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jquery find closest previous sibling with class
...ling without having to get all. I had a particularly long set that was too CPU intensive using prevAll().
var category = $('li.current_sub').prev('li.par_cat');
if (category.length == 0){
category = $('li.current_sub').prevUntil('li.par_cat').last().prev();
}
category.show();
This gets the firs...
PostgreSQL: Difference between text and varchar (character varying)
... increased storage space when using the blank-padded type, and a few extra CPU cycles to check the length when storing into a length-constrained column. While character(n) has performance advantages in some other database systems, there is no such advantage in PostgreSQL; in fact character(n) is usu...
How to have git log show filenames like svn log -v
...d files instead of addition + deletion.
– Suzanne Dupéron
Apr 5 '16 at 11:01
1
Note that --stat ...
How to print out more than 20 items (documents) in MongoDB's shell?
... all results from Robomongo output. Thank you!
– Andrés Botero
Jun 19 '17 at 19:21
That's great, and it also let me p...
What data type to use for hashed password field and what length?
...le numerical value, others have more parameters there (for example to tune CPU usage and RAM usage separately).
The salt. Since the salt must be globally unique, it has to be stored for each account. The salt should be generated randomly on each password change.
The hash proper, i.e. the output of t...
Bootstrap 3: pull-right for col-lg only
... edited Apr 15 '16 at 13:05
André Dion
18.2k77 gold badges5151 silver badges5757 bronze badges
answered Mar 17 '15 at 8:25
...
`testl` eax against eax?
...and sometimes faster (can macro-fuse into a compare-and-branch uop on more CPUs in more cases than CMP). That makes test the preferred idiom for comparing a register against zero. It's a peephole optimization for cmp reg,0 that you can use regardless of the semantic meaning.
The only common reaso...
Convert from MySQL datetime to another format with PHP
...hich people who come to this page actually have.
– Clément
Apr 29 '14 at 22:53
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show 2 more comments
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...
@Viktor Lannér: If you call mSurfaceHolder.unlockCanvasAndPost(c) and then c = mSurfaceHolder.lockCanvas(null), then the new c does not contain the same thing as the previous c. You can’t update just a part of a SurfaceView, which is ...
Is “double hashing” a password less secure than just hashing it once?
...on the server if you had a large user base, because you are relying on the CPU load to slow down the number of requests. It means that if you add more CPU power, you are reducing the restriction on those brute force attackers. -- However, you are completely correct about the scalability, and the wid...