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编译器内部的秘密--微软的编译器是如何解析Try/Catch/Throw的 - C/C++ - 清...

...这并不是应该由编译器该干的活。这行语句会变成对函数_CxxThrowException (函数来自MSVCR100.dll或其他类似版本的dll)的调用。 这个函数有编译器内部构建。你喜欢的话,你可以自己调用它。这个函数的第一个参数是指向抛出的异常...
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使用std::string作为std::map的key出错解决 - C/C++ - 清泛网 - 专注C/C++及内核技术

...0\vc\include\xstddef(180): error C2784: “bool std::operator <(const std::_Tree<_Traits> &,const std::_Tree<_Traits> &)”: 未能从“const std::string”为“const std::_Tree<_Traits> &”推导 模板 参数 1> c:\program files (x86)\microsoft visual studio 11.0\vc\include\xtree(2245...
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Is it possible to ping a server from Javascript?

...ther parts of the source but you get the idea). function Pinger_ping(ip, callback) { if(!this.inUse) { this.inUse = true; this.callback = callback this.ip = ip; var _that = this; this.img = new Image(); this.img.onload = function() {_that.good();}; this.img.onerro...
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How to change field name in Django REST Framework

...get_alternate_name(self, obj): return obj.alternate_name Additionally, you can use serializers.CharField with source attribute: class ParkSerializer(serializers.ModelSerializer): location = serializers.CharField(source='other_fields') class Meta: model = Park fiel...
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How to generate a random number in C++?

... The most fundamental problem of your test application is that you call srand once and then call rand one time and exit. The whole point of srand function is to initialize the sequence of pseudo-random numbers with a random seed. It means that if you pass the same value to srand in two differ...
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STL:accumulate与自定义数据类型 - C/C++ - 清泛网 - 专注C/C++及内核技术

...mulate()的原型为(文件取自DEV-C++编译器): template<typename _InputIterator, typename _Tp, typename _BinaryOperation> _Tp accumulate(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOperation __binary_op) { // concept requirements __glibcxx...
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Read only file system on Android

... Not all phones and versions of android have things mounted the same. Limiting options when remounting would be best. Simply remount as rw (Read/Write): # mount -o rw,remount /system Once you are done making changes, remount t...
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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?

... platforms, memory leaks are often caused by unreleased pointers. Traditionally, it has always been of utmost importance to check your allocs, copies and retains to make sure each has a corresponding release message. ...
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Error handling with node.js streams

...ansform Transform streams are both readable and writeable, and thus are really good 'middle' streams. For this reason, they are sometimes referred to as through streams. They are similar to a duplex stream in this way, except they provide a nice interface to manipulate the data rather than just sen...
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Python - Count elements in list [duplicate]

... len(myList) should do it. len works with all the collections, and strings too. share | improve this answer | follow | ...