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Printing the correct number of decimal points with cout

...d/ #include <iostream> #include <iomanip> int main(int argc, char** argv) { float testme[] = { 0.12345, 1.2345, 12.345, 123.45, 1234.5, 12345 }; std::cout << std::setprecision(2) << std::fixed; for(int i = 0; i < 6; ++i) { std::cout << tes...
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What are the rules for the “…” token in the context of variadic templates?

...ttern = z<T>(args) } Now if I call this function passing T as {int, char, short}, then each of the function call is expanded as: g( arg0, arg1, arg2 ); h( x(arg0), x(arg1), x(arg2) ); m( y(arg0, arg1, arg2) ); n( z<int>(arg0), z<char>(arg1), z<short>(arg2) ); In ...
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What are the downsides to using Dependency Injection? [closed]

...inject - the text "Hello World". Easy enough... void Say_Something (const char *p_text) { std::cout << p_text << std::endl; } How is that more inflexible than the original? Well, what if I decide that the output should be unicode. I probably want to switch from std::cout to std::wco...
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Getting request payload from POST request in Java servlet

...ader = new BufferedReader(new InputStreamReader(inputStream)); char[] charBuffer = new char[128]; int bytesRead = -1; while ((bytesRead = bufferedReader.read(charBuffer)) > 0) { stringBuilder.append(charBuffer, 0, bytesRead); } ...
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How to check whether a string contains a substring in JavaScript?

...g we're extending the previous LSP while (j > 0 && pattern.charAt(i) != pattern.charAt(j)) j = lsp[j - 1]; if (pattern.charAt(i) == pattern.charAt(j)) j++; lsp.push(j); } // Walk through text string var j = 0; // Number of chars matched in pattern ...
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How do I add a newline to a TextView in Android?

... my own resulting in the following solution for rendering line feed escape chars: string = string.replace("\\\n", System.getProperty("line.separator")); Using the replace method you need to filter escaped linefeeds (e.g. '\\\n') Only then each instance of line feed '\n' escape chars gets rendere...
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fstream默认不支持中文路径和输出整数带逗号的解决办法 - C/C++ - 清泛网 -...

...整数转换为字符串再进行输出,如: int i = 123456789; char ch[20]; sprintf((char *)&ch, "%d", i); //整数数据转换为字符数组。 outfile << "i = " << ch << '/n'; //输出不带逗号 上述问题的解决方法有很多,大家可以试试。 fstream 中文路...
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C语言判断文件是否存在 - C/C++ - 清泛网 - 专注C/C++及内核技术

...是否存在用函数access,头文件是io.h,原型:int access(const char *filename, int amode);amode参数为0时表示检查文件的存在性,如果文件存...用函数access,头文件是io.h,原型: int access(const char *filename, int amode); amode参数为0时表示检查文...
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scoped_ptr 与 auto_ptr 与 shared_ptr 区别总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

...cout<<p.use_count()<<"::"<<p.get()<<std::endl; } #include <algorithm> char upCase(char c) { return toupper(c); } int _tmain(int argc, _TCHAR* argv[]) { shared_ptr<Foo> sp1(new Foo()); shared_ptr<Foo> sp2(sp1); shared_ptr<Foo> sp3; sp1->print(); sp2->print(); std::cout<<sp1...
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半个汉字的校验与处理(C++) - C/C++ - 清泛网 - 专注C/C++及内核技术

... // strSrc: 原始字符串 // nMaxLen: 截断后的最大长度 char *GetTruncate(char *strSrc, int nMaxLen) { if (strSrc == NULL || nMaxLen == 0) { return NULL; } int len = strlen(strSrc); if (len == 0) { ...