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Convert Python dict into a dataframe
........
u'2012-07-05': 392,
u'2012-07-06': 392}, orient='index', columns=['foo'])
Out[7]:
foo
2012-06-08 388
2012-06-09 388
2012-06-10 388
2012-06-11 389
2012-06-12 389
........
2012-07-05 392
2012-07-06 392
...
Should I use static_cast or reinterpret_cast when casting a void* to whatever
...nce is based on code literacy like this:
void* data = something;
MyClass* foo = reinterpret_cast<MyClass*>(data);
foo->bar();
or
typedef void* hMyClass; //typedef as a handle or reference
hMyClass = something;
const MyClass& foo = static_cast<MyClass&>(*hMyClass);
foo.bar(...
Solution to INSTALL_FAILED_INSUFFICIENT_STORAGE error on Android [closed]
The INSTALL_FAILED_INSUFFICIENT_STORAGE error is the bane of every Android developer's life. It happens regardless of app size, or how much storage is available. Rebooting the target device fixes the problem briefly, but it soon comes back. There are hundreds (if not thousands) of message board po...
jQuery vs document.querySelectorAll
...ave to be disciplined to not write jQuery like this:
$('ul.first').find('.foo').css('background-color', 'red').end().find('.bar').css('background-color', 'green').end();
This is extremely hard to read, while the latter is pretty clear:
$('ul.first')
.find('.foo')
.css('background-color'...
C++ Convert string (or char*) to wstring (or wchar_t*)
How would i assign the contents of s to ws?
16 Answers
16
...
Auto-loading lib files in Rails 4
...ls.root.join('lib')
and keep the right naming convention in lib.
in lib/foo.rb:
class Foo
end
in lib/foo/bar.rb:
class Foo::Bar
end
if you really wanna do some monkey patches in file like lib/extensions.rb, you may manually require it:
in config/initializers/require.rb:
require "#{Rails.ro...
How do I initialize the base (super) class?
...:
def __init__(self):
super(Y, self).__init__(123)
def doit(self, foo):
return super(Y, self).doit(foo)
Because python knows about old- and new-style classes, there are different ways to invoke a base method, which is why you've found multiple ways of doing so.
For completeness sake,...
How to tell Jackson to ignore a field during serialization if its value is null?
...onInclusion(Include.NON_NULL);
or:
@JsonInclude(Include.NON_NULL)
class Foo
{
String bar;
}
Alternatively, you could use @JsonInclude in a getter so that the attribute would be shown if the value is not null.
A more complete example is available in my answer to How to prevent null values ins...
Show percent % instead of counts in charts of categorical variables
...ove:
require(ggplot2)
require(scales)
p <- ggplot(mydataf, aes(x = foo)) +
geom_bar(aes(y = (..count..)/sum(..count..))) +
## version 3.0.0
scale_y_continuous(labels=percent)
Here's a reproducible example using mtcars:
ggplot(mtcars, aes(x = factor(hp))) +
...