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How do I compute derivative using Numpy?
...ons). This is the most robust but also the most sophisticated/difficult to set up choice. If you're fine restricting yourself to numpy syntax then Theano might be a good choice.
Here is an example using SymPy
In [1]: from sympy import *
In [2]: import numpy as np
In [3]: x = Symbol('x')
In [4]: y...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
What is the proper way to get a list of all available serial ports/devices on a Linux system?
12 Answers
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Python matplotlib multiple bars
...als = [11,12,13]
rects3 = ax.bar(ind+width*2, kvals, width, color='b')
ax.set_ylabel('Scores')
ax.set_xticks(ind+width)
ax.set_xticklabels( ('2011-Jan-4', '2011-Jan-5', '2011-Jan-6') )
ax.legend( (rects1[0], rects2[0], rects3[0]), ('y', 'z', 'k') )
def autolabel(rects):
for rect in rects:
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Return first N key:value pairs from dict
Consider the following dictionary, d:
18 Answers
18
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How to export and import environment variables in windows?
...nvironment variables sync on different machines. I just want to export the settings from one computer and import to other ones.
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insert vs emplace vs operator[] in c++ map
...s.
b. See what happens when you use some other container class (e.g. std::set or std::unordered_multiset) instead of std::unordered_map.
c. Now use a Goo object (just a renamed copy of Foo) instead of an int as the range type in an unordered_map (i.e. use unordered_map<Foo, Goo> instead of u...
Node.js check if file exists
How do i check the existence of a file ?
17 Answers
17
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What is the logic behind the “using” keyword in C++?
...generalized to provide alternate spellings
of namespace-aliasing or naming set of overloaded functions (see ✁
2.3 for further discussion). [My note: That section discusses what that syntax can look like and reasons why it isn't part of the proposal.] It may be noted that the grammar production ali...
How to use clock() in C++
...::clock() - start ) / (double) CLOCKS_PER_SEC;
std::cout<<"printf: "<< duration <<'\n';
}
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List of tables, db schema, dump etc using the Python sqlite3 API
For some reason I can't find a way to get the equivalents of sqlite's interactive shell commands:
11 Answers
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