Sidebar
reference:evaluator:val
Val(
string:varname,
[bool:deref]
)
→ var
Arguments
varname
Name of the argument.deref
Optional. Dereference argument value.Return value
Value of the named argument.Description
Returns the value of a variable; varname is provided as a quoted string. This is useful for variables which contain characters that would confuse the Evaluator's parser (e.g. if the name begins with a number).
Example:
flag = Val("35mmfocallength"); // get value of the 35mmfocallength field
If the deref parameter is set to true, it causes the variable (if any) named by the first value to be dereferenced and returns its value instead of the value of the named value. For example,
a = "b"; b = "c"; Output(Val(a)); // -> "b" Output(Val(a, true)); // -> "c"