postdecrement

postdecrement( 
s_var 
) 
=> n_result

Description

Takes a variable, decrements its value by one, stores the new value back into the variable, and returns the original value. This function is a prefix form of s--. The name of the variable must be a symbol and the value must be a number.

Arguments

s_var

Variable representing a number.

Value Returned

n_result

Original value of the variable.

Examples

s = 2
postdecrement( s ) 

=> 2
s 

=> 1

s = 2.2
postdecrement( s ) 

=> 2.2
s 

=> 1.2

Related Topics

postincrement

predecrement

preincrement

Return to top