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Combining two Series into a DataFrame in pandas
...]:
s1 s2
A 1 3
B 2 4
In [4]: pd.concat([s1, s2], axis=1).reset_index()
Out[4]:
index s1 s2
0 A 1 3
1 B 2 4
Note: This extends to more than 2 Series.
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Super-simple example of C# observer/observable with delegates
...Here's a simple example:
public class ObservableClass
{
private Int32 _Value;
public Int32 Value
{
get { return _Value; }
set
{
if (_Value != value)
{
_Value = value;
OnValueChanged();
}
...
Getting rid of all the rounded corners in Twitter Bootstrap
...tstrap 4 if you are compiling it you can disable radius alltogether in the _custom.scss file:
$enable-rounded: false;
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...
How to play audio?
...If you don't want to mess with HTML elements:
var audio = new Audio('audio_file.mp3');
audio.play();
function play() {
var audio = new Audio('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3');
audio.play();
}
<button onclick="play()">Play Audio</but...
Execute code when Django starts ONCE only?
...d executed once.
urls.py
from django.confs.urls.defaults import *
from my_app import one_time_startup
urlpatterns = ...
one_time_startup()
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Dynamically adding a form to a Django formset with Ajax
...My template:
<h3>My Services</h3>
{{ serviceFormset.management_form }}
{% for form in serviceFormset.forms %}
<div class='table'>
<table class='no_error'>
{{ form.as_table }}
</table>
</div>
{% endfor %}
<input type="button" value="Add ...
How to get my IP address programmatically on iOS/macOS?
...s well as other solutions on this topic will not properly decode IPv6 (inet_ntoa cannot deal with them). This was pointed out to me by Jens Alfke on an Apple forum - the proper function to use is inet_ntop (look at the man page, and or refer to this inet_ntop article also provided by Jens.
The dict...
How to implement the factory method pattern in C++ correctly
...ude <memory>
class FactoryReleaseOwnership{
public:
std::unique_ptr<Foo> createFooInSomeWay(){
return std::unique_ptr<Foo>(new Foo(some, args));
}
};
// Factory retains object ownership
// Thus returning a reference.
#include <boost/ptr_container/ptr_vector.hpp&...
What is the fastest way to compute sin and cos together?
...OR A PARTICULAR PURPOSE.
$ cat main.c
#include <math.h>
struct Sin_cos {double sin; double cos;};
struct Sin_cos fsincos(double val) {
struct Sin_cos r;
r.sin = sin(val);
r.cos = cos(val);
return r;
}
$ gcc -c -S -O3 -ffast-math -mfpmath=387 main.c -o main.s
$ cat main.s
.tex...
How to get first element in a list of tuples?
...
do you mean something like this?
new_list = [ seq[0] for seq in yourlist ]
What you actually have is a list of tuple objects, not a list of sets (as your original question implied). If it is actually a list of sets, then there is no first element because set...