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What is the difference between char s[] and char *s?
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The difference here is that
char *s = "Hello world";
will place "Hello world" in the read-only parts of the memory, and making s a pointer to that makes any writing operation on this memory illegal.
While doing:
char s[] = ...
Why would I ever use push_back instead of emplace_back?
...mplace_back miss the full picture.
Last year, I gave a presentation at C++Now on Type Deduction in C++14. I start talking about push_back vs. emplace_back at 13:49, but there is useful information that provides some supporting evidence prior to that.
The real primary difference has to do with impl...
how to detect search engine bots with php?
...ectory of Spider names
Then you use $_SERVER['HTTP_USER_AGENT']; to check if the agent is said spider.
if(strstr(strtolower($_SERVER['HTTP_USER_AGENT']), "googlebot"))
{
// what to do
}
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How to exit from Python without traceback?
...t Exception:
traceback.print_exc(file=sys.stdout)
sys.exit(0)
if __name__ == "__main__":
main()
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How to serve an image using nodejs
I have a logo that is residing at the public/images/logo.gif . Here is my nodejs code.
11 Answers
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How do I write a short literal in C++?
.... I would guess that the compiler would be smart enough to compile this as if it's a short literal (i.e. it wouldn't actually allocate an int and then cast it every time).
The following illustrates how much you should worry about this:
a = 2L;
b = 2.0;
c = (short)2;
d = '\2';
Compile -> disa...
Using jquery to get element's position relative to viewport
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The dimensions plugin is now a part of jQuery core. The ViewPort plugin can also be useful: appelsiini.net/projects/viewport
– StriplingWarrior
Jun 3 '11 at 18:38
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Patterns for handling batch operations in REST web services?
...into batches and then post them to the server periodically.
The object, if I remember correctly, essentially just held an array of "commands" -- e.g., to extend your example, each one a record containing a "markAsRead" command, a "messageId" and maybe a reference to a callback/handler function --...
How can we programmatically detect which iOS version is device running on? [duplicate]
I want to check if the user is running the app on iOS less than 5.0 and display a label in the app.
10 Answers
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insert multiple rows via a php array into mysql
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Multiple insert/ batch insert is now supported by codeigniter. I had same problem. Though it is very late for answering question, it will help somebody. That's why answering this question.
$data = array(
array(
'title' => 'My title' ,
'nam...