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What is the runtime performance cost of a Docker container?
...on-CPU hardware); there's significant overhead around memory paging... but raw floating-point? I'd want to look at what was actually going on there -- perhaps excessive context switches.
– Charles Duffy
Jan 8 '15 at 3:38
...
jQuery equivalent of JavaScript's addEventListener method
... embed tag. The only way I found to trap a load event on these were to use raw JavaScript.
This will not work (I've tried on/bind/load methods):
$img.on('load', function () {
console.log('FOO!');
});
However, this works:
$img[0].addEventListener('load', function () {
console.log('FOO!')...
Move an array element from one array position to another
...example, this was [1]. So we take the first index of that array to get the raw 1 there.
Then we use splice to insert this element in the new_index's place. Since we padded the array above if new_index > arr.length, it will probably appear in the right place, unless they've done something strange ...
Explanation of JSONB introduced by PostgreSQL
...ted" order.
JSONB objects are stored as decompressed binary as opposed to "raw data" in JSON , where no reparsing of data is required during retrieval.
JSONB also supports indexing, which can be a significant advantage.
In general, one should prefer JSONB , unless there are specialized needs, such...
What are allowed characters in cookies?
...e going by the Netscape spec or RFC 6265, whitespace is not permitted in a raw (un-DQUOTEd) cookie value. It does nonetheless work in browsers I've tried, but I wouldn't rely on it.
– bobince
Feb 8 '13 at 11:29
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Understanding how recursive functions work
...o be bigger than b, then the answer is 0 - there aren't any numbers in the range! Therefore, we'll structure our solution as follows:
If a > b, then the answer is 0.
Otherwise (a ≤ b), get the answer as follows:
Compute the sum of the integers between a + 1 and b.
Add a to get the answer.
...
How to determine the encoding of text?
...pecified number of lines
rawdata = b''.join([f.readline() for _ in range(n_lines)])
return chardet.detect(rawdata)['encoding']
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How to get commit history for just one branch?
...
You can use a range to do that.
git log master..
If you've checked out your my_experiment branch. This will compare where master is at to HEAD (the tip of my_experiment).
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Multiple arguments vs. options object
...the last three are optional.
So why not do this? (Note: This is fairly raw Javascript. Normally I'd use a default hash and update it with the options passed in by using Object.extend or JQuery.extend or similar..)
function map(nodeList, callback, options) {
options = options || {};
var t...
Why does Python use 'magic methods'?
...ted in Python. That's more a bug than a feature, though (e.g. Python 3.2's range object can mostly handle arbitrarily large ranges, but using len with them may fail. Their __len__ fails as well though, since they're implemented in C rather than Python)
– ncoghlan
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