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Multiple line code example in Javadoc comment
...; tags, you should also use the @code JavaDoc annotation, which will make life much easier when it comes to HTML entities issues (in particular with Generics), e.g.:
* <pre>
* {@code
* Set<String> s;
* System.out.println(s);
* }
* </pre>
Will give correct HTML output:
Set<St...
How do I show the number keyboard on an EditText in android?
... you can't switch back. Using "number|text" does not work either. It seems if you want to show a numeric keyboard, you can't allow it switch back to text.
– user4903
Aug 18 '11 at 20:18
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Fast way of counting non-zero bits in positive integer
...nd, gmpy popcount() took about 1/20th of the time of bin(n).count("1"). So if you can install gmpy, use that.
To answer a question in the comments, for bytes I'd use a lookup table. You can generate it at runtime:
counts = bytes(bin(x).count("1") for x in range(256)) # py2: use bytearray
Or jus...
Generate JSON string from NSDictionary in iOS
... error:&error];
if (! jsonData) {
NSLog(@"%s: error: %@", __func__, error.localizedDescription);
return @"{}";
} else {
return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
}
@e...
Is int[] a reference type or a value type?
...pe, the only exception to this rule is System.ValueType, which is treated differently by the compiler.</nitpick>
– Yannick Motton
Feb 19 '13 at 14:07
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Is it Linq or Lambda?
...ways seen around lambda expressions. But LINQ and lambdas are two totally different things, both of which can be used by themselves.
Update: As svick rightly points out, LINQ with query syntax is also implemented using lambda expressions (as mentioned earlier, the compiler allows you to write in qu...
Print number of keys in Redis
...
DBSIZE returns the number of keys and it's easier to parse.
Downside: if a key has expired it may still count.
http://redis.io/commands/dbsize
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How to automatically start a service when running a docker container?
...ld phase and stops after the build is completed. Instead, you need to specify the command when the container is started using the CMD or ENTRYPOINT commands like below:
CMD mysql start
Secondly, the docker container needs a process (last command) to keep running, otherwise the container will exi...
How to use GROUP_CONCAT in a CONCAT in MySQL
If I have a table with the following data in MySQL:
7 Answers
7
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How to diff one file to an arbitrary version in Git?
How can I diff a file, say pom.xml , from the master branch to an arbitrary older version in Git?
13 Answers
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