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How to 'bulk update' with Django?
...it must be on an original QuerySet so you'll need to lean on the .filter() and .exclude() methods.
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Overlaying histograms with ggplot2 in R
I am new to R and am trying to plot 3 histograms onto the same graph.
Everything worked fine, but my problem is that you don't see where 2 histograms overlap - they look rather cut off.
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What is the proper way to check if a string is empty in Perl?
... comparisons in Perl, use eq or ne:
if ($str eq "")
{
// ...
}
The == and != operators are numeric comparison operators. They will attempt to convert both operands to integers before comparing them.
See the perlop man page for more information.
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How do you keep parents of floated elements from collapsing? [duplicate]
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Solution 1:
The most reliable and unobtrusive method appears to be this:
Demo: http://jsfiddle.net/SO_AMK/wXaEH/
HTML:
<div class="clearfix">
<div style="float: left;">Div 1</div>
<div style="float: left;">Div 2</div...
Is it safe to resolve a promise multiple times?
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As I understand promises at present, this should be 100% fine. Only thing to understand is that once resolved (or rejected), that is it for a defered object - it is done.
If you should call then(...) on it's promise again, you should i...
Sort array of objects by single key with date value
I have an array of objects with several key value pairs, and I need to sort them based on 'updated_at':
19 Answers
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How to add elements to an empty array in PHP?
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Both array_push and the method you described will work.
$cart = array();
$cart[] = 13;
$cart[] = 14;
// etc
//Above is correct. but below one is for further understanding
$cart = array();
for($i=0;$i<=5;$i++){
$cart[] = $i;
}
echo...
Python extract pattern matches
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Kind of late, but both yes and no. group(0) returns the matched text, not the first capture group. The code comment is correct, while you seem to be confusing capture groups and matches. group(1) returns the first capture group.
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Install specific git commit with pip
I'm developing a django app and I'm using pip to manage my requirements. How can I do to install a specific git's commit?
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Format floats with standard json module
I am using the standard json module in python 2.6 to serialize a list of floats. However, I'm getting results like this:
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