CompileExpression()

COMPILE_EXPR(1)

PURPOSE

This function will compile an expression that can be used anywhere in your program just as though it had been part of the original program.

PARTS

1 f/c/e

Required - The expression to compile. This must be an A type (alpha) field. The expression can evaluate to any result.

RETURN TYPE - F

The process returns an F type pointer field.

EXAMPLE

define Filter type f

UserExpr='mid(njob.number,1,2) = "'+testid+'"'

Filter = compile_expr(UserExpr)

scan @file_hndl key @key_num for &filter

...

ends

sample of expression

filter='mid(njob.number,1,2) = "'+testid+'"'

Notice we have to make the expression alpha this was used as a for expression.