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Incrementing in C++ - When to use x++ or ++x?
...e learned about the incrementation a while ago.
I know that you can use "++x" to make the incrementation before and "x++" to do it after.
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What integer hash function are good that accepts an integer hash key?
...uld pick a multiplier that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest disadvantage of this hash function is that it preserves divisibility, so if your integers are all ...
List comprehension rebinds names even after scope of comprehension. Is this right?
Comprehensions are having some unexpected interactions with scoping. Is this the expected behavior?
6 Answers
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Remove all occurrences of a value from a list?
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Functional approach:
Python 3.x
>>> x = [1,2,3,2,2,2,3,4]
>>> list(filter((2).__ne__, x))
[1, 3, 3, 4]
or
>>> x = [1,2,3,2,2,2,3,4]
>>> list(filter(lambda a: a != 2, x))
[1, 3, 3, 4]
Python 2.x
>>> x = ...
Best XML Parser for PHP [duplicate]
I have used the XML Parser before, and even though it worked OK, I wasn't happy with it in general, it felt like I was using workarounds for things that should be basic functionality.
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What is Scala's yield?
...on with for and writes a new element into the resulting sequence.
Simple example (from scala-lang)
/** Turn command line arguments to uppercase */
object Main {
def main(args: Array[String]) {
val res = for (a <- args) yield a.toUpperCase
println("Arguments: " + res.toString)
}
}
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How to pretty-print a numpy.array without scientific notation and with given precision?
...e set_printoptions to set the precision of the output:
import numpy as np
x=np.random.random(10)
print(x)
# [ 0.07837821 0.48002108 0.41274116 0.82993414 0.77610352 0.1023732
# 0.51303098 0.4617183 0.33487207 0.71162095]
np.set_printoptions(precision=3)
print(x)
# [ 0.078 0.48 0.413 ...
What are the sizes used for the iOS application splash screen?
... notice in the dimensions that follow the height takes into account a 20 pixel status bar.
Filename Dimensions
Default-Portrait.png * — 768w x 1024h
Default-PortraitUpsideDown.png — 768w x 1024h
Default-Landscape.png ** — 1024w x 748h
Default-LandscapeLeft.png — 1024w x 748h
Default-Landsca...
Can a C# lambda expression have more than one statement?
Can a C# lambda expression include more than one statement?
8 Answers
8
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Javascript: Round up to the next multiple of 5
...eger value (ranging from 2 to 5 digits in length) that rounds up to the next multiple of 5 instead of the nearest multiple of 5. Here is what I got:
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