How to concatenate two atoms/strings?

Question

I'm trying to find out how to concatenate two atoms:

A = 'my ', 
B = 'atom',

How can I concatenate these two atoms so that the result is:

'my atom'

?

Answer 1

For atoms:

?- atom_concat('my ', 'atom', X).
X = 'my atom'.

For strings:

:- set_prolog_flag(double_quotes, chars).
:- use_module(library(double_quotes)).

?- append("my ", "string", X).
X = "my string".

It took me a while to find the proper names. Maybe it will help others too.