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IntelliJ does not show project folders
...for me. I had to "Add Content Root" on that screen. Then for some reason all the folders magically appeared.
– Lavamantis
Jun 25 '15 at 20:39
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Difference between abstract class and interface in Python
... @L.DeLeo - are you sure your notion of has-a vs. is-a is correct? I generally view the distinction as has-a = member variable vs. is-a = inheritance (parent class or interface). Think Comparable or List in Java; those are is-a relationships, regardless of whether they're interfaces or abstract cl...
How to set RelativeLayout layout params in code not in xml?
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There are a couple problems here. First of all I don't see where you are actually instantiating button1 or button2. Secondly, dynamically declared Views (ImageViews, Buttons, etc.) get instantiated with an id of -1. An id of -1 will not work for a rule.
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Downloading images with node.js [closed]
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32
You can use Axios (a promise-based HTTP client for Node.js) to download images in the order of ...
HashMap get/put complexity
...ever it depends on the hash implementation. The default object hash is actually the internal address in the JVM heap. Are we sure it is good enough to claim that the get/put are O(1) ?
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Best way to show a loading/progress indicator?
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vwvw
32133 silver badges1212 bronze badges
answered Oct 11 '12 at 14:50
Suraj BajajSuraj Bajaj
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Singular or plural controller and helper names in Rails
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Using plural names for controllers is just a convention.
Plural names usually sound more natural (especially for controllers that are tied directly to a specific model: User -> Users, etc.), but you can use whatever you want.
As for helpers, all helpers are available for all controllers by def...
not None test in Python [duplicate]
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gotgenesgotgenes
32.1k2626 gold badges8888 silver badges119119 bronze badges
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How to find gaps in sequential numbering in mysql?
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mattmatt
4,07611 gold badge2323 silver badges3030 bronze badges
6
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ActionController::InvalidAuthenticityToken
...h were page cached. Pages got buffered with a stale authenticity token and all actions using the methods post/put/delete where recognized as forgery attempts. Error (422 Unprocessable Entity) was returned to the user.
The solution for Rails 3:
Add:
skip_before_filter :verify_authenticity_token
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