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Get decimal portion of a number with JavaScript
... To avoid the floating point rounding problems noted, using toFixed could help in some situations e.g. (2.3 % 1).toFixed(4) == "0.3000".
– Brian M. Hunt
Jun 16 '14 at 14:21
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Why is it impossible to override a getter-only property and add a setter? [closed]
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Because the writer of Baseclass has explicitly declared that Bar has to be a read-only property. It doesn't make sense for derivations to break this contract and make it read-write.
I'm with Microsoft on this one.
Let's say I'm a new programmer who has been tol...
How to place and center text in an SVG rectangle
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An easy solution to center text horizontally and vertically in SVG:
Set the position of the text to the absolute center of the element in which you want to center it:
If it's the parent, you could just do x="50%" y ="50%".
If it's another element, x ...
How can I use pointers in Java?
...can be created with pointers and that this can be done by the few who are experts in java. Is it true?
14 Answers
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Extracting bits with a single multiplication
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Very interesting question, and clever trick.
Let's look at a simple example of getting a single byte manipulated. Using unsigned 8 bit for simplicity. Imagine your number is xxaxxbxx and you want ab000000.
The solution consisted of two steps: a bit masking, followed by multiplication. The bit...
In Python, what is the difference between “.append()” and “+= []”?
... import dis
>>> dis.dis(compile("s = []; s.append('spam')", '', 'exec'))
1 0 BUILD_LIST 0
3 STORE_NAME 0 (s)
6 LOAD_NAME 0 (s)
9 LOAD_ATTR 1 (append)
12 LOAD_CONST ...
How to make an immutable object in Python?
...amedtuple internally inside the class instead of instantiating the object externally? I'm very new to python but the advantage to your other answer is that I can have a class hide the details and also have the power of things like optional parameters. If I only look at this answer it seems like I ne...
How to determine a user's IP address in node
...determine the IP address of a given request from within a controller? For example (in express):
19 Answers
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Sorting Python list based on the length of the string
...n an integer, not a boolean. So your code should instead read as follows:
xs.sort(lambda x,y: cmp(len(x), len(y)))
Note that cmp is a builtin function such that cmp(x, y) returns -1 if x is less than y, 0 if x is equal to y, and 1 if x is greater than y.
Of course, you can instead use the key para...
Convert RGB to RGBA over white
I have a hex color, e.g. #F4F8FB (or rgb(244, 248, 251) ) that I want converted into an as-transparent-as-possible rgba color (when displayed over white). Make sense? I'm looking for an algorithm, or at least idea of an algorithm for how to do so.
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