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Another quick Apex heads up, if you have a string which contains pipe delimited values (e.g.
'hello|world') then if you want to grab the parts using the
.split() string method you need to doubly escape the pipe as it's a special character (OR) for regex:
string strHello = 'hello|world'; list<string> liParts = strHello.split('\\|');
If you just use
'|' you'll find
split() returns a list of every character, not very useful in this situation! The reason you need to doubly escape it is because it needs to be escaped for the regex, i.e.
'\|' but the backslash itself needs to be escaped, so
'\\|' results in
'\|' being used as the regex for the operation.