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What's the difference between size_t and int in C++?

...G_PTR is an unsigned long type used for pointer precision. It is used when casting a pointer to a long type to perform pointer arithmetic. This type is declared as follows: typedef unsigned __int3264 ULONG_PTR; share ...
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C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术

...们做个指针的动态转型再调用一次: C141 * pt1 = dynamic_cast (pt); pt1-> foo();   第1行代码对应的汇编指令如下: 01 00423FBD cmp dword ptr [ebp+FFFFF73Ch],0 02 00423FC4 je 00423FD7 03 00423FC6 mov eax,dword ptr [ebp+FFFFF73Ch] 04 00423FCC add eax,5 0...
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Why are C# 4 optional parameters defined on interface not enforced on implementing class?

...act of that is the behavior you see where you get different results if you cast to an interface. share | improve this answer | follow | ...
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Position of least significant bit that is set

...her bytes by storing/reloading instead of shifting, because of the pointer-cast. (totally unnecessary BTW, and makes it endian-dependent unlike a shift wouldn't). Anyway, so not only is the microbenchmark unrealistic because of hot cache, it also has the branch predictors primed and tests inputs t...
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Is the “struct hack” technically undefined behavior?

...instead of explicitly adding the offset to the pointer returned by malloc, cast to char *, is irrelevant. Technically, p->s[0] is the single element of the char array inside the struct, the next few elements (e.g. p->s[1] through p->s[3]) are likely padding bytes inside the struct, which c...
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What is Rack middleware?

...mment about it being a way to filter requests probably comes from the RailsCast episode 151: Rack Middleware screen cast. Rack middleware evolved out of Rack and there is a great intro at Introduction to Rack middleware. There's an intro to middleware on Wikipedia here. ...
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Is PowerShell ready to replace my Cygwin shell on Windows? [closed]

...t when you want a property, you ask for it - you don't have to parse,guess,cast. I did not understand your point about "what happens when objects don't have compatible methods" - Could you say that another way or give an example of the problem? Thanks. – Jeffrey Snover - MSFT ...
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In C#, why is String a reference type that behaves like a value type?

... Not only strings are immutable reference types. Multi-cast delegates too. That is why it is safe to write protected void OnMyEventHandler() { delegate handler = this.MyEventHandler; if (null != handler) { handler(this, new EventArgs()); } } I suppo...
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How to check if PHP array is associative or sequential?

... @ARW "PHP seems to cast everything to an int in an array definition if it can." - yep, that's exactly what happens. The biggest WTF is that it even does this to floats; if you try var_dump([1.2 => 'foo', 1.5 => 'bar']); you'll discover th...
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What exactly do “IB” and “UB” mean?

...by the compiler writers. An example of this is the result of a reinterpret_cast. usually, it simply changes the type of a pointer, without modifying the address, but the mapping is actually implementation-defined, so a compiler could map to a completely different address, as long as it documented th...