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Sqlite or MySql? How to decide? [closed]
...r an Athlon 1600. 1GB RAM. 5400RPM IDE disk. Redhat 7.3. He concludes: «I now believe that SQLite is appropriate for use as the primary database on websites that get up to 1 million hits per day.»
– Rutrus
Dec 27 '16 at 0:45
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Extracting numbers from vectors of strings
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gregexpr. I hadn't tried regexpr until just now. HUGE difference. Using regexpr puts it between Andrew's and Arun's solutions (second fastest) on a 1e6 set. Perhaps also interesting, using sub in Andrew's solution does not improve the speed.
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jQuery 1.9 .live() is not a function
...:
$('#parentElement').on('click', '.myButton', function)
If you do not know what to put as the parent, body always works:
$('body').on('click', '.myButton', function)
See also:
jQuery - how to use the “on()” method instead of “live()”?
jQuery 1.9 Migration Guide
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Creating an empty list in Python
...wrong-headed.
Readability is very subjective. I prefer [], but some very knowledgable people, like Alex Martelli, prefer list() because it is pronounceable.
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What is the most efficient/elegant way to parse a flat table into a tree?
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Now that MySQL 8.0 supports recursive queries, we can say that all popular SQL databases support recursive queries in standard syntax.
WITH RECURSIVE MyTree AS (
SELECT * FROM MyTable WHERE ParentId IS NULL
UNION ALL...
How to kill a process on a port on ubuntu
... LISTEN 6782/java
2- I have got the process Id, which is 6782, now this is the process that is using port 8080.
3- Kill the process, type:kill 6782
kill 6782
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Best way to test for a variable's existence in PHP; isset() is clearly broken
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Ah ha! NOW you're talkin'! How would you do that for, say, class properties?
– chazomaticus
Jan 6 '09 at 21:23
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What is the difference between “ is None ” and “ ==None ”
...mparison is implemented elementwise:
import numpy as np
a = np.zeros(3) # now a is array([0., 0., 0.])
a == None #compares elementwise, outputs array([False, False, False]), i.e. not boolean!!!
a is None #compares object to object, outputs False
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How do I URl encode something in Node.js?
...uerystring.stringify() (in Nicolas' answer) seem to return an empty string now.
– brandonscript
May 13 '16 at 18:18
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What does OSGi solve?
... long, 150 is not uncommon) list. In contrast, OSGi pre-wires bundles and knows for each bundle exactly which bundle provides the class. This lack of searching is a significant speed up factor at startup.
Lazy - Lazy in software is good and the OSGi technology has many mechanisms in place to do thin...