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Performance - Date.now() vs Date.getTime()
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Is this because Date(optional).getTime(); has to allocate space to get a new Date object before getting the current time?
– Charlie G
Sep 20 '12 at 17:07
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Custom toast on Android: a simple example
...tch_parent"
android:layout_height="match_parent"
android:padding="10dp"
android:background="#DAAA" >
<ImageView android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginRight="10dp" />
...
Send string to stdin
...73e 0ca6 bb3e D..>bN.>.|.>...>
00000b0: 6fcc bf3e 15ef c33e e90d c83e d728 cc3e o..>...>...>.(.>
00000c0: c93f d03e ac52 d43e 6c61 d83e f36b dc3e .?.>.R.>la.>.k.>
00000d0: 2f72 e03e 0a74 e43e 7171 e83e 506a ec3e /r.>.t.>qq.>Pj.>
00000e0: 945e f03e ...
delete vs delete[] [duplicate]
... corresponds to vector new, i.e. new[].
You must use the matching pair of allocators. E.g. malloc/free, new/delete, new[]/delete[], else you get undefined behavior.
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How to display the default iOS 6 share action sheet with available share options?
... UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:sharingItems applicationActivities:nil];
[self presentViewController:activityController animated:YES completion:nil];
}
Swift
func share(sharingText: String?, sharingImage: UIImage?, sharin...
C++模板-继承-具现化 - C/C++ - 清泛网 - 专注C/C++及内核技术
...(new_handler) throw();
static void* operator new (size_t size) throw(bad_alloc);
private:
static new_handler currentHandler;
};
template<typename T>
new_handler NewHandlerSurpport<T>::set_new_handler(new_handler p) throw()
{
new_handler oldHander = currentHandler;
currentHandler = p;...
c++获取windows程序的版本号 - C/C++ - 清泛网 - 专注C/C++及内核技术
...C:\\Windows\\notepad.exe");
// Get the version information size for allocate the buffer
DWORD dwHandle;
DWORD dwDataSize = ::GetFileVersionInfoSize((LPTSTR)lpszModuleName, &dwHandle);
if ( dwDataSize == 0 )
return FALSE;
// Allocate buffer and retrieve version...
AfxIsValidAddress 测试内存地址 - C/C++ - 清泛网 - 专注C/C++及内核技术
...则返回值为0.
Remarks
The address is not restricted to blocks allocated by new.
地址不仅限于模块分配新的地址。
Example
// Allocate a 5 character array, which should have a valid memory address.
char* arr = new char[5];
// Create a null pointer, which should ...
VS Debug调试模式下内存泄露检测原理 - C/C++ - 清泛网 - 专注C/C++及内核技术
...存泄露检测原理内存泄露检测基本原理：程序调用new、malloc、realloc等内存分配函数时，将分配的内存地址，分配的大小、第几次分配、分配函数调用所在的文...内存泄露检测基本原理：
程序调用new、malloc、realloc等内存分配函...
Real differences between “java -server” and “java -client”?
...visible immediate difference in older versions of Java would be the memory allocated to a -client as opposed to a -server application. For instance, on my Linux system, I get:
$ java -XX:+PrintFlagsFinal -version 2>&1 | grep -i -E 'heapsize|permsize|version'
uintx AdaptivePermSizeWeight ...