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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...ion ("bit scan reverse"). It's fast on some x86s (microcoded on others). From the manual:
Searches the source operand for the most significant set
bit (1 bit). If a most significant 1
bit is found, its bit index is stored
in the destination operand. The source operand can be a
register...
What kind of virtual machine is BEAM (the Erlang VM)?
From what I understand a virtual machine falls into two categories either "system virtual machine" or a "process virtual machine". It's kind of fuzzy to me where BEAM lies. Is there another kind of virtual machine I am not aware of?
...
How do I convert NSMutableArray to NSArray?
...
this answer is great, but how can I tell from the docs that copy creates a normal NSArray and not an NSMutableArray?
– Dan Rosenstark
May 16 '10 at 23:52
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What does the “===” operator do in Ruby? [duplicate]
...on operator, given that the best answers concerning this matter are coming from you. It was really confusing me, so thanks :)
– Maher4Ever
Aug 6 '11 at 21:45
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Which is more efficient, a for-each loop, or an iterator?
...sed underwater by the new for loop syntax, compare the generated bytecodes from the following two Java snippets. First the for loop:
List<Integer> a = new ArrayList<Integer>();
for (Integer integer : a)
{
integer.toString();
}
// Byte code
ALOAD 1
INVOKEINTERFACE java/util/List.ite...
Find the number of downloads for a particular app in apple appstore [closed]
...y give a low-level breakdown of numbers.
You could also scrape some stats from the RSS feeds generated by the iTunes Store RSS Generator but, again, this just gets currently popular apps rather than actual download numbers.
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jQuery Event Keypress: Which key was pressed?
...d of these magic numbers.
You can also make use of String.charCodeAt and .fromCharCode:
>>> String.charCodeAt('\r') == 13
true
>>> String.fromCharCode(13) == '\r'
true
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i...
Find out if ListView is scrolled to the bottom?
... your calculation stuff here. You have all your
// needed info from the parameters of this function.
// Sample calculation to determine if the last
// item is fully visible.
final int lastItem = firstVisibleItem + visibleItemCount;
if(la...
Add list to set?
...
To add the elements of a list to a set, use update
From https://docs.python.org/2/library/sets.html
s.update(t): return set s with elements added from t
E.g.
>>> s = set([1, 2])
>>> l = [3, 4]
>>> s.update(l)
>>> s
{1, 2, 3, 4}
If ...
Nested function in C
...e of nested functions? If they exist in C does their implementation differ from compiler to compiler?
9 Answers
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