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What's the difference between belongs_to and has_one?
What is the difference between a belongs_to and a has_one ?
5 Answers
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Primary key or Unique index?
At work we have a big database with unique indexes instead of primary keys and all works fine.
15 Answers
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Difference between Covariance & Contra-variance
...vide so-called “multiple dispatch” or multi methods (this is basically selecting function overloads at run time, e.g. with CLOS) or get the desired effect by using dynamic typing.
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rails 3 validation on uniqueness on multiple attributes
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you can still do it the rails 2 way, and I find that more readable unless you're doing several types of validation on the same property.
– zem
Jul 3 '11 at 23:29
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FragmentPagerAdapter Exists Only In Android.Support.V4.App (and not Android.App)
I cannot find find FragmentPagerAdapter within Android.App.
5 Answers
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Django : How can I see a list of urlpatterns?
...r settings like this:
INSTALLED_APPS = (
...
'django_extensions',
...
)
And then, run this command in your terminal
./manage.py show_urls
For more information you can check the documentation.
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AngularJS passing data to $http.get request
... {user_id: user.id}
});
See: http://docs.angularjs.org/api/ng.$http#get and https://docs.angularjs.org/api/ng/service/$http#usage (shows the params param)
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onCreateOptionsMenu inside Fragments
...nu.menu_sample, menu);
super.onCreateOptionsMenu(menu,inflater);
}
And in onCreate add this line to make the options appear in your Toolbar
setHasOptionsMenu(true);
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Disable soft keyboard on NumberPicker
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Just found this and it works like a charm:
myNumberPicker.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
You can also set this in XML:
android:descendantFocusability="blocksDescendants"
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How do you remove a specific revision in the git history?
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To combine revision 3 and 4 into a single revision, you can use git rebase. If you want to remove the changes in revision 3, you need to use the edit command in the interactive rebase mode. If you want to combine the changes into a single revision...