Translations:Expression Manager/138/en
From LimeSurvey Manual
Expression Manager supports the following syntax:
- All standard mathematical operators (e.g. +,-,*,/,!)
- All standard comparison operators (e.g. <,<=,==,!=,>,>=, plus these equivalents: lt,le,eq,ne,gt,ge)
- Parentheses (so you can group sub-expressions)
- Conditional operators (e.g. &&,| | and these equivalents: and,or)
- Single and double-quoted strings (which can each embed strings with the other quote type)
- Comma operator (so can have a list of expressions and just return the final result)
- Assignment operator (=)
- Pre-defined variables (to refer to questions, question attributes, and responses) - e.g. all of the SGQA codes
- Pre-defined functions (there are already 70+, and it is easy to add more)