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The Use of Multiple JFrames: Good or Bad Practice? [closed]
...disadvantages that comes to mind:
It's more expensive: you will have to allocate way more resources to draw a JFrame that other kind of window container, such as Dialog or JInternalFrame.
Not user friendly: It is not easy to navigate into a bunch of JFrame stuck together, it will look like your a...
How to detect when an Android app goes to the background and come back to the foreground
...rocess had been showing a user interface, and is no longer doing so. Large allocations with the UI should be released at this point to allow memory to be better managed.
Of course, you should implement this to actually do what it says (purge memory that hasn't been used in certain time, clear some...
Is non-blocking I/O really faster than multi-threaded blocking I/O? How?
...though threads are relatively easy to create and use, the operating system allocates a significant amount of time and other resources to manage them."
CreateThread documentation on MSDN says "However, your application will have better performance if you create one thread per processor and build queu...
What are the differences between the threading and multiprocessing modules?
...faster to create and manage than processes (because the OS doesn't need to allocate a whole new virtual memory area), and inter-thread communication is usually faster than inter-process communication. But threads are harder to program. Threads can interfere with one another, and can write to each ot...
Which kind of pointer do I use when?
... managing memory.
The costs:
If you have a custom deleter (e.g. you use allocation pools) then this will incur overhead per pointer that may be easily avoided by manual deletion.
std::shared_ptr has the overhead of a reference count increment on copy, plus a decrement on destruction followed by a...
What is the purpose of setting a key in data.table?
...dix sorting) and memory efficient (only one extra column of type double is allocated).
When is setkey() required?
For grouping operations, setkey() was never an absolute requirement. That is, we can perform a cold-by or adhoc-by.
## "cold" by
require(data.table)
DT <- data.table(x=rep(1:5, ea...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
...ceipt:
{
RMAppReceiptIAP *purchase = [[RMAppReceiptIAP alloc] initWithASN1Data:data];
[purchases addObject:purchase];
break;
}
case RMAppReceiptASN1TypeOriginalAppVersion:
_originalAppVersion = RMASN1ReadUTF8String(&s, lengt...
How to automatically generate a stacktrace when my program crashes
...
What would happen if the crash comes from inside malloc? Wouldn't you then hold a lock and then get stuck as "backtrace" tries to allocate memory?
– Mattias Nilsson
Apr 17 '12 at 6:39
...
Ternary operator is twice as slow as an if-else block?
...erator. it's usage in this case just happens to cause a different register allocation. In a different case, it might be faster than if/else, as I tried to explain in my answer.
– Eren Ersönmez
Jun 27 '13 at 12:41
...
How can I record a Video in my Android App.?
...t when one is done with the object. This method releases the memory
* allocated internally.
*/
public native void release();
private native void native_setup();
private static native void native_init();
private native final void native_finalize();
@Override
protec...