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Pandas groupby: How to get a union of strings
...s+')
In [5]: df
Out[5]:
A B C
0 1 0.749065 This
1 2 0.301084 is
2 3 0.463468 a
3 4 0.643961 random
4 1 0.866521 string
5 2 0.120737 !
In [6]: df.dtypes
Out[6]:
A int64
B float64
C object
dtype: object
When you apply your own functi...
What does a tilde do when it precedes an expression?
...
273
~ is a bitwise operator that flips all bits in its operand.
For example, if your number was 1...
How can I wait for set of asynchronous callback functions?
...
192
You haven't been very specific with your code, so I'll make up a scenario. Let's say you have 1...
PHP ORMs: Doctrine vs. Propel
...ria):
<?php
// Propel
$c = new Criteria();
$c->add(ExamplePeer::ID, 20);
$items = ExamplePeer::doSelectJoinFoobar($c);
// Doctrine
$items = Doctrine_Query::create()
->from('Example e')
->leftJoin('e.Foobar')
->where('e.id = ?', 20)
->execute();
?>
...
How to select all instances of a variable and edit variable name in Sublime
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Aug 24 '13 at 20:13
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Is there a good reason to use upper case for SQL keywords? [closed]
...
answered Nov 15 '08 at 2:25
Mitch WheatMitch Wheat
274k3939 gold badges435435 silver badges516516 bronze badges
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Where do “pure virtual function call” crashes come from?
...
Destructor
12.9k66 gold badges4444 silver badges101101 bronze badges
answered Sep 19 '08 at 4:12
Adam RosenfieldA...
What causes a TCP/IP reset (RST) flag to be sent?
...pp's TCP/IP connection keeps hiccuping every 10 minutes (exactly, within 1-2 seconds). I ran Wireshark and discovered that after 10 minutes of inactivity the other end is sending a packet with the reset (RST) flag set. A google search tells me "the RESET flag signifies that the receiver has become ...
Find the most common element in a list
...
21 Answers
21
Active
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Where does Visual Studio look for C++ header files?
...ects and Solutions → VC++ Directories.
In new versions of Visual Studio (2015+) the above option is deprecated and a list of default include directories is available at Project Properties → Configuration → VC++ Directories
In your case, add the directory that the header is to the project pro...