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@property retain, assign, copy, nonatomic in Objective-C
As someone that's new to Objective-C can someone give me an overview of the retain, assign, copy and any others I'm missing, that follow the @property directive? What are they doing and why would I want to use one over another?
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Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?
(Related to this question, EF4: Why does proxy creation have to be enabled when lazy loading is enabled? ).
4 Answers
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How are strings passed in .NET?
When I pass a string to a function, is a pointer to the string's contents passed, or is the entire string passed to the function on the stack like a struct would be?
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JavaScript hashmap equivalent
As made clear in update 3 on this answer , this notation:
17 Answers
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What part of Hindley-Milner do you not understand?
I swear there used to be a T-shirt for sale featuring the immortal words:
6 Answers
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Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
I've been reading the other posts on tracking down the reasons for getting a SIGSEGV in an Android app. I plan to scour my app for possible NullPointers related to Canvas use, but my SIGSEGV barfs up a different memory address each time. Plus I've seen code=1 and code=2 . If the memory addres...
What is the difference between Bower and npm?
What is the fundamental difference between bower and npm ? Just want something plain and simple. I've seen some of my colleagues use bower and npm interchangeably in their projects.
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TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...后接收端再把这个ack回来时再记一个t1，于是RTT = t1 – t0。没那么简单，这只是一个采样，不能代表普遍情况。
经典算法
RFC793 中定义的经典算法是这样的：
1）首先，先采样RTT，记下最近好几次的RTT值。
2）然后做平滑...
Is Java really slow?
Java has some degree of reputation for being slow .
19 Answers
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Why do pthreads’ condition variable functions require a mutex?
I’m reading up on pthread.h ; the condition variable related functions (like pthread_cond_wait(3) ) require a mutex as an argument. Why? As far as I can tell, I’m going to be creating a mutex just to use as that argument? What is that mutex supposed to do?
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