Assignment Statements
Overview
An assignment statement in Deluge uses the assignment operator (=) to assign the result of an expression to a variable.
Syntax
- variable = expression;
Compound Assignment Operators
A compound assignment operator is an operator that performs a calculation and an assignment at the same time. All Deluge binary arithmetic operators (that is, the ones that work on two operands) have equivalent compound assignment operators:
Examples
- The statement
- a += 10;
- is equivalent to
- a = a + 10;
Technically, an assignment is an expression, not a statement. Thus,a = 5 is an assignment expression, not an assignment statement. It becomes an assignment statement only when you add a semicolon to the end.
An assignment expression has a return value just as any other expression does; the return value is the value that’s assigned to the variable. For example, the return value of the expression a = 5 is 5. This allows you to create some interesting, but ill-advised, expressions by using assignment expressions in the middle of other expressions.
For example:
int a; int b; a = (b = 3) * 2; // a is 6, b is 3
Using assignment operators in the middle of an expression can make the expression harder to understand, so it’s not recommended.
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