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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
...
jQuery animate backgroundColor
...l modern browsers, even IE). With Compass and SASS this is quickly done:
#foo {background:red; @include transition(background 1s)}
#foo:hover {background:yellow}
Pure CSS:
#foo {
background:red;
-webkit-transition:background 1s;
-moz-transition:background 1s;
-o-transition:background 1s;
transit...
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(...
How does Django's Meta class work?
...figuration stuff, there is nothing to stop you changing it:
In [1]: class Foo(object):
...: class Meta:
...: metaVal = 1
...:
In [2]: f1 = Foo()
In [3]: f2 = Foo()
In [4]: f1.Meta.metaVal
Out[4]: 1
In [5]: f2.Meta.metaVal = 2
In [6]: f1.Meta.metaVal
Out[6]: 2
In [7]: F...
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:
$('ul.first')
.find('.foo')
.css('background-color'...
Auto-loading lib files in Rails 4
...ls.root.join('lib')
and keep the right naming convention in lib.
in lib/foo.rb:
class Foo
end
in lib/foo/bar.rb:
class Foo::Bar
end
if you really wanna do some monkey patches in file like lib/extensions.rb, you may manually require it:
in config/initializers/require.rb:
require "#{Rails.ro...
How to tell Jackson to ignore a field during serialization if its value is null?
...onInclusion(Include.NON_NULL);
or:
@JsonInclude(Include.NON_NULL)
class Foo
{
String bar;
}
Alternatively, you could use @JsonInclude in a getter so that the attribute would be shown if the value is not null.
A more complete example is available in my answer to How to prevent null values ins...
How do I initialize the base (super) class?
...:
def __init__(self):
super(Y, self).__init__(123)
def doit(self, foo):
return super(Y, self).doit(foo)
Because python knows about old- and new-style classes, there are different ways to invoke a base method, which is why you've found multiple ways of doing so.
For completeness sake,...
How to delete multiple buffers in Vim?
...
I've just checked with c:/Program files/foo.bar, and even foo.bar.foo and it worked perfectly. fnameescape() may have been required if I used the buffer names. But I'm only checking whether the buffer names match a given expression: \.{ext}$ -- I give buffer number...
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))) +
...