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ERROR: Error installing capybara-webkit:
...
If you are in Ubuntu do
sudo apt-get install qt4-dev-tools libqt4-dev libqt4-core libqt4-gui
If you are on Mac
brew install qt
and then
gem install capybara-webkit -v '0.11.0'
...
Pointers, smart pointers or shared pointers? [duplicate]
...ll as releasing the pointer, allowing someone else to own it. Copying them does not make sense.
Shared pointers is a stack-allocated object that wraps a pointer so that you don't have to know who owns it. When the last shared pointer for an object in memory is destructed, the wrapped pointer will al...
Java Naming Convention with Acronyms [closed]
...r this in Java, I'd like to note that the .NET Framework Design Guidelines do specify this.
Now before slamming me for being off topic, please remember that the class naming guidelines for Java and the .NET Framework are quite similar, which makes the .NET guidelines useful as a persuasive referen...
Functional programming vs Object Oriented programming [closed]
...
When do you choose functional programming over object oriented?
When you anticipate a different kind of software evolution:
Object-oriented languages are good when you have a fixed set of operations on things, and as your code...
jQuery counting elements by class - what is the best way to implement this?
What I'm trying to do is to count all of the elements in the current page with the same class and then I'm going to use it to be added onto a name for an input form. Basically I'm allowing users to click on a <span> and then by doing so add another one for more of the same type of items. But...
Insert current date in datetime format mySQL
... INTO `table` (`dateposted`) VALUES (now())");
If you need to use PHP to do it, the format it Y-m-d H:i:s so try
$date = date('Y-m-d H:i:s');
mysql_query("INSERT INTO `table` (`dateposted`) VALUES ('$date')");
share
...
Format / Suppress Scientific Notation from Python Pandas Aggregation Results
...ption('display.float_format', lambda x: '%.3f' % x)
In [28]: Series(np.random.randn(3))*1000000000
Out[28]:
0 -757322420.605
1 -1436160588.997
2 -1235116117.064
dtype: float64
I'm not sure if that's the preferred way to do this, but it works.
Converting numbers to strings purely for aest...
Allowed characters in Linux environment variable names
...(underscore) from the characters
defined in Portable Character Set and
do not begin with a digit. Other
characters may be permitted by an
implementation; applications shall
tolerate the presence of such names.
So while the names may be valid, your shell might not support anything besides...
Popstate on page's load in Chrome
I am using History API for my web app and have one issue.
I do Ajax calls to update some results on the page and use history.pushState() in order to update the browser's location bar without page reload. Then, of course, I use window.popstate in order to restore previous state when back-button i...
What is the difference between encode/decode?
...
The decode method of unicode strings really doesn't have any applications at all (unless you have some non-text data in a unicode string for some reason -- see below). It is mainly there for historical reasons, i think. In Python 3 it is completely gone.
unicode().dec...