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Matplotlib discrete colorbar
...e description of each category : 1 (blue) is Sea; 2 (red) is burnt, etc... Order should be respected here ! Or using another dict maybe could help.
labels = np.array(["Sea","City","Sand","Forest"])
len_lab = len(labels)
# prepare normalizer
## Prepare bins for the normalizer
norm_bins = np.sort([*c...
Debug vs Release in CMake
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With CMake, it's generally recommended to do an "out of source" build. Create your CMakeLists.txt in the root of your project. Then from the root of your project:
mkdir Release
cd Release
cmake -DCMAKE_BUILD_TYPE=Release ..
make
And for Debug (...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...7 to finish before dispatch to the execution units, even though the higher order bits are identical anyway
The only benefit of not zero extending is ensuring the higher order bits of rax are included, for instance, if it originally contains 0xffffffffffffffff, the result would be 0xffffffff0000000...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
When building a class in CoffeeScript, should all the instance method be defined using the => ("fat arrow") operator and all the static methods being defined using the -> operator?
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When should Flask.g be used?
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Advanced Flask Patterns, as linked by Markus, explains some of the changes to g in 0.10:
g now lives in the application context.
Every request pushes a new application context, wiping the old one, so g can still be used to set flags per-request without chang...
Cast Object to Generic Type for returning
...ct() in the someObject and extract the class (as the intArrayType) from it by reflection and then call an internal private method passing those? But even doing this, I must to create an empty array and pass it in the public method, right?
– Cristiano
Jun 16 '16...
How should I structure a Python package that contains Cython code
...or to use Cython when available? It seems to me that it would be better to by default use pre-generated c files, unless user explicitly wants to use Cython, in which case he can set the environment variable or something. That would make installation more stable/robust, because user may get different...
adding noise to a signal in python
... In some contexts, it might make more sense to multiply your signal by a noise array (centered around 1), rather than adding a noise array, but of course that depends on the nature of the noise that you're trying to simulate.
– Edward Loper
Dec 27 '12 at...
pytest: assert almost equal
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I noticed that this question specifically asked about py.test. py.test 3.0 includes an approx() function (well, really class) that is very useful for this purpose.
import pytest
assert 2.2 == pytest.approx(2.3)
# fails, default is ± 2.3e-06
assert 2.2 == pyte...
Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
...ustering options are also available.
In regards to AMQP, I would say a really cool feature is the "exchange", and the ability for it to route to other exchanges. This gives you more flexibility and enables you to create a wide array of elaborate routing typologies which can come in very handy when...