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How to add an extra column to a NumPy array
...timings:
In [23]: N = 10
In [24]: a = np.random.rand(N,N)
In [25]: %timeit b = np.hstack((a,np.zeros((a.shape[0],1))))
10000 loops, best of 3: 19.6 us per loop
In [27]: %timeit b = np.zeros((a.shape[0],a.shape[1]+1)); b[:,:-1] = a
100000 loops, best of 3: 5.62 us per loop
...
What does `:_*` (colon underscore star) do in Scala?
...
It "splats"1 the sequence.
Look at the constructor signature
new Elem(prefix: String, label: String, attributes: MetaData, scope: NamespaceBinding,
child: Node*)
which is called as
new Elem(prefix, label, attrib...
What is the purpose of double curly braces in React's JSX syntax?
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It's just an object literal inlined in the prop value. It's the same as
var obj = {__html: rawMarkup};
<span dangerouslySetInnerHTML={obj} />
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Selecting a row of pandas series/dataframe by integer index
...ndas-docs/stable/indexing.html
Here we have new operators, .iloc to explicity support only integer indexing, and .loc to explicity support only label indexing
e.g. imagine this scenario
In [1]: df = pd.DataFrame(np.random.rand(5,2),index=range(0,10,2),columns=list('AB'))
In [2]: df
Out[2]:
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Patterns for handling batch operations in REST web services?
What proven design patterns exist for batch operations on resources within a REST style web service?
8 Answers
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How can I generate a unique ID in Python? [duplicate]
...follow
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edited Aug 25 '14 at 21:03
Cydrobolt
6699 bronze badges
answered Jul 31 '09 at 2...
ASP.NET MVC: What is the purpose of @section? [closed]
...tion is for defining a content are override from a shared view. Basically, it is a way for you to adjust your shared view (similar to a Master Page in Web Forms).
You might find Scott Gu's write up on this very interesting.
Edit: Based on additional question clarification
The @RenderSection synta...
How to make a python, command-line program autocomplete arbitrary things NOT interpreter
...def completer(text, state):
options = [i for i in commands if i.startswith(text)]
if state < len(options):
return options[state]
else:
return None
readline.parse_and_bind("tab: complete")
readline.set_completer(completer)
The official module docs aren't much more de...
PHP - how to best determine if the current invocation is from CLI or web server?
...is from the command line (CLI) or from the web server (in my case, Apache with mod_php).
18 Answers
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Disable individual Python unit tests temporarily
How can individual unit tests be temporarily disabled when using the unittest module in Python?
7 Answers
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