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Is there a way to iterate over a dictionary?
...alue] = value;
}
... summing up the numbers with the block approach ...
__block int sum = 0;
[dict enumerateKeysAndObjectsUsingBlock:^(NSString* key, NSNumber* value, BOOL* stop) {
sum += value.intValue;
}];
... rather than the loop approach ...
int sum = 0;
for (NSString* key in dict)
sum...
How do you create a Swift Date object?
...yy-MM-dd"
dateStringFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
let d = dateStringFormatter.dateFromString(dateString)!
self.init(timeInterval:0, sinceDate:d)
}
}
Now you can create an NSDate from Swift just by doing:
NSDate(dateString:"2014-06-06")
Pleas...
Error installing mysql2: Failed to build gem native extension
...l issue (even when using the --with-mysql-config=/usr/local/mysql/bin/mysql_config )
– Americo Savinon
Mar 8 '13 at 21:32
2
...
What's the difference between assignment operator and copy constructor?
...tialized object from some other object's data.
A(const A& rhs) : data_(rhs.data_) {}
For example:
A aa;
A a = aa; //copy constructor
An assignment operator is used to replace the data of a previously initialized object with some other object's data.
A& operator=(const A& rhs) {...
How to store arbitrary data for some HTML tags
...every possible browser is to use open classes like this: <a class='data\_articleid\_5' href="link/for/non-js-users.html>;
This is not all that elegant to the purists, but it's universally supported, standard-compliant, and very easy to manipulate. It really seems like the best possible metho...
What is the difference between decodeURIComponent and decodeURI?
...
encodeURIComponent
Not Escaped:
A-Z a-z 0-9 - _ . ! ~ * ' ( )
encodeURI()
Not Escaped:
A-Z a-z 0-9 ; , / ? : @ & = + $ - _ . ! ~ * ' ( ) #
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
https://developer.mozi...
get path for my .exe [duplicate]
...
in visualstudio 2008 you could use this code :
var _assembly = System.Reflection.Assembly
.GetExecutingAssembly().GetName().CodeBase;
var _path = System.IO.Path.GetDirectoryName(_assembly) ;
...
c++读注册表 - C/C++ - 清泛网 - 专注C/C++及内核技术
c++读注册表直接上代码：CString key;key.Format(_T("Software Microsoft Windows CurrentVersion App Paths xxx"));HKEY hKey;LONG rc = R...直接上代码：
CString key;
key.Format(_T("Software\\Microsoft\\Windows\\CurrentVersion\\App Paths\\xxx"));
HKEY hKey;
LONG rc = Reg...
c++ 代码提升权限，请求管理员身份运行权限 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ELLEXECUTEINFO sei = { sizeof(SHELLEXECUTEINFO) };
sei.fMask = SEE_MASK_NOCLOSEPROCESS;
// Ask for privileges elevation.
sei.lpVerb = TEXT("runas");
// Create a Command Prompt from which you will be able to start
// other elevated applications.
...
NSIS做的安装程序，可接受命令行参数，实现静默安装，静默卸载 - 更多技术 ...
...nly absolute paths are supported.
3.2.2 Uninstaller Specific Options
_?= sets $INSTDIR. It also stops the uninstaller from copying itself to the temporary directory and running from there. It can be used along with ExecWait to wait for the uninstaller to finish. It must be the last parameter u...