predecrement

predecrement( 
s_var 
) 
=> n_result

Description

Takes a variable, decrements its value by one, stores the new value back into the variable, and returns the new 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

Decremented value of the variable.

Examples

s = 2
predecrement( s ) 

=> 1
s => 1

s = 2.2
predecrement( s ) 

=> 1.2
s => 1.2

Related Topics

postdecrement

predecrement

preincrement

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