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How to create a protocol with methods that are optional?
I noticed methods marked optional in several protocols defined in the iPhone SDK, such as the UIActionSheetDelegate protocol for example.
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SQL UPDATE all values in a field with appended string CONCAT not working
...----+-------+
| id | data |
+------+-------+
| 1 | max |
| 2 | linda |
| 3 | sam |
| 4 | henry |
+------+-------+
4 rows in set (0.02 sec)
mysql> update t set data=concat(data, 'a');
Query OK, 4 rows affected (0.01 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> selec...
Android RatingBar change star colors [closed]
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Step #1: Create your own style, by cloning one of the existing styles (from $ANDROID_HOME/platforms/$SDK/data/res/values/styles.xml), putting it in your own project's styles.xml, and referencing it when you add the widget to a layout.
Step #2: Create your own Lay...
jquery how to empty input field
I am in a mobile app and I use an input field in order user submit a number.
7 Answers
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disable textbox using jquery?
...rent values.When I click the third radio button the checkbox and textbox going to be disabled.but when I choose other two radio buttons it must be show.I need the help in Jquery.Thanks in advance....
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How to ALTER multiple columns at once in SQL Server
I need to ALTER the data types of several columns in a table.
13 Answers
13
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Do SVG docs support custom data- attributes?
In HTML5, elements can have arbitrary metadata stored in XML attributes whose names start with data- such as <p data-myid="123456"> . Is this part of the SVG spec too?
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SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW
In Oracle, I can re-create a view with a single statement, as shown here:
9 Answers
9
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Postgres: INSERT if does not exist already
I'm using Python to write to a postgres database:
17 Answers
17
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JavaScript pattern for multiple constructors
I need different constructors for my instances. What is a common pattern for that?
9 Answers
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