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Scalar vs. primitive data type - are they the same thing?
...ar processor' in contrast to a 'vector processor'. A scalar processor is a CPU that can only handle one piece of data at a time. These processors were/are named after the arithmetic terms. Interestingly enough, when you look up 'scalar' on wikipedia, you get redirected to 'variable'.
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How do I execute a command and get the output of the command within C++ using POSIX?
...ed ;)
{
// Give some timeslice (50 ms), so we won't waste 100% CPU.
bProcessEnded = WaitForSingleObject( pi.hProcess, 50) == WAIT_OBJECT_0;
// Even if process exited - we continue reading, if
// there is some data available over pipe.
for (;;)
{
...
PHP foreach change original array values
...est your specific scenario and determine which option uses less memory and CPU time. For more information see the SO post linked below by NikiC.
Code readability.
Creating references in PHP is something that quickly gets out of hand. If you are a novice and don't have full control of what you are d...
Why does JPA have a @Transient annotation?
...field will still get serialized!
Suppose you create a entity, doing some CPU-consuming calculation to get a result and this result will not save in database. But you want to sent the entity to other Java applications to use by JMS, then you should use @Transient, not the JavaSE keyword transient. ...
What is the best algorithm for overriding GetHashCode?
...
Incidentally, 31 is a shift and subtract on the CPU, which is exceedingly fast.
– Chui Tey
Aug 22 '13 at 23:14
4
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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...lation unit (for example: a foreign library, a file on disc, network data, CPU page tables, ...). In such a case the binary structure of data is also defined in a place inaccessible to the compiler, so reordering the struct fields would create a data type that is inconsistent with the other definiti...
ListCtrl 重绘（Custom Draw） - C/C++ - 清泛网 - 专注C/C++及内核技术
... DLL的版本必须至少是4.71。但随着IE4 的发布，这已经不是问题了。(IE会夹带着这个DLL一起发布)
Custom Draw 基础
我将会尽我所能把Custom Draw的处理描述清楚，而不是简单的引用MSDN的文档。这些例子都需要你的程序有一个ListCtrl在...
await vs Task.Wait - Deadlock?
...wers:
"async await" is more complex at CIL level and thus costs memory and CPU time.
Any task can be canceled if the waiting time is unacceptable.
In the case "async await" we do not have a handler for such a task to cancel it or monitoring it.
Using Task is more flexible then "async await".
Any syn...
Difference between malloc and calloc?
... do some tricks to speed it up. I know that FreeBSD, when it gets any idle CPU time, uses that to run a simple process that just goes around and zeroes out deallocated blocks of memory, and marks blocks thus processes with a flag. So when you do calloc, it first tries to find one of such pre-zeroed ...
Why is ArrayDeque better than LinkedList
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Also, since the linked list nodes are allocated here and there, usage of CPU cache won't provide much benefit.
If it might be of interest, I have a proof that adding (appending) an element to ArrayList or ArrayDeque runs in amortized constant time; refer to this.
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