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Distributed sequence number generation?
...d that to the sequence number.
For example, node 1 generates sequence 001-00001 001-00002 001-00003 etc. and node 5 generates 005-00001 005-00002
Unique :-)
Alternately if you want some sort of a centralized system, you could consider having your sequence server give out in blocks. This reduces ...
What's the best way to break from nested loops in JavaScript?
...not a performance problem for 10 iterations, but it would be with, say, 10,000.
– Robusto
Dec 2 '13 at 14:53
7
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Split a List into smaller lists of N size
...e here. I happened to have a requirement of splitting a list with over 200,000 records into smaller lists with about 3000 each, which brought me to this thread, and I tested both methods and found the running time is almost the same. After that I tested splitting that list into lists with 3 records ...
Why would someone use WHERE 1=1 AND in a SQL clause?
... select * from t and checks:
the name is Bob; and
the salary is > $20,000
some people would add the first with a WHERE and subsequent ones with an AND thus:
select * from t where name = 'Bob' and salary > 20000
Lazy programmers (and that's not necessarily a bad trait) wouldn't distingui...
How can I remove the first line of a text file using bash/sed script?
...the sed variant, by an order of magnitude. I'm testing it on a file of 500,000K lines (no more than 50 chars per line). However, I then realized I was using the FreeBSD version of tail (which comes with OS X by default). When I switched to GNU tail, the tail call was 10 times faster than the sed cal...
CSS3 gradient background set on body doesn't stretch but instead repeats?
...round on the <html> tag.
html {
-moz-linear-gradient(top, #fff, #000);
/* etc. */
}
Background extends to the bottom and no weird scrolling behavior occurs. You can skip all of the other fixes. And this is broadly supported. I haven't found a browser that doesn't let you apply a backgr...
Script to get the HTTP status code of a list of urls?
...
I don't know why script from above andswer always get me 000 in the output, but when I run command only once without loop it works...
– Karol F
Aug 9 '16 at 7:08
...
Generate array of all letters and digits
...')] is a little more than twice as fast as (0...36).map{|i|i.to_s 36} (1.450000s versus 2.26000s where n = 100,000). If inclusion of upcase is desired, use the following: [*('a'..'z'),*('A'..'Z'),*('0'..'9')]
– Viet
Feb 20 '14 at 20:27
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White space showing up on right side of page when background image should extend full length of page
...unwanted-scrolling/
Or add the CSS directly yourself:
* {
background: #000 !important;
color: #0f0 !important;
outline: solid #f00 1px !important;
}
In my case a Facebook Like Button caused the problem.
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Is there a way to use two CSS3 box shadows on one element?
...n comma-separate shadows:
box-shadow: inset 0 2px 0px #dcffa6, 0 2px 5px #000;
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