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How to install lxml on Ubuntu
...t install those development packages using apt-get.
apt-get install libxml2-dev libxslt1-dev python-dev
If you're happy with a possibly older version of lxml altogether though, you could try
apt-get install python-lxml
and be done with it. :)
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How do I skip a match when using Ctrl+D for multiple selections in Sublime Text 2?
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266
Just use Ctrl+K, Ctrl+D.
(for OS X: Cmd+K, Cmd+D)
Needs a bit of practice, but gets the job ...
Displaying Windows command prompt output and redirecting it to a file
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How to get URL of current page in PHP [duplicate]
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283
$_SERVER['REQUEST_URI']
For more details on what info is available in the $_SERVER array, se...
C# Thread safe fast(est) counter
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263
This would be simpler:
return Interlocked.Increment(ref COUNTER);
MSDN Interlocked.Incremen...
Array vs. Object efficiency in JavaScript
...mostly faster than objects. But there is no 100% correct solution.
Update 2017 - Test and Results
var a1 = [{id: 29938, name: 'name1'}, {id: 32994, name: 'name1'}];
var a2 = [];
a2[29938] = {id: 29938, name: 'name1'};
a2[32994] = {id: 32994, name: 'name1'};
var o = {};
o['29938'] = {id: 29938, n...
How to have the cp command create any necessary folders for copying a file to a destination [duplica
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283
To expand upon Christian's answer, the only reliable way to do this would be to combine mkdir ...
Difference between two dates in MySQL
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SELECT TIMEDIFF('2007-12-31 10:02:00','2007-12-30 12:01:01');
-- result: 22:00:59, the difference in HH:MM:SS format
SELECT TIMESTAMPDIFF(SECOND,'2007-12-30 12:01:01','2007-12-31 10:02:00');
-- result: 79259 the difference in seconds
So...
Linux command (like cat) to read a specified quantity of characters
...ytes. For example, to get the second 100 bytes from a file, read the first 200 with head and use tail to get the last 100:
head -c 200 file | tail -c 100
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How to pass an array within a query string?
...ch framework-specific. Some examples:
Query string:
?list_a=1&list_a=2&list_a=3&list_b[]=1&list_b[]=2&list_b[]=3&list_c=1,2,3
Rails:
"list_a": "3",
"list_b":[
"1",
"2",
"3"
],
"list_c": "1,2,3"
Angular:
"list_a": [
"1",
"2",
"3"
],
"li...