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How to check if a value exists in an array in Ruby
... as pointed out by @campaterson. So within Rails, or if you require 'active_support', you can write:
'Unicorn'.in?(['Cat', 'Dog', 'Bird']) # => false
OTOH, there is no in operator or #in? method in Ruby itself, even though it has been proposed before, in particular by Yusuke Endoh a top notch ...
What does the [Flags] Enum Attribute mean in C#?
... And in C# 7.2 it's even clearer with leading separator! 0b_0100
– Vincenzo Petronio
Oct 26 '19 at 8:51
...
Should I use char** argv or char* argv[]?
...rchangeable in function parameter lists. See http://en.wikipedia.org/wiki/C_(programming_language)#Array-pointer_interchangeability.
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Why does MYSQL higher LIMIT offset slow the query down?
...with SELECT, the slower the query becomes, when using ORDER BY *primary_key*
6 Answers
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How to urlencode data for curl command?
...;strlen ; pos++ )); do
c=${string:$pos:1}
case "$c" in
[-_.~a-zA-Z0-9] ) o="${c}" ;;
* ) printf -v o '%%%02x' "'$c"
esac
encoded+="${o}"
done
echo "${encoded}" # You can either set a return variable (FASTER)
REPLY="${encoded}" #+or echo t...
Java8 Lambdas vs Anonymous classes
... comment by a compiler engineer: habrahabr.ru/post/313350/comments/#comment_9885460
– ZhekaKozlov
Jun 3 '17 at 3:49
@Z...
Incrementing in C++ - When to use x++ or ++x?
...t; 42; ++i)
{
std::cout << i << std::endl;
}
}
_
$> g++ -S pre.cpp
$> g++ -S post.cpp
$> diff pre.s post.s
1c1
< .file "pre.cpp"
---
> .file "post.cpp"
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How to make an ImageView with rounded corners?
...eBitmap(bitmap.getWidth(), bitmap
.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
fina...
SQL selecting rows by most recent date
...ecent date".
Modified from http://wiki.lessthandot.com/index.php/Returning_The_Maximum_Value_For_A_Row
SELECT t.chargeId, t.chargeType, t.serviceMonth FROM(
SELECT chargeId,MAX(serviceMonth) AS serviceMonth
FROM invoice
GROUP BY chargeId) x
JOIN invoice t ON x.chargeId =t.chargeI...
How do I check if an element is really visible with JavaScript? [duplicate]
...umentElement.clientHeight,
rects = element.getClientRects(),
on_top = function(r) {
var x = (r.left + r.right)/2, y = (r.top + r.bottom)/2;
return document.elementFromPoint(x, y) === element;
};
for (var i = 0, l = rects.length; i < l; i++) {
var r = rects[...