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jQuery - Trigger event when an element is removed from the DOM
...st checked, it is already built-in in current version of JQuery:
jQuery - v1.9.1
jQuery UI - v1.10.2
$("#myDiv").on("remove", function () {
alert("Element was removed");
})
Important: This is functionality of Jquery UI script (not JQuery), so you have to load both scripts (jquery and jquery...
Reducing MongoDB database file size
...the extra disk space will actually be released to the OS.
UPDATE: as of v1.9+ there is a compact command.
This command will perform a compaction "in-line". It will still need some extra space, but not as much.
MongoDB compresses the files by:
copying the files to a new location
looping thro...
Checking images for similarity with OpenCV
...lue (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different.
...
Calculating frames per second in a game
...
100
You need a smoothed average, the easiest way is to take the current answer (the time to draw t...
Numpy: find first index of value fast
...he time to find it.
The array had 1 million elements and tests were run 100 times. Results still fluctuate a bit, but the qualitative trend is clear: Python and f2py quit at the first element so they scale differently. Python gets too slow if the needle is not in the first 1%, whereas f2py is fas...
How do I plot in real-time in a while loop using matplotlib?
...os[1, ii] % c)
old_delta = delta
yield pos
def run(niter=1000, doblit=True):
"""
Display the simulation using matplotlib, optionally using blit for speed
"""
fig, ax = plt.subplots(1, 1)
ax.set_aspect('equal')
ax.set_xlim(0, 255)
ax.set_ylim(0, 255)
...
Is a GUID unique 100% of the time?
...
I think Chen's article is referring to V1 of the GUID generation algorithm, which uses a MAC address & timestamp -- the current V4 uses a pseudo-random number instead: en.wikipedia.org/wiki/Globally_Unique_Identifier#Algorithm
– Barrett
...
How to add a progress bar to a shell script?
...######## (66%)\r'
sleep 1
echo -ne '####################### (100%)\r'
echo -ne '\n'
In a comment below, puk mentions this "fails" if you start with a long line and then want to write a short line: In this case, you'll need to overwrite the length of the long line (e.g., with spaces)....
How do I install Maven with Yum?
...nks! the best maven i could get via jpackage was maven.noarchtbd which was v1.1 or maven2 which was v2.0.4 ... your alternate instructions helped a lot to get me to maven v3 :)
– pulkitsinghal
Sep 17 '12 at 0:23
...
How to open files relative to home directory
... Nope, not available to users below 1.9.3 (apidock.com/ruby/v1_9_2_180/Dir/home/class).
– Ian Vaughan
Apr 24 '13 at 12:52
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