pattern for if/else

[DBC User]

Is there a software pattern for using if then else?
Thanks.

[Brian Gideon]

There aren't any patterns that I know of, but Martin Fowler lists
several refactoring strategies related to conditional statements in his
book titled Refactoring. For example, you can replace a nested
conditional with guard clauses.

// Original
if (a)
{
return Foo(1);
}
else
{
if (b)
{
return Foo(2);
}
else
{
return Foo(3);
}
}

// Refactored
if (a) return Foo(1);
if (b) return Foo(2);
return Foo(3);

Brian

DBC User wrote:

Is there a software pattern for using if then else?
Thanks.

[DBC User]

Thanks, I was told there is a patter may be I misunderstood.
Brian Gideon wrote:

There aren't any patterns that I know of, but Martin Fowler lists
several refactoring strategies related to conditional statements in his
book titled Refactoring. For example, you can replace a nested
conditional with guard clauses.

// Original
if (a)
{
return Foo(1);
}
else
{
if (b)
{
return Foo(2);
}
else
{
return Foo(3);
}
}

// Refactored
if (a) return Foo(1);
if (b) return Foo(2);
return Foo(3);

Brian

DBC User wrote:

Is there a software pattern for using if then else?
Thanks.

[nick_nw]

And please avoid this terrible terrible programming sin:

void Foo (bool a)
{
bool b;

if (a == true)
{
b == true;
}
else
{
b == false;
}
}

It might look stupid but you'd be surpised how many times I come across
this or variations on the same theme!

Nick
http://seecharp.blogspot.com/

[DBC User]

That is a good piece of code nick :)
Thanks.
nick_nw wrote:

And please avoid this terrible terrible programming sin:

void Foo (bool a)
{
bool b;

if (a == true)
{
b == true;
}
else
{
b == false;
}
}

It might look stupid but you'd be surpised how many times I come across
this or variations on the same theme!

Nick
http://seecharp.blogspot.com/