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pandas GroupBy columns with NaN (missing) values
... running an SQL server and querying the tables from there (looks a bit too complicated), or looking another library in spite of Pandas, or use my own (that I want to get rid of). Thx
– Gyula Sámuel Karli
Aug 26 '13 at 20:52
...
The name 'InitializeComponent' does not exist in the current context
...ion:
I've replaced the
<Window x:Class="myapp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
first line with this:
<RibbonWindow
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/pres...
URL query parameters to dict python
....parse library:
>>> from urllib import parse
>>> url = "http://www.example.org/default.html?ct=32&op=92&item=98"
>>> parse.urlsplit(url)
SplitResult(scheme='http', netloc='www.example.org', path='/default.html', query='ct=32&op=92&item=98', fragment='')
&g...
Download a specific tag with Git
...
git clone --branch my_abc http://git.abc.net/git/abc.git
Will clone the repo and leave you on the tag you are interested in.
Documentation for 1.8.0 of git clone states.
--branch can also take tags and detaches the HEAD at that commit in the re...
What exactly are iterator, iterable, and iteration?
What is the most basic definition of "iterable", "iterator" and "iteration" in Python?
13 Answers
...
Set NOW() as Default Value for datetime datatype?
...ATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
Reference:
http://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
http://optimize-this.blogspot.com/2012/04/datetime-default-now-finally-available.html
Prior to 5.6.5, you need to use the TIMESTAMP data type, which automa...
Is it valid to have a html form inside another html form?
...rohibitions", states that:
"form must not contain other form elements."
http://www.w3.org/TR/xhtml1/#prohibitions
As for the older HTML 3.2 spec,
the section on the FORMS element states that:
"Every form must be enclosed within a
FORM element. There can be several
forms in a single docum...
What is the difference between is_a and instanceof?
...optional third boolean argument $allow_string (defaults to false) to allow comparisons of string class names instead:
class MyBaseClass {}
class MyExtendingClass extends MyBaseClass {}
// Original behavior, evaluates to false.
is_a(MyExtendingClass::class, MyBaseClass::class);
// New behavior, ev...
What is the fastest substring search algorithm?
...
The http://www-igm.univ-mlv.fr/~lecroq/string/index.html
link you point to is
an excellent source and summary of some of the best known and researched
string matching algorithms.
Solutions to most search problems involve
trade o...
Displaying the Indian currency symbol on a website
...;html>
<head>
<link rel="stylesheet" type="text/css" href="http://cdn.webrupee.com/font">
<script src=http://cdn.webrupee.com/js type=”text/javascript”></script>
</head>
<body>
Rupee Symbol: <span class="WebRupee">Rs.</span> 200
Th...