Remove assignments to Parameters
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Revision as of 20:52, 6 August 2009 by Paul Williams (Talk | contribs)
The code assigns to a parameter.
int discount (int inputVal, int quantity, int yearToDate) {
if (inputVal > 50) inputVal -= 2;
...
}
Use a temporary variable instead.
int discount (int inputVal, int quantity, int yearToDate) {
int result = inputVal;
if (inputVal > 50) result -= 2;
...
}
The main reason for removing assignments to parameters is due to lack of clarity and to confusion between pass by value and pass by reference. Java uses pass by value exclusively.
