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How to see if an NSString starts with a certain other string?
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answered Oct 28 '11 at 20:43
CyrilleCyrille
24.1k1212 gold badges6060 silver badges8787 bronze badges
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Get all column names of a DataTable into string array using (LINQ/Predicate)
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– Daniel Hilgarth
May 17 '13 at 8:08
3
@FLICKER: Some thinking is still required as a developer...
How can I check whether a numpy array is empty or not?
...e a look at the .size attribute. It is defined as an integer, and is zero (0) when there are no elements in the array:
import numpy as np
a = np.array([])
if a.size == 0:
# Do something when `a` is empty
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Best way to test if a generic type is a string? (C#)
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answered Aug 28 '08 at 2:08
Matt HamiltonMatt Hamilton
183k5959 gold badges376376 silver badges317317 bronze badges
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Python strptime() and timezones?
...ormat. This is equivalent to datetime(*(time.strptime(date_string, format)[0:6])).
See that [0:6]? That gets you (year, month, day, hour, minute, second). Nothing else. No mention of timezones.
Interestingly, [Win XP SP2, Python 2.6, 2.7] passing your example to time.strptime doesn't work but if ...
Algorithm to return all combinations of k elements from n
...me across is of course memory and pretty quickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous...
How to sort strings in JavaScript
...em2.attr)
return -1;
if ( item1.attr > item2.attr)
return 1;
return 0;
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JavaScript seconds to time string with format hh:mm:ss
...tring.prototype.toHHMMSS = function () {
var sec_num = parseInt(this, 10); // don't forget the second param
var hours = Math.floor(sec_num / 3600);
var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
var seconds = sec_num - (hours * 3600) - (minutes * 60);
if (hours &...
What's Go's equivalent of argv[0]?
...t my own program's name at runtime? What's Go's equivalent of C/C++'s argv[0]? To me it is useful to generate the usage with the right name.
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Fastest sort of fixed length 6 int array
...[x]) { int tmp = d[x]; d[x] = d[y]; d[y] = tmp; }
SWAP(1, 2);
SWAP(0, 2);
SWAP(0, 1);
SWAP(4, 5);
SWAP(3, 5);
SWAP(3, 4);
SWAP(0, 3);
SWAP(1, 4);
SWAP(2, 5);
SWAP(2, 4);
SWAP(1, 3);
SWAP(2, 3);
#undef SWAP
}
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