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How to efficiently count the number of keys/properties of an object in JavaScript?
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What is the Linux equivalent to DOS pause?
...1 specifies that it only waits for a single character. The -r puts it into raw mode, which is necessary because otherwise, if you press something like backslash, it doesn't register until you hit the next key. The -p specifies the prompt, which must be quoted if it contains spaces. The key argumen...
Why generate long serialVersionUID instead of a simple 1L?
When class implements Serializable in Eclipse, I have two options: add default serialVersionUID(1L) or generated serialVersionUID(3567653491060394677L) . I think that first one is cooler, but many times I saw people using the second option. Is there any reason to generate long serialVersionUID ?...
What does Python's eval() do?
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In Python 2.x input(...) is equivalent to eval(raw_input(...)), in Python 3.x raw_input was renamed input, which I suspect lead to your confusion (you were probably looking at the documentation for input in Python 2.x). Additionally, eval(input(...)) would work fine in Py...
C# Double - ToString() formatting with two decimal places but no rounding
How do I format a Double to a String in C# so as to have only two decimal places?
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How do I design a class in Python?
...g.footstep(0)
Now, it may be that for your case you need to read in your raw data file and compute the footstep locations. All this could be hidden in the footstep() function so that it only happens once. Something like:
class Dog:
def __init__(self):
self._footsteps=None
def footste...
How to replace a character by a newline in Vim
...u could not just use just LF nor CR to get the correct output. MS DOS used raw printer data as the text file format, Mac OS used CR and converted from that to printer's raw format and UNIX used LF and converted from that to printer's raw format.
– Mikko Rantalainen
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The definitive guide to form-based website authentication [closed]
...ly hacked, leaked or gleaned through SQL injection, and if you are storing raw, plaintext passwords, that is instant game over for your login security.
So if you can't store the password, how do you check that the login+password combination POSTed from the login form is correct? The answer is hashin...
Is it possible to use Swift's Enum in Obj-C?
...nums in Swift: They are not failable. In a fragment like if let a = MyEnum(rawValue: 12345) where 12345 is not part of that enum, the result is not an optional but some invalid enum.
– bio
Sep 5 '17 at 13:11
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