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SQLite table constraint - unique on multiple columns
I can find syntax "charts" on this on the SQLite website, but no examples and my code is crashing. I have other tables with unique constraints on a single column, but I want to add a constraint to the table on two columns. This is what I have that is causing an SQLiteException with the message "syn...
How to programmatically set the layout_align_parent_right attribute of a Button in Relative Layout?
I have a relative layout which I am creating programmatically:
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Rails auto-assigning id that already exists
I create a new record like so:
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Difference between Select and ConvertAll in C#
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How can I create a copy of an object in Python?
I would like to create a copy of an object. I want the new object to possess all properties of the old object (values of the fields). But I want to have independent objects. So, if I change values of the fields of the new object, the old object should not be affected by that.
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How do I make this file.sh executable via double click?
First off I'm using Mac.
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image.onload event and browser cache
I want to create an alert box after an image is loaded, but if the image is saved in the browser cache, the .onload event will not be fired.
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Postgres: Distinct but only for one column
...pgsql with names (having more than 1 mio. rows), but I have also many duplicates. I select 3 fields: id , name , metadata .
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Using Core Data, iCloud and CloudKit for syncing and backup and how it works together
I am in the early stages of creating an app where I would like to save, sync and backup data. The app will not store any files just data in a database. It is going to be iOS 8 and up so I am able to use CloudKit. I did some research and still not clear on how Core Data, iCloud and CloudKit work to...
Difference between static STATIC_URL and STATIC_ROOT on Django
I am confused by static root and want to clarify things.
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