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Dynamic validation and name in a form with AngularJS
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For those stuck on ng 1.2, this is easily the least 'hacky' fix.
– grenade
Mar 2 '15 at 16:46
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using extern template (C++11)
... types of templates in multiple compilation units (like I did today)... At least for clang, the only surefire way is to put these template definitions in your header! Be warned!
– Steven Lu
Jul 17 '14 at 3:50
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delete_all vs destroy_all?
...on all matching results of :conditions (if you have one) which could be at least NUM_OF_RESULTS SQL statements.
If you have to do something drastic such as destroy_all() on large dataset, I would probably not do it from the app and handle it manually with care. If the dataset is small enough, yo...
Why not abstract fields?
...ll have to do dynamic dispatch, and hence a method call. Java's design (at least in the early days) was, to some extent, an attempt to be minimalist. That is, the designers tried to avoid adding new features if they could be easily simulated by other features already in the language.
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Get fragment (value after hash '#') from a URL in php [closed]
...-encodes.
It may have other caveats and what not ... but I think that at least doing something with the # on the server is possible.
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When should I use a composite index?
...mn_C )
index( column_A, column_B )
index( column_A )
But it will not (at least not directly, maybe it can help partially if there are no better indices) help for queries that need
index( column_A, column_C )
Notice how column_B is missing.
In your original example, a composite index for two di...
Fetch the row which has the Max value for a column
...cle allows multiple columns to be matched in an IN clause, which should at least avoid the options that use a correlated subquery, which is seldom a good idea.
Something like this, perhaps (can't remember if the column list should be parenthesised or not):
SELECT *
FROM MyTable
WHERE (User, Date)...
How do I get the height and width of the Android Navigation Bar programmatically?
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Actually the navigation bar on tablets (at least Nexus 7) has different size in portrait and landscape so this function should look like this:
private int getNavigationBarHeight(Context context, int orientation) {
Resources resources = context.getResources();
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Oracle Differences between NVL and Coalesce
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They are not exactly synonyms... At least you can find a difference in the fact that NVL makes an implicit data type casting if the given values are of different types. So for instance, I was getting an error using COALESCE passing it two NULL values (one expli...
Rails migration: t.references with alternative name?
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You can do this all in the initial migration/column definition (at least currently in Rails 5):
t.references :transferable_as, index: true, foreign_key: {to_table: :courses}
t.references :same_as, index: true, foreign_key: {to_table: :courses}
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