Let
Assigns the value of an expression to a variable or property.
Syntax:
[ Let ] varname = expression
- Let
- optional Explicit use of the Let keyword is a matter of style; it is usually omitted.
- varname
- Name of the variable or property; follows standard variable naming conventions.
- expression
- Value assigned to the variable or property.
A value expression can be assigned to a variable or property only if it is of a data type that is compatible with the variable. String expressions cannot be assigned to numeric variables, and numeric expressions cannot be assigned to string variables. Such an assignment raises an error at compile time.
Variant variables can be assigned to either string or numeric expressions. However, the reverse is not always true. Any Variant except a Null can be assigned to a string variable, but only a Variant whose value can be interpreted as a number can be assigned to a numeric variable. Use the IsNumeric function to determine if the Variant can be converted to a number.
Assigning an expression of one numeric type to a variable of a different numeric type coerces the value of the expression into the numeric type of the resulting variable.
Let statements can be used to assign one record variable to another only when both variables are of the same user-defined type. Use the LSet statement to assign record variables of different user-defined types. Use the Set statement to assign object references to variables.
Example
This example assigns the values of expressions to variables by using the explicit Let statement.
Dim MyStr, MyInt
' The following variable assignments use the Let statement.
Let MyStr = "Hello World"
Let MyInt = 5
The following are the same assignments without the Let statement.
Dim MyStr, MyInt
MyStr = "Hello World"
MyInt = 5