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SHA1 vs md5 vs SHA256: which to use for a PHP login?
...ckoverflow article. Are any of them more secure than others? For SHA1/256, do I still use a salt?
11 Answers
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Java switch statement multiple cases
...cases for a Java switch statement. Here's an example of what I'm trying to do:
13 Answers
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How do you count the number of occurrences of a certain substring in a SQL varchar?
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The first way that comes to mind is to do it indirectly by replacing the comma with an empty string and comparing the lengths
Declare @string varchar(1000)
Set @string = 'a,b,c,d'
select len(@string) - len(replace(@string, ',', ''))
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How do you stash an untracked file?
...he new file remains in my working tree, cluttering up my future work. How do I stash this untracked file?
15 Answers
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How does facebook, gmail send the real time notification?
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The way Facebook does this is pretty interesting.
A common method of doing such notifications is to poll a script on the server (using AJAX) on a given interval (perhaps every few seconds), to check if something has happened. However, this ...
How do I specify a pointer to an overloaded function?
...), s.end(), static_cast<void (*)(int)>(&f));
Or, you can also do this:
// The compiler will figure out which f to use according to
// the function pointer declaration.
void (*fpc)(char) = &f;
std::for_each(s.begin(), s.end(), fpc); // Uses the void f(char c); overload
void (*fpi)(i...
How to use ConcurrentLinkedQueue?
How do I use a ConcurrentLinkedQueue in Java?
Using this LinkedQueue , do I need to be worried about concurrency in the queue? Or do I just have to define two methods (one to retrive elements from the list and another to add elements to the list)?
Note: obviously these two methods have to be ...
How do I get the RootViewController from a pushed controller?
... :) ty. It still seems hacky - :) I really wanted an "official" member to do the job, something like self.navigationController.rootViewController, but alas, no such thing..
– bobobobo
Nov 25 '09 at 2:21
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Array to Hash Ruby
...r ages to find a solution to this and while there are many out there, they don't seem to do the job I'm looking for.
9 Answ...
What is the coolest thing you can do in
I'm looking for the coolest thing you can do in a few lines of simple code. I'm sure you can write a Mandelbrot set in Haskell in 15 lines but it's difficult to follow.
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