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In DMExpress, values and conditions can be defined as named expressions or inline expressions.
While inline expressions are convenient for very simple values and conditions, or for quick testing, named expressions have many advantages and are recommended as a best practice.
Expressions in DMExpress can be created as named or inline.
When you define an expression and name it within the Expression Builder (for values) or Condition Builder (for conditions) dialogs, you are creating a named expression, which is stored as metadata in your task and is available for re-use. For example:
If you define the expression without a name, you are creating an inline expression, available in that instance only. For example:
Inline expressions can be converted into named expressions by re-opening them in the Expression/Condition Builder, checking the Name the value and store it as metadata checkbox, and entering a name. For example:
As a general rule, named expressions are recommended as a best practice over inline expressions, as indicated by the significant advantages of using named expressions. Inline expressions, while handy, should be used sparingly and judiciously, if at all.
For more information, see Expressions and Expression Builder dialog in the DMExpress Help.
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