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Saving and loading objects and using pickle
...play expression in the online documentation. It's just one of the several different ways an object of type dict, which is one of several standard built-in datatypes available in Python, can be constructed.
– martineau
Dec 25 '10 at 21:52
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Dynamic constant assignment
...are the same (for the moment, anyhow), the actual string object itself is different each time the method is called. For example:
def foo
p "bar".object_id
end
foo #=> 15779172
foo #=> 15779112
Perhaps if you explained your use case—why you want to change the value of a constant in a me...
How to dynamically compose an OR query filter in Django?
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How can you compose raw queries with Django if you want to add optional conditions like above?
– user
Jul 13 '14 at 18:34
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CSS3 Spin Animation
...grees, not 359. Degrees of rotation are a continuous range of [0, 360) and if you rotate to 359.0 you will have a 1 degree tick at the start of every rotation when it warps from 359 to 0.
– mdonoughe
Aug 2 '17 at 0:42
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How do I install package.json dependencies in the current directory using npm
...ackage.json in the root. I want to install all the dependencies in a specific node_modules directory . How do I do this?
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How to remove non-alphanumeric characters?
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Here's an example if you want to include the hyphen as an allowed character. I needed this because I needed to strip out disallowed characters from a Moodle username, based on email addresses: preg_replace("/[^a-z0-9_.@\-]/", '', $string);
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How do I use ROW_NUMBER()?
...second question, the primary key of the row is what should be used to identify a particular row. Don't try and use the row number for that.
If you returned Row_Number() in your main query,
SELECT ROW_NUMBER() OVER (Order by Id) AS RowNumber, Field1, Field2, Field3
FROM User
Then when you want...
Full screen background image in an activity
...
There are several ways you can do it.
Option 1:
Create different perfect images for different dpi and place them in related drawable folder. Then set
android:background="@drawable/your_image"
Option 2:
Add a single large image. Use FrameLayout. As a first child add an ImageVie...
How to create named and latest tag in Docker?
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This works well with something like REV=$(hg identify --num)
– analytik
Jun 3 '15 at 13:41
2
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Where should Rails 3 custom validators be stored?
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If you place your custom validators in app/validators they will be automatically loaded without needing to alter your config/application.rb file.
sha...