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Why use AJAX when WebSockets is available?
...unctionality. But for low-latency bi-directional communication it's a huge win.
– kanaka
May 7 '14 at 16:21
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How slow are .NET exceptions?
...I wish to resolve a simple issue. 99% of the time the argument for not throwing exceptions revolves around them being slow while the other side claims (with benchmark test) that the speed is not the issue. I've read numerous blogs, articles, and posts pertaining one side or the other. So which is it...
Is it better to use C void arguments “void foo(void)” or not “void foo()”? [duplicate]
...mitted identifier list and a parameter type list, the parameter type list "wins". The type of the function at the end contains a prototype:
void f();
void f(int a) {
printf("%d", a);
}
// f has now a prototype.
That is because both declarations do not say anything contradictory. The second,...
What is the difference between NULL, '\0' and 0?
...implicitly checks "is not 0", so we reverse that to mean "is 0".
The following are INVALID ways to check for a null pointer:
int mynull = 0;
<some code>
if (pointer == mynull)
To the compiler this is not a check for a null pointer, but an equality check on two variables. This might work if...
How does the Java 'for each' loop work?
...element of the `fruits` array.
}
So, overall summary:
[nsayer] The following is the longer form of what is happening:
for(Iterator<String> i = someList.iterator(); i.hasNext(); ) {
String item = i.next();
System.out.println(item);
}
Note that if you need to use
i.remove(); in ...
Escape double quotes in parameter
... Ha! I never would have guessed it was wscript's fault! Leave it to Windows :)
– Bryan Field
Oct 13 '11 at 21:41
4
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Can dplyr package be used for conditional mutating?
...adability for myself and others, but in this case it seems like data.table wins.
– Paul McMurdie
Feb 7 at 19:50
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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
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OpenCV is pretty much the same for all platforms (Win/Linux/Mac/iPhone/...). The difference is that some don't supported the GPU module of OpenCV. Have you built OpenCV for iOS already? Were you able to test it? I think these are the questions you need to answer before tryin...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...thus in temp tables or sorted results.
I have helped MySQL users who unknowingly created 1.5GB temp tables frequently and filled up their disk space. They had lots of VARCHAR(255) columns that in practice stored very short strings.
It's best to define the column based on the type of data that you...
Compiled vs. Interpreted Languages
... called (which may be many, many times...). So over time, the JIT compiler wins by a long margin.
– mikera
Sep 17 '13 at 13:47
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