Value = Eval ( Expression AS String [ , Context AS Collection ] ) AS Variant
Evaluates an expression and returns its value. This expression can use almost all operators and subroutines of Gambas
The optional context is a collection that must contain the value of each undefined symbol of Expression
DIM Context AS New Collection
Context["X"] = 2
Context["Y"] = "Gambas"
PRINT Eval("X * Len(Y)", Context)
By starting the expression with the LET
keyword, you can evaluate an assignment. In that case, the assigned value is returned.
The assignment expression can use any assignment operators, but cannot use the instructions that return something, like OPEN
This assigned expression can use almost all operators and subroutines of Gambas
Dim Context AS New Collection
Context["X"] = "Liberation Serif"
Print Eval("Let Application.Font = Font[X]", Context)