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A numeric string as array key in PHP
...nd faced with someone passing an array that could have either "accidental" indexing: array('this', 'that') or "associative" indexing: array(123=>array('this', 'that')). Now, thanks to you, I can just typehint ;) +1
– Just Plain High
Dec 8 '13 at 9:09
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Is it possible to make abstract classes in Python?
...ompiler/interpret know that all the methods are from the abstract class in question?
– Charlie Parker
Mar 17 '14 at 3:30
35
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Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
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See the C FAQ, Question 1.32
Q: What is the difference between these initializations?
char a[] = "string literal";
char *p = "string literal";
My program crashes if I try to assign a new value to p[i].
A: A string literal...
How to calculate moving average using NumPy?
...y be is faster than FFT based methods:
EDIT Corrected an off-by-one wrong indexing spotted by Bean in the code. EDIT
def moving_average(a, n=3) :
ret = np.cumsum(a, dtype=float)
ret[n:] = ret[n:] - ret[:-n]
return ret[n - 1:] / n
>>> a = np.arange(20)
>>> moving_aver...
What do 3 dots next to a parameter type mean in Java?
...trings){
// do what ever you want
}
// the code above is equivalent to
for( int i = 0; i < strings.length; i++){
// classical for. In this case you use strings[i]
}
}
This answer borrows heavily from kiswa's and Lorenzo's... and also from Graphain's comment.
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pandas: filter rows of DataFrame with operator chaining
...y , etc), but the only way I've found to filter rows is via normal bracket indexing
14 Answers
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Counting inversions in an array
...earch. The number of inversions for this element will be one less than the index number of its position in B since every lower number that appears after the first element of A will be an inversion.
2a. accumulate the number of inversions to counter variable num_inversions.
2b. remove A[1] from ar...
JavaScript equivalent of PHP's in_array()
...n their utility packages. Check out jQuery's inArray and Prototype's Array.indexOf for examples.
jQuery's implementation of it is as simple as you might expect:
function inArray(needle, haystack) {
var length = haystack.length;
for(var i = 0; i < length; i++) {
if(haystack[i] =...
Entity Attribute Value Database vs. strict Relational Model Ecommerce
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What if you had a single table with indexes for text values 1-n, then in C# (in ram) map what you want to what you need. It would still work like an EAV, but the "matches" would be domain models. Sort of like a serialization, but you could use SQL selects on ...
how to make a specific text on TextView BOLD
...ng when in doubt. The int start is a number you define, which is the start index of the span. Try 0 for start, string.().size() for end.
– wtsang02
May 17 '17 at 19:16
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