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PocketMatrix • View topic - Iterators
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Iterators


Iterators

Postby Squirrel » Jul 2, 2006 @ 7:19pm

Squirrel
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Posts: 26
Joined: Jun 2, 2006 @ 3:56pm
Location: Rus


Postby joshbu [MSFT] » Jul 5, 2006 @ 8:50pm

Functional concern:

Does the class Object define operator=?

If not, you're getting a compiler generated operator, which is a simple member copy. This can be bad: for example, if one of the members is a HANDLE to a Win32 object that is destroyed in the Object destructor.

Performance concern:

Do you have profiling data that suggests that the call into Object::method is a hot spot?

In most cases, Smartphone/PocketPC apps are not CPU bound: they are memory bandwidth bound. So things like cache coherentcy can matter much, much more than trying to save cycles on method calls.
joshbu AT microsoft dot-you-know-where
Windows CE Software Design Engineer

“This posting is provided “AS IS” with no warranties, and confers no rights.”
joshbu [MSFT]
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