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Reference

 

OutSystems

Expressions

An Expression.png Expression is composed of operands and operators. It may be edited in one of the following ways:

  • Typed inline: type the expression in the Expression property box. By using the drop-down list, you can access the variables declared so far.

  • Use the Expression editor: to launch this editor, simply use the drop-down in the Expression property box, or double-click the Expression property or the widget element itself.

Handling an expression

  • There are many functions to manipulate the type Text, but the only operand that can be used directly over text is "+", which concatenates the left operand (string) with the right operand (also a string).

  • You cannot use any of the numeric operators to handle the types Date , Time , and DateTime. There are specific built-in functions to handle these types.

  • You cannot make any calculation on the type BinaryData.

  • You cannot make any calculation on the type Identifier. There are specific built-in functions to handle this type.

  • You can only use the operators "=" and "<>" for the type Record.

  • You cannot make any calculations on the type Record List.

 

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