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How to count occurrences of a column value efficiently in SQL?
...nt because there is no S.cnt, otherwise you get an error: Invalid column name 'cnt'
– KM.
Oct 1 '09 at 14:00
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Why does viewWillAppear not get called when an app comes back from the background?
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The method viewWillAppear should be taken in the context of what is going on in your own application, and not in the context of your application being placed in the foreground when you switch back to it from another app.
In othe...
Use git “log” command in another folder
I have some php files in a Folder A (which is a git project). In these php file I want to execute "git log" but for the folder B. Folder B is another git project (so log is different between A and B).
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Image Greyscale with CSS & re-color on mouse-over?
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There are numerous methods of accomplishing this, which I'll detail with a few examples below.
Pure CSS (using only one colored image)
img.grayscale {
filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'&...
How to set a Javascript object values dynamically?
It's difficult to explain the case by words, let me give an example:
6 Answers
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What is the maximum depth of the java call stack?
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It depends on the amount of virtual memory allocated to the stack.
http://www.odi.ch/weblog/posting.php?posting=411
You can tune this with the -Xss VM parameter or with the Thread(ThreadGroup, Runnable, String, long) constructor.
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Unable to hide welcome screen in Emacs
I want to hide the welcome screen.
6 Answers
6
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Why and when to use Node.js? [duplicate]
...te large pieces of code yourself to do things that are build into other frameworks or because you can't use Node.js, because the API isn't stable yet or it's a sub 1.0 release.
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Code Golf: Collatz Conjecture
...--> 5 --> 16 --> 8 --> 4 --> 2 --> 1
;
; There's even some error checking involved:
; >> $ ./collatz
; >> Usage: ./collatz NUMBER
;
section .text
global main
extern printf
extern atoi
main:
cmp dword [esp+0x04], 2
jne .usage
mov ebx, [esp+0x08]
push dword [e...
Python: using a recursive algorithm as a generator
...n to generate certain sequences with nontrivial constraints. The problem came with a natural recursive solution. Now it happens that, even for relatively small input, the sequences are several thousands, thus I would prefer to use my algorithm as a generator instead of using it to fill a list with a...