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How to use Servlets and Ajax?
...text
Create a /some.jsp like below (note: the code doesn't expect the JSP file being placed in a subfolder, if you do so, alter servlet URL accordingly):
<!DOCTYPE html>
<html lang="en">
<head>
<title>SO question 4112686</title>
<script src="htt...
Get a list of all git commits, including the 'lost' ones
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How I solve this problem? Use git fsck and logging!
First create a file containing lost (unreachable) commits and blobs. (NOTE: if you did something like git gc then it will garbage collect all of they commits and you won't find them here!)
$git fsck --lost-found > lost_found.commits
T...
PHP Session Security
...the case in our environment here).
Lock down access to the sessions on the file system or use custom session handling
For sensitive operations consider requiring logged in users to provide their authenication details again
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What is the difference between UTF-8 and Unicode?
... treat it as one.
This is where the rules of 'UTF-8' comes in: http://www.fileformat.info/info/unicode/utf8.htm
Binary format of bytes in sequence
1st Byte 2nd Byte 3rd Byte 4th Byte Number of Free Bits Maximum Expressible Unicode Value
0xxxxxxx ...
Convert RGBA PNG to RGB with PIL
...using PIL to convert a transparent PNG image uploaded with Django to a JPG file. The output looks broken.
7 Answers
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Changing Mercurial “Default” Parent URL
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You can even add multiple entries in the [paths] section of your .hg/hgrc file.
[paths]
default = /repo_store/hg/project1
sandbox = /repo_store/hg/project1_experimental
And then can specify its alias in the mercurial commands. default repo need not be specified but others have to be like,
hg in...
How exactly does the android:onClick XML attribute differ from setOnClickListener?
...sing a fragment, Android will not look for the onClick method in the .java file of the fragment used to add the XML.
Another important thing I noticed. You mentioned you don't prefer anonymous methods. You meant to say you don't like anonymous classes.
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How to remove unused C/C++ symbols with GCC and ld?
... to discard unreferenced sections):
-Wl,--gc-sections
So if you had one file called test.cpp that had two functions declared in it, but one of them was unused, you could omit the unused one with the following command to gcc(g++):
gcc -Os -fdata-sections -ffunction-sections test.cpp -o test -Wl,-...
How big can a MySQL database get before performance starts to degrade
...think of backups, for instance. Depending on your engine, your physical db files on grow, but don't shrink, for instance with innodb. So deleting a lot of rows, doesn't help to shrink your physical files.
There's a lot to this issues and as in a lot of cases the devil is in the details.
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How to style icon color, size, and shadow of Font Awesome Icons
...n terms of best practices. You shouldn't be creating styles in shared CSS files that reference elements by #id, since only one element would be able to subscribe to that style on each page. If I downvoted it for that reason, would I not be pretty elitist? Both answerers made an effective effort t...