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if (key in object) or if(object.hasOwnProperty(key)
Do the following two statements produce the same output? Is there any reason to prefer one way to the other?
7 Answers
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Why is using “for…in” for array iteration a bad idea?
I've been told not to use for...in with arrays in JavaScript. Why not?
27 Answers
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'id' is a bad variable name in Python
Why is it bad to name a variable id in Python?
9 Answers
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How to initialize a two-dimensional array in Python?
I'm beginning python and I'm trying to use a two-dimensional list, that I initially fill up with the same variable in every place. I came up with this:
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What is external linkage and internal linkage?
I want to understand the external linkage and internal linkage and their difference.
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Should I use 'has_key()' or 'in' on Python dicts?
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in is definitely more pythonic.
In fact has_key() was removed in Python 3.x.
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Test if lists share any items in python
I want to check if any of the items in one list are present in another list. I can do it simply with the code below, but I suspect there might be a library function to do this. If not, is there a more pythonic method of achieving the same result.
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Where should signal handlers live in a django project?
I have just started implementing signal listeners in a django project. While I understand what they are and how to use them. I am having a hard time figuring out where I should put them. The documentation from the django site has this to say:
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Elements order in a “for (… in …)” loop
Does the "for…in" loop in Javascript loop through the hashtables/elements in the order they are declared? Is there a browser which doesn't do it in order?
The object I wish to use will be declared once and will never be modified.
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Can C++ code be valid in both C++03 and C++11 but do different things?
... to both the C++03 standard and the C++11 standard, but do different things depending on under which standard it is being compiled?
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