Function and Sub Procedures

Procedures are blocks of program statements that can be conditionally and repeatedly executed ("called") from other statements in a program, with optional values (arguments) passed in. When a procedure is called, it behaves like the Functions and Statements that make up the NS Basic/App Studio language. FUNCTION procedures return a value, which can be stored in a variable or used in another expression. SUB procedures execute without returning a value. If a FUNCTION procedure is called and the return value is not used, NS Basic/App Studio executes it as a SUB procedure.

To pass in multiple arguments to a FUNCTION procedure, use a comma-separated list, enclosed in parenthesis. To pass in multiple arguments to a SUB procedure, use a comma-separated list with no parenthesis. When a single argument is passed in to either a FUNCTION or a SUB procedure, parenthesis may be used; NS Basic/App Studio uses parenthesis around a single argument to evaluate an expression, not to denote an argument list.

Arguments are passed by value for numbers, strings and arrays. Objects are passed by reference.