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Difference between `const shared_ptr` and `shared_ptr`?
...lue, the
const in boost::shared_ptr<Bar> const means that you cannot
call a non-const function on the returned temporary; if it were
for a real pointer (e.g. Bar* const), it would be completely
ignored.
In general, even here, the usual rules apply: const modifies
what precedes it: in boost::s...
Best practices when running Node.js with port 80 (Ubuntu / Linode) [closed]
...s not only applies to Linode, but Digital Ocean, AWS EC2 and other VPS providers as well. However, on RedHat based systems /etc/rc.local is /ect/rc.d/local.
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What jsf component can render a div tag?
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Addendum, or set the ID attribute. If I don't do this, it just shows up in the HTML without the surrounding DIV tags.
– James McMahon
Apr 1 '11 at 14:56
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How do I set a ViewModel on a window in XAML using DataContext property?
...it with converters to ensure only one instance of converter is present and call it direcly from xaml with ="{converters:SomethingConverter}", implying xmlns:converters points at converter namespace. public abstract class BaseValueConverter<T> : MarkupExtension, IValueConverter where T : cla...
Adding a regression line on a ggplot
...If you are using the same x and y values that you supplied in the ggplot() call and need to plot linear regression line then you don't need to use the formula inside geom_smooth(), just supply the method="lm".
ggplot(data,aes(x.plot, y.plot)) +
stat_summary(fun.data= mean_cl_normal) +
geom_smo...
What do commas and spaces in multiple classes mean in CSS?
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.container_12 .grid_6,
.container_16 .grid_8 {
width: 460px;
}
That says "make all .grid_6's within .container_12's and all .grid_8's within .container_16's 460 pixels wide." So both of the following will render the same:
<div class...
JavaScript file upload size validation
...is browser yet.");
return;
}
input = document.getElementById('fileinput');
if (!input) {
bodyAppend("p", "Um, couldn't find the fileinput element.");
}
else if (!input.files) {
bodyAppend("p", "This browser doesn't seem to support the `files` property of ...
URL-parameters and logic in Django class-based views (TemplateView)
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Technically you shouldn't since they are at the class level and are class variables. As for the NameError, where are you trying to do year = self.kwargs['year']? You should be doing it in a method, you can't do it at the class leve...
How to template If-Else structures in data-bound views?
I constantly find myself using this idiom in KO-based HTML templates:
4 Answers
4
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Python group by
...a list of the original items in the original order. For the OP's example, calling this as groupBy(lambda pair: pair[1], input) will return this dict:
{'KAT': [('11013331', 'KAT'), ('9843236', 'KAT')],
'NOT': [('9085267', 'NOT'), ('11788544', 'NOT')],
'ETH': [('5238761', 'ETH'), ('5349618', 'ETH'...