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find vs find_by vs where
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104
Use whichever one you feel suits your needs best.
The find method is usually used to retrieve ...
Undefined method 'task' using Rake 0.9.0
I just updated Rake to the latest version ( 0.9.0.beta.4 ) and the rake command ends up with the following error message:
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answered May 29 '12 at 20:25
Lars KotthoffLars Kotthoff
98.3k1313 gold badges176176 silver badges180180 bronze badges
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Check if a value is within a range of numbers
...e. You don't need "multiple if" statements to do it, either:
if (x >= 0.001 && x <= 0.009) {
// something
}
You could write yourself a "between()" function:
function between(x, min, max) {
return x >= min && x <= max;
}
// ...
if (between(x, 0.001, 0.009)) {
//...
How to get the index of a maximum element in a numpy array along one axis
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>>> a.argmax(axis=0)
array([1, 1, 0])
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Create list of single item repeated N times
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809
You can also write:
[e] * n
You should note that if e is for example an empty list you get a...
Draw in Canvas by finger, Android
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+200
Start By going through the Fingerpaint demo in the sdk sample.
Another Sample:
public class MainActivity extends Activity {
D...
Returning first x items from array
...ray_slice returns a slice of an array
$sliced_array = array_slice($array, 0, 5)
is the code you want in your case to return the first five elements
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Running a cron job at 2:30 AM everyday
How to configure a cron job to run every night at 2:30? I know how to make it run at 2, but not 2:30.
6 Answers
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