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Change a column type from Date to DateTime during ROR migration
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answered Mar 4 '11 at 8:42
apneadivingapneadiving
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Change UICollectionViewCell size on different device orientations
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followbenfollowben
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Is MATLAB OOP slow or am I doing something wrong?
... 0.02261 sec 0.23 usec per call
nop1-5() functions: 0.02182 sec 0.22 usec per call
nop() subfunction: 0.02244 sec 0.22 usec per call
@()[] anonymous function: 0.08461 sec 0.85 usec per call
nop(obj) method: 0.24664 sec 2.47 usec per call
no...
How to change column datatype from character to numeric in PostgreSQL 8.4
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edited Apr 25 '16 at 18:14
answered Oct 7 '11 at 5:33
m...
Reading InputStream as UTF-8
...eader in = new BufferedReader(new InputStreamReader(url.openStream(), "UTF-8"));
or since Java 7:
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream(), StandardCharsets.UTF_8));
share
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Ask for User Permission to Receive UILocalNotifications in iOS 8
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Since iOS 8 you need to ask user's permission to show notifications from your app, this applies for both remote/push and local notifications. In Swift you can do it like this,
Update for Swift 2.0
func application(application: UIAppl...
Which regular expression operator means 'Don't' match this character?
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87
You can use negated character classes to exclude certain characters: for example [^abcde] will ...
How do I remove leading whitespace in Python?
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coobirdcoobird
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
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287
New solution (PostgreSQL 8.4)
SELECT
*
FROM (
SELECT
ROW_NUMBER() OVER (PARTITION BY...
Select multiple columns in data.table by their numeric indices
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185
For versions of data.table >= 1.9.8, the following all just work:
library(data.table)
dt &l...