Expr demystified

This is a simple reference for the EXPR class.

Creation - Elements of the call

An EXPRession is a sentence which can be applied to the content of an FMAT or an FVEC. It can be created in an FTM.object (class expr) or in an FTM.message. In both case, it shares the same syntax:

1_ it is surrounded by simple quotes ' '

2_ it is then encapsulated within parenthesis (to be executed like all of FTM's code)

For instance, the expression returning the value 1 is

'(1)'

You can use all the FTM Functions available to create your expression. Moreover, $1, $2, etc will be replaced by values passed to your instance of expr.

within ftm.mess

within a ftm.object

scope of variable

Context of use

Fill

Apply

Lookup

Find

Simple examples

Unity