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Visual Studio Hacks
book

Visual Studio Hacks

by James Avery
March 2005
Intermediate to advanced content levelIntermediate to advanced
304 pages
19h 23m
English
O'Reilly Media, Inc.
Content preview from Visual Studio Hacks
Refactor Your Code #14
Chapter 2, Master the Editor
|
67
HACK
interface IStart
{
bool IsStarted { get; set; }
}
Visual Studio will also modify the existing class to implement the new inter-
face. The Extract Interface function is a great time-saver when you need to
create an interface that is based on a current class.
Parameter Functions
The next three functions on the menu all focus on working with parame-
ters. Since the sample class does not currently contain any methods with
parameters, go ahead and add a new method with a number of different
parameters. Here is a method called
Collision that you can add to this class:
public void Collision(DateTime CrashDate, int Speed, int DamagePct)
{
int costMultiplier = 1;
// Do stuff
}
As you can see, this method has a local variable called costMultiplier and
sets the value to
1. But suppose that costMultiplier varies from vehicle to
vehicle. In this case, you’d want to pass in this multiplier as a parameter
instead of creating it as a local variable. The first of the parameter refactor-
ing functions will do just that. First, right-click on the
costMultiplier vari-
able and select the Promote Local Variable to Parameter function. This will
take the local variable and add it as a parameter to the method. Here is a
look at the modified code:
public void Collision(int costMultiplier, DateTime CrashDate,
int Speed, int DamagePct)
{
// Do stuff
}
You may be thinking that ...
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Publisher Resources

ISBN: 0596008473Errata Page