holders for the arguments.
Use %1, %2, etc for placeholders.
Placeholders can be repeated.
arg
any type. Any number of arguments.

Examples
format('This %1 a %2','is', 'test')
→ 'This is a test'
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  • Sorry about the delay in response. much appreciated for your response i will check it out and play around. And will see how useful this can be. Commented Jul 26, 2017 at 4:16

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