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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 <<...
C++ templates that accept only certain types
...le parenthesis is necessary is that BOOST_STATIC_ASSERT is a macro and the extra parenthesis prevent the preprocessor from interpreting the comma within the is_base_of function arguments as a 2nd macro argument.
– jfritz42
Aug 13 '15 at 19:29
...
How to pattern match using regular expression in Scala?
...work. This is because match-case uses unapplySeq(target: Any): Option[List[String]], which returns the matching groups.
– rakensi
Dec 16 '13 at 13:01
...
Easiest way to split a string on newlines in .NET?
I need to split a string into newlines in .NET and the only way I know of to split strings is with the Split method. However that will not allow me to (easily) split on a newline, so what is the best way to do it?
...
Named placeholders in string formatting
In Python, when formatting string, I can fill placeholders by name rather than by position, like that:
19 Answers
...
How do I return multiple values from a function in C?
If I have a function that produces a result int and a result string , how do I return them both from a function?
8 Answe...
How to check for a valid Base64 encoded string
Is there a way in C# to see if a string is Base 64 encoded other than just trying to convert it and see if there is an error? I have code code like this:
...
Avoid trailing zeroes in printf()
...01357
breaks it.
What you can do is to sprintf("%.20g") the number to a string buffer then manipulate the string to only have N characters past the decimal point.
Assuming your number is in the variable num, the following function will remove all but the first N decimals, then strip off the trai...
Capitalize first letter. MySQL
...= CONCAT(UCASE(LEFT(CompanyIndustry, 1)),
SUBSTRING(CompanyIndustry, 2));
This would turn hello to Hello, wOrLd to WOrLd, BLABLA to BLABLA, etc. If you want to upper-case the first letter and lower-case the other, you just have to use LCASE function :
UPDATE tb_Compa...
Count occurrences of a char in a string using Bash
I need to count the number of occurrences of a char in a string using Bash.
7 Answers
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