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What's the safest way to iterate through the keys of a Perl hash?
...use the function most suited to your needs.
If you just want the keys and do not plan to ever read any of the values, use keys():
foreach my $key (keys %hash) { ... }
If you just want the values, use values():
foreach my $val (values %hash) { ... }
If you need the keys and the values, use eac...
Difference between ref and out parameters in .NET [duplicate]
...same - the only difference is that a variable you pass as an out parameter doesn't need to be initialized but passing it as a ref parameter it has to be set to something.
int x;
Foo(out x); // OK
int y;
Foo(ref y); // Error: y should be initialized before calling the method
Ref parameters are fo...
How to implement “confirmation” dialog in Jquery UI dialog?
...ividual of them, I would have a "delete" button for each of them.
the psuedo html setup will be something follows:
23 Answ...
How to get mouse position in jQuery without mouse-events?
I would like to get current mouse position but I don't want to use:
7 Answers
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Which is faster : if (bool) or if(int)?
The above topic made me do some experiments with bool and int in if condition. So just out of curiosity I wrote this program:
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Responsive website zoomed out to full width on mobile
...can read more about this here: https://developer.apple.com/library/content/documentation/AppleApplications/Reference/SafariWebContent/UsingtheViewport/UsingtheViewport.html
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What is the difference between HTTP_HOST and SERVER_NAME in PHP?
... configured. Taking Apache HTTPD as an example, here's an extract from its documentation:
If no ServerName is specified, then the server attempts to deduce the hostname by performing a reverse lookup on the IP address. If no port is specified in the ServerName, then the server will use the port ...
How can I pass a member function where a free function is expected?
...proach could consist in making the member function static in which case it doesn't require any object to be called on and you can use it with the type void (*)(int, int).
If you need to access any non-static member of your class and you need to stick with function pointers, e.g., because the funct...
How to pass the -D System properties while testing on Eclipse?
I am developing on Eclipse on Windows and Code gets deployed on Unix. I am fetching the system property values using System.getProperty("key") ... How do I pass this in Eclipse so that I do not have to modify the code and it works on Eclipse for debugging?
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Node.js / Express.js - How does app.router work?
... serve /var/www/file.html.
router is code that runs your routes. When you do app.get('/user', function(req, res) { ... });, it is the router that actually invokes the callback function to process the request.
The order that you pass things to app.use determines the order in which each middleware is...