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numpy: most efficient frequency counts for unique values in an array
...x = np.array([1,1,1,2,2,2,5,25,1,1])
y = np.bincount(x)
ii = np.nonzero(y)[0]
And then:
zip(ii,y[ii])
# [(1, 5), (2, 3), (5, 1), (25, 1)]
or:
np.vstack((ii,y[ii])).T
# array([[ 1, 5],
[ 2, 3],
[ 5, 1],
[25, 1]])
or however you want to combine the counts and th...
Using JQuery to check if no radio button in a group has been checked
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answered Jan 15 '10 at 14:36
Dominic RodgerDominic Rodger
87.2k2828 gold badges185185 silver badges205205 bronze badges
...
How to run Conda?
... @NewNameStat: See this thread stackoverflow.com/questions/9127405/…
– petezurich
Aug 22 '17 at 19:56
3
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App Inventor 2 UrsAI2ActionBar 拓展 - 溢出菜单，...菜单 · App Inventor 2 中文网
...
这些也可以作为字体使用（MaterialIcons-Regular.ttf，版本1.017）。此字体嵌入在拓展中，可供下载
（文件夹"de\ullisroboterseite\ursai2actionbar\assets"）。符号的名称（例如"arrowback"、
"menu"或"more_vert"）可以/必须使用 ... ButtonSymbol 设置。
....
Programmer Puzzle: Encoding a chess board state throughout a game
... possible (but incredibly unlikely) for one side to end up with 9 queens, 10 rooks, 10 bishops or 10 knights if all 8 pawns get promoted.
Stalemate
When in a position from which you cannot win your best tactic is to try for a stalemate. The most likely variant is where you cannot make a legal move...
Add vertical whitespace using Twitter Bootstrap?
...ation in them. This is because those classes
are applied from min-width: 0 and up, and thus are not bound by a
media query. The remaining breakpoints, however, do include a
breakpoint abbreviation.
The classes are named using the format {property}{sides}-{size} for xs
and {property}{sid...
Round to 5 (or other number) in Python
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answered Feb 16 '10 at 10:38
Alok SinghalAlok Singhal
78.5k1818 gold badges119119 silver badges149149 bronze badges
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Is Tomcat running?
...cron'd checker script which sends out an email when tomcat is down:
kill -0 `cat $CATALINA_PID` > /dev/null 2>&1
if [ $? -gt 0 ]
then
echo "Check tomcat" | mailx -s "Tomcat not running" support@dom.com
fi
I guess you could also use wget to check the health of your tomcat. If you hav...
How do I get the number of days between two dates in JavaScript?
...them into their primitive number value (milliseconds since the start of 1970).
// new Date("dateString") is browser-dependent and discouraged, so we'll write
// a simple parse function for U.S. date format (which does no error checking)
function parseDate(str) {
var mdy = str.split('/')...
Can code that is valid in both C and C++ produce different behavior when compiled in each language?
...nce.
Another one from this article:
#include <stdio.h>
int sz = 80;
int main(void)
{
struct sz { char c; };
int val = sizeof(sz); // sizeof(int) in C,
// sizeof(struct sz) in C++
printf("%d\n", val);
return 0;
}
...