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How to add multiple objects to ManyToMany relationship at once in Django ?
...o arguments, use *
add(*[obj1, obj2, obj3])
Addendum:
Django does not call obj.save() for each item but uses bulk_create(), instead.
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follow
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Count number of occurrences of a given substring in a string
...lapping occurrences, you'd better check the answers at: "Python regex find all overlapping matches?", or just check my other answer below.
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follo...
Multiple inheritance/prototypes in JavaScript
... first prototype which contains that property, and I return the value, or call the getter on the appropriate receiver. This is handled by Reflect.get. If no prototype contains the property, I return undefined.
The set trap is a trap for setting property values. I use find to find the first prototype...
I want my android application to be only run in portrait mode?
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In the manifest, set this for all your activities:
<activity android:name=".YourActivity"
android:configChanges="orientation"
android:screenOrientation="portrait"/>
Let me explain:
With android:configChanges="orientation" you tell Andro...
Why is document.body null in my javascript?
...body hasn't been defined at this point yet. In general, you want to create all elements before you execute javascript that uses these elements. In this case you have some javascript in the head section that uses body. Not cool.
You want to wrap this code in a window.onload handler or place it after...
Ball to Ball Collision - Detection and Handling
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To detect whether two balls collide, just check whether the distance between their centers is less than two times the radius. To do a perfectly elastic collision between the balls, you only need to worry about the component of the velocity that is ...
Can't push to GitHub because of large file which I already deleted
...mand changes the hashes of your commits which can be a real problem, especially on shared repositories. It should not be performed without understanding the consequences.
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Image library for Python 3
...actively being developed as for Oct 2014, has a nice doc, you may pip3 install Image (I was using pillow without knowing), and you from PIL import Image. It also supports all the major platforms now. When looking for a PIL for python3, this is definitely the choice.
– Yosh
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difference between offsetHeight and clientHeight
...ly because the browser already has the clientSize readily available (after all, it it the viewport), but needs to calculate offsetHeight after reflowing the whole document?
– Oded
Nov 6 '13 at 15:02
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How to run multiple .BAT files within a .BAT file
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Use:
call msbuild.bat
call unit-tests.bat
call deploy.bat
When not using CALL, the current batch file stops and the called batch file starts executing. It's a peculiar behavior dating back to the early MS-DOS days.
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