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How do I install Maven with Yum?
...o be replaced with epel-6, or else yum install apache-maven will fail with error 404.
– O. R. Mapper
Oct 6 '14 at 8:39
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Convert Go map to json
...
If you had caught the error, you would have seen this:
jsonString, err := json.Marshal(datas)
fmt.Println(err)
// [] json: unsupported type: map[int]main.Foo
The thing is you cannot use integers as keys in JSON; it is forbidden. Instead, you c...
Finding out whether a string is numeric or not
...)validateString:(NSString *)string withPattern:(NSString *)pattern
{
NSError *error = nil;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:NSRegularExpressionCaseInsensitive error:&error];
NSAssert(regex, @"Unable to create regular expr...
Meaning of epsilon argument of assertEquals for double values
...epsilon would be 0 (100% accuracy, no exceptions). If you want a margin of error (say for degrees) you could set epsilon to 1 meaning that, for example, 64.2° is the same as 64.8° (since abs(64.8-64.2) < 1)
– Pieter De Bie
Sep 25 '15 at 8:14
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error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12，该符号在函数 \...
error LNK2019: 无法解析的外部符号 __imp__PlaySoundW@12，该符号在函数 "long __stdcall WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@@YGJPAUHWND__@@IIJ@Z) 中被引用#include <mmsystem.h>#pragma comment(lib, "WINMM.LIB")
#include <mmsystem.h>
#pragma comm...
error C2440: “return”: 无法从“const Screen”转换为“Screen &” - C/...
error C2440: “return”: 无法从“const Screen”转换为“Screen &”转换丢失限定符。出错代码（例子来自c++ primer 4th）：Screen& Screen::display(std::ostream& os) const{ os << contents...转换丢失限定符。
出错代码（例子来自c++ primer 4th）：
Screen...
error C2662: “Screen::move”: 不能将“this”指针从“const Screen”转...
error C2662: “Screen::move”: 不能将“this”指针从“const Screen”转换为“ Screen &” 转换丢失限定符出错代码： 成员函数定义Screen& Screen::move(index r,index c){ index row = r * width; cursor = row + c;...出错代码：
//成员函数定义
Screen& Scr...
error C2280: \'std::mutex::mutex(const std::mutex &)\' : attempting to...
error C2280: 'std::mutex::mutex(const std::mutex &)' : attempting to reference a deleted functionstd::mutex是noncopyable的结构，因此不存在拷贝构造函数，所以这里错误提示引用已经删除的函数。错误示例代码如下：解决方法：将包含std::...std::mutex是nonco...
mongodb, replicates and error: { “$err” : “not master and slaveOk=f...
mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435出现这个错误的原因是在从库上执行命令导致，默认情况下只有主库可以执行命令。当然可以通过设置使得从库也能执行命令，具体参见：http: s 出现...
解决IIS发布时global_asax的dll 的CS0433冲突问题 - 更多技术 - 清泛网 - ...
解决IIS发布时global_asax的dll 的CS0433冲突问题Server Error in ' ' Application.Compilation ErrorDescription:An error occurred during the compilation of a re...Server Error in '/' Application.
Compilation ErrorDescription: An error occurred during the compilation of a resource required t...