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Difference between pre-increment and post-increment in a loop?
...ce - especially if the type being incremented is defined inline in header file (as STL implementations often are) so that the compiler can see how the method is implemented and can then know what optimizations are safe to perform. Even so, it's probably still worth sticking to pre-increment because...
Best way to use PHP to encrypt and decrypt passwords? [duplicate]
... injection attacks and misplaced db backups if you store a secret key in a file and use that to encrypt on the way to the db and decrypt on the way out. But you should use bindparams to completely avoid the issue of SQL injection.
If decide to encrypt, you should use some high level crypto library ...
How to assign name for a screen? [closed]
... putty with putty connection manager and name my screens - "tab1", "tab2", etc. - as for me the overall picture of the 8-10 tabs is more important than each individual tab name. I use the 8th tab for connecting to db, the 7th for viewing logs, etc. So when I want to reattach my screens I have writte...
SQL (MySQL) vs NoSQL (CouchDB) [closed]
...re lots about users and then things like a lot of their messages, comments etc. I have always used MySQL before but now I am minded to try something new like couchdb or similar which is not SQL.
...
Passing a 2D array to a C++ function
... TwoD>
void myFunction(TwoD& myArray){
myArray[x][y] = 5;
etc...
}
// call with
double anArray[10][10];
myFunction(anArray);
It works with any 2D "array-like" datastructure, such as std::vector<std::vector<T>>, or a user defined type to maximize code reuse.
...
Random / noise functions for GLSL
...der; I can dig up a code sample later if you'd like.
Also, check out this file for GLSL implementations of Perlin and Simplex noise, by Stefan Gustavson.
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Using do block vs braces {}
...u are doing a small operation, for example, a method call or a comparison, etc. so this makes perfect sense:
some_collection.each { |element| puts element }
But if you have slightly complex logic that goes to multiple lines then use do .. end like:
1.upto(10) do |x|
add_some_num = x + rand(10)...
How do I break out of a loop in Scala?
...it is part of the algorithm, it is not the case of writing to non-existing file (for example). So in short suggested "cure" is worse than the "illness" itself. And when I consider throwing a real exception in breakable section... and all those hoops just to avoid evil break, hmm ;-) You have to admi...
PHP: Storing 'objects' inside the $_SESSION
...ition, that I agree, But do I have to add the class definition also in the file where I have to unserialize the serialized object???
– Rajesh Paul
Sep 20 '13 at 19:08
add a co...
What are the best PHP input sanitizing functions?
...te against the list. Have checkboxes? Validate against the list. Have a file upload? Make sure the file is of an expected type, and treat the filename like unfiltered user data.
Every modern browser comes with a complete set of developer tools built right in, which makes it trivial for anyone to...