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What exactly is Python's file.flush() doing?
...instructed.
Addendum in 2018.
Note that disks with cache mechanisms is now much more common than back in 2013, so now there are even more levels of caching and buffers involved. I assume these buffers will be handled by the sync/flush calls as well, but I don't really know.
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Setting different color for each series in scatter plot on matplotlib
...
I don't know what you mean by 'manually'. You can choose a colourmap and make a colour array easily enough:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
x = np.arange(10)
ys = [i+x+(i*x)**2 for i in ...
What's the difference between URI.escape and CGI.escape?
...es how data should be encoded/decode between web server and application.
Now, let's say that you need to escape a URI in your app. It is a more specific use case.
For that, the Ruby community used URI.escape for years. The problem with URI.escape was that it could not handle the RFC-3896 spec.
UR...
Difference between java.util.Random and java.security.SecureRandom
...l purposes. This also means that your random numbers are predictable right now, something you don't want for session IDs and the like.
How to break a Linear Congruential Generator
The assumption that an attacker would have to wait for the LCG to repeat after a full cycle is wrong. Even with an opt...
PHP foreach change original array values
...ference (&) is ... controversial. I recommend not using it unless you know why you need it and test the results.
I would recommend doing the following:
foreach ($fields as $key => $field) {
if ($field['required'] && strlen($_POST[$field['name']]) <= 0) {
$fields[$key]...
Pandas percentage of total with groupby
...r
19 s ± 77.1 ms per loop
(mean ± std. dev. of 7 runs, 1 loop each)
So now we see x10 speed up on large, high cardinality datasets.
Be sure to UV these three answers if you UV this one!!
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Git fast forward VS no fast forward merge
...re great for when you've got a collection of closely-related branches that now and then you want to just move together. Not all merges are real history events.
– Cascabel
Jul 15 '11 at 0:44
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Comparing object properties in c# [closed]
... DifferencesString has been deprectated in the CompareObjects class. But now you can get that from the ComparisonResult instead: var r = compareObjects.Compare(objectA, objectB); Assert.IsTrue(r.AreEqual, r.DifferencesString);
– Mariano Desanze
Oct 4 '14 at 1...
How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?
...arting in the top left corner (let's stick with the vertical rendering for now, keeping in mind that the horizontal one is treated the same).
consider the following html:
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
analogous to...
Reject binary with state waiting for review (can't find reject binary button)
...ary" (validation failed) or "Waiting for Review" (validation succeeded and now just wait). That's what the iTunes Connect FAQ/Manual says. ;-)
– Constantino Tsarouhas
May 2 '12 at 22:44
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