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How assignment works with Python list slice?
Python doc says that slicing a list returns a new list.
Now if a "new" list is being returned I've the following questions related to "Assignment to slices"
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How do Python functions handle the types of the parameters that you pass in?
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Python is strongly typed because every object has a type, every object knows its type, it's impossible to accidentally or deliberately use an object of a type "as if" it was an object of a different type, and all elementary operations on the object are delegated to its type.
This has nothing to ...
Django: multiple models in one template using forms [closed]
...u have Forms A, B, and C. You print out each of the forms and the page and now you need to handle the POST.
if request.POST():
a_valid = formA.is_valid()
b_valid = formB.is_valid()
c_valid = formC.is_valid()
# we do this since 'and' short circuits and we want to check to whole page ...
What techniques can be used to speed up C++ compilation times?
...hniques
Pimpl Idiom
Take a look at the Pimpl idiom here, and here, also known as an opaque pointer or handle classes. Not only does it speed up compilation, it also increases exception safety when combined with a non-throwing swap function. The Pimpl idiom lets you reduce the dependencies between ...
How to check if two arrays are equal with JavaScript? [duplicate]
...akes no guarantee whatsoever. [2017 update: Actually the ES6 specification now guarantees object keys will be iterated in order of 1) integer properties, 2) properties in the order they were defined, then 3) symbol properties in the order they were defined. Thus IF the JSON.stringify implementation ...
How to get string objects instead of Unicode from JSON?
...e a conversion function:
I used the one from Mark Amery a couple of times now, it works great and is very easy to use. You can also use a similar function as an object_hook instead, as it might gain you a performance boost on big files. See the slightly more involved answer from Mirec Miskuf for th...
How do I best silence a warning about unused variables?
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C++17 now provides the [[maybe_unused]] attribute.
http://en.cppreference.com/w/cpp/language/attributes
Quite nice and standard.
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Eclipse error: 'Failed to create the Java Virtual Machine'
... any other text-editor application, Find the line -Xmx256m (or -Xmx1024m). Now change the default value 256m (or 1024m) to 512m. You also need to give the exact java installed version (1.6 or 1.7 or other).
Like This:
-Xmx512m
-Dosgi.requiredJavaVersion=1.6
OR
-Xmx512m
-Dosgi.requiredJavaVers...
Determine project root from a running node.js application
...his is using npm:
"scripts": {
"start": "NODE_PATH=. node app.js"
}
Now you can start your app with npm start and you're golden. I combine this with my enforce-node-path module, which prevents accidentally loading the app without NODE_PATH set. For even more control over enforcing environmen...
Assigning a variable NaN in python without numpy
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nan = float('nan')
And now you have the constant, nan.
You can similarly create NaN values for decimal.Decimal.:
dnan = Decimal('nan')
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