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How to set a default value for a datetime column to record creation time in a migration?
...e is a sample migration:
class CreatePosts < ActiveRecord::Migration[5.0]
def change
create_table :posts do |t|
t.datetime :modified_at, default: -> { 'CURRENT_TIMESTAMP' }
t.timestamps
end
end
end
See discussion at https://github.com/rails/rails/issues/27077 and an...
How to disable XDebug
...d look for XDebug.
Set xdebug autostart to false
xdebug.remote_autostart=0
xdebug.remote_enable=0
Disable your profiler
xdebug.profiler_enable=0
Note that there can be a performance loss even with xdebug disabled but loaded. To disable loading of the extension itself, you need to comment it...
make iframe height dynamic based on content inside- JQUERY/Javascript
...
answered Feb 6 '12 at 16:05
AristosAristos
62.7k1414 gold badges111111 silver badges144144 bronze badges
...
Very large matrices using Python and NumPy
... I've found that it's capable of handling matrices which are quite large (10000 x 10000) easily, but begins to struggle with anything much larger (trying to create a matrix of 50000 x 50000 fails). Obviously, this is because of the massive memory requirements.
...
How to handle back button in activity
...ment
– James Wierzba
Dec 6 '15 at 3:01
3
@james-wierzba handle in activity and delegate processin...
Can we define implicit conversions of enums in c#?
... foreach (TDerived value in _values.Values)
if (0 == string.Compare(value.Name, name, true) || 0 == string.Compare(value.DisplayName, name, true))
return value;
return null;
}
}
}
...
Add spaces before Capital Letters
...
204
The regexes will work fine (I even voted up Martin Browns answer), but they are expensive (and ...
Batch Renaming of Files in a Directory
...
answered Oct 22 '08 at 18:59
DzinXDzinX
43.9k99 gold badges5757 silver badges7878 bronze badges
...
iOS start Background Thread
...
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[self getResultSetFromDB:docids];
});
GCD is a newer technology, and is more efficient in terms of memory overhead and lines of code.
Updated with a hat tip to Chris Nolet, who suggested a change that makes th...