2014/10/15 下午 10:09:30

iphone Programming Glossary: garbage

If you could buy two books on iOS development, which ones would you choose? [closed]

http://stackoverflow.com/questions/3196419/if-you-could-buy-two-books-on-ios-development-which-ones-would-you-choose

types obviously it's worth keeping in mind a lot of this will be similar to that of Java. Concepts like pointers and garbage collection are completely new to me. Thanks for your time. iphone objective c ios cocoa touch ipad share improve this..

iPhone - Getting Started

http://stackoverflow.com/questions/356025/iphone-getting-started

The most important concept to remember with iPhone development is memory management as the device has no concept of garbage collection. How long would it take for a moderate programmer to learn and build an app that manages a list connects to certain..

Is garbage collection supported for iPhone applications?

http://stackoverflow.com/questions/416108/is-garbage-collection-supported-for-iphone-applications

garbage collection supported for iPhone applications Does the iPhone support garbage collection If it does then what are the alternate.. garbage collection supported for iPhone applications Does the iPhone support garbage collection If it does then what are the alternate ways to perform the operations that are performaed using alloc and init.. commands. Thank you in advance for any help or direction that you can provide. iphone objective c cocoa touch ios garbage collection share improve this question No. Garbage collection is too large an overhead for the limited battery life..

NSMutableString as retain/copy

http://stackoverflow.com/questions/4995254/nsmutablestring-as-retain-copy

the release in dealloc copy like retain returns an object which you must explicitly release e.g. in dealloc in non garbage collected environments. immutable strings are still reference counted. there are exceptions to this notably CF NS String..

What do “Dirty” and “Resident” mean in relation to Virtual Memory?

http://stackoverflow.com/questions/5176074/what-do-dirty-and-resident-mean-in-relation-to-virtual-memory

share improve this question Dirty memory is memory which has been changed somehow that's memory which the garbage collector has to look at and then decide what to do with it. Depending on how you build your data structures you could cause.. has to look at and then decide what to do with it. Depending on how you build your data structures you could cause the garbage collector to mark a lot of memory as dirty having each garbage collection cycle take longer than required. Keeping this.. how you build your data structures you could cause the garbage collector to mark a lot of memory as dirty having each garbage collection cycle take longer than required. Keeping this number low means your program will run faster and will be less..

iPhone/iPad App Code Obfuscation - Is it Possible? Worth it?

http://stackoverflow.com/questions/5556849/iphone-ipad-app-code-obfuscation-is-it-possible-worth-it

performSelector may cause a leak because its selector is unknown

http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown

means that if the method you're calling someMethod is returning a non object including void you could end up with a garbage pointer value being retained released and crash. Additional Arguments One consideration is that this is the same warning..

What is the difference between Objective-C automatic reference counting and garbage collection?

http://stackoverflow.com/questions/7874342/what-is-the-difference-between-objective-c-automatic-reference-counting-and-garb

is the difference between Objective C automatic reference counting and garbage collection With the new automatic reference counting ARC introduced in Xcode 4.2 we no longer need to manually manage retain.. ARC introduced in Xcode 4.2 we no longer need to manually manage retain release in Objective C. This seems similar to garbage collection as done in Objective C on the Mac and in other languages. How does ARC differ from garbage collection iphone.. seems similar to garbage collection as done in Objective C on the Mac and in other languages. How does ARC differ from garbage collection iphone ios garbage collection automatic ref counting share improve this question the short and sweet answer..

Retain Cycles: Why is that such a bad thing?

http://stackoverflow.com/questions/791322/retain-cycles-why-is-that-such-a-bad-thing

would have to watch out and spend a long time studying each others code to avoid cycles. Some languages with garbage collectors eg C# can delete a group of objects that are no longer needed even if the group contains cycles. share improve..

What's the difference between sending -release or -drain to an Autorelease Pool?

http://stackoverflow.com/questions/797419/whats-the-difference-between-sending-release-or-drain-to-an-autorelease-pool

To ARC or not to ARC? What are the pros and cons?

http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons

experiences of ARC and would you recommend it So How much benefit can ARC bring to a project Does ARC have a cost like garbage collection in Java Have you been using ARC and if so how have you found it so far iphone objective c ipad ios5 automatic.. it today. It is faster than your old code. It is safer than your old code. It is easier than your old code. It is not garbage collection. It has no GC runtime cost. The compiler inserts retains and releases in all the places you should have anyway...