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How to make a class conform to a protocol in Swift?
...iewDataSource'
Is expected. You will get the error until your class implements all required methods of the protocol.
So get coding :)
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How is the “greater than” or “>” character used in CSS?
I have seen this character a number of times in CSS files but I have no idea how its used. Can anyone explain it to me and show how they are useful in making a page style easier?
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Reference list item by index within Django template?
...}}, where foo is a variable with an index value in it and not a property name.
– Mike DeSimone
Jan 10 '11 at 23:06
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Running multiple commands in one line in shell
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Upvoted. Official documentation gnu.org/software/bash/manual/bash.html#Lists
– flow2k
Jul 2 '18 at 20:56
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“Insert if not exists” statement in SQLite
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If you have a table called memos that has two columns id and text you should be able to do like this:
INSERT INTO memos(id,text)
SELECT 5, 'text to insert'
WHERE NOT EXISTS(SELECT 1 FROM memos WHERE id = 5 AND text = 'text to insert');
If a record...
How to create war files
...n use Ant to set up, compile, WAR, and deploy your solution.
<target name="default" depends="setup,compile,buildwar,deploy"></target>
You can then execute one click in Eclipse to run that Ant target. Here are examples of each of the steps:
Preconditions
We'll assume that you have yo...
How to specify the order of CSS classes?
...the order in which I specify multiple classes in the attribute value has a meaning. The later class could/should overwrite definitions of the previous, but this doesn't seem to work. Here's an example:
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How do I write stderr to a file while using “tee” with a pipe?
... the STDOUT of command to the FIFO that your first tee is listening on.
Same thing for the second:
2> >(tee -a stderr.log >&2)
We use process substitution again to make a tee process that reads from STDIN and dumps it into stderr.log. tee outputs its input back on STDOUT, but since...
Converting ISO 8601-compliant String to java.util.Date
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Unfortunately, the time zone formats available to SimpleDateFormat (Java 6 and earlier) are not ISO 8601 compliant. SimpleDateFormat understands time zone strings like "GMT+01:00" or "+0100", the latter according to RFC # 822.
Even if Java 7 add...