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What are POD types in C++?

... With the exception of a string because you can't copy it with memcpy without first determining the string length. – user2356685 May 25 '18 at 3:51 ...
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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 -...

...如下面代码: #include <iostream> #include <fstream> #include <string> #include <direct.h> using namespace std; void main() { _mkdir("测试"); //新建一个中文文件夹 ofstream outfile( "测试/test.txt", ios::out ); //创建文件 if( !outfile ) { cout <<...
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When is assembly faster than C?

...Editor's note: more likely the FP latency bottleneck is enough to hide the extra cost of loop. Doing two Kahan summations in parallel for the odd/even elements, and adding those at the end, could maybe speed this up by a factor of 2.) Whoops, I was running a slightly different version of the code ...
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How to insert a line break in a SQL Server VARCHAR/NVARCHAR string

...nsert-carriage-return-and-new-line-feed-in-code/ You just concatenate the string and insert a CHAR(13) where you want your line break. Example: DECLARE @text NVARCHAR(100) SET @text = 'This is line 1.' + CHAR(13) + 'This is line 2.' SELECT @text This prints out the following: This is line ...
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QString to char* conversion

I was trying to convert a QString to char* type by the following methods, but they don't seem to work. 10 Answers ...
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Get first n characters of a string

How can I get the first n characters of a string in PHP? What's the fastest way to trim a string to a specific number of characters, and append '...' if needed? ...
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LPCSTR, LPCTSTR and LPTSTR

...To answer the first part of your question: LPCSTR is a pointer to a const string (LP means Long Pointer) LPCTSTR is a pointer to a const TCHAR string, (TCHAR being either a wide char or char depending on whether UNICODE is defined in your project) LPTSTR is a pointer to a (non-const) TCHAR string...
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Replace one substring for another string in shell script

... To replace the first occurrence of a pattern with a given string, use ${parameter/pattern/string}: #!/bin/bash firstString="I love Suzi and Marry" secondString="Sara" echo "${firstString/Suzi/$secondString}" # prints 'I love Sara and Marry' To replace all occurrences, use ${p...
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What breaking changes are introduced in C++11?

..."abcdef", now "def" #define _x "there" "hello"_x // now a user-defined-string-literal. Previously, expanded _x . New keywords: alignas, alignof, char16_t, char32_t, constexpr, decltype, noexcept, nullptr, static_assert, and thread_local Certain integer literals larger than can be r...
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How to send password securely over HTTP?

...nstructed as follows: The username and password are combined into a string separated by a colon, e.g.: username:password The resulting string is encoded using the RFC2045-MIME variant of Base64, except not limited to 76 char/line. The authorization method and a space i.e. "Basic ...