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Using Regular Expressions to Extract a Value in Java
... System.out.println(m.group(1)); // first expression from round brackets (Testing)
System.out.println(m.group(2)); // second one (123)
System.out.println(m.group(3)); // third one (Testing)
}
}
Since you're looking for the first number, you can use such regexp:
^\D+(\d+...
How can I add a column that doesn't allow nulls in a Postgresql database?
...COLUMN mycolumn character varying(50) NOT NULL DEFAULT 'foo';
... some work (set real values as you want)...
ALTER TABLE mytable ALTER COLUMN mycolumn DROP DEFAULT;
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How to define custom exception class in Java, the easiest way?
...you don't "inherit" non-default constructors, you need to define the one taking a String in your class. Typically you use super(message) in your constructor to invoke your parent constructor. For example, like this:
public class MyException extends Exception {
public MyException(String message)...
How to delete a remote tag?
... so you may use the same name for a branch and for a tag. If you want to make sure that you cannot accidentally remove the branch instead of the tag, you can specify full ref which will never delete a branch:
git push origin :refs/tags/tagname
If you also need to delete the local tag, use:
git tag ...
find -exec a shell function in Linux?
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Since only the shell knows how to run shell functions, you have to run a shell to run a function. You also need to mark your function for export with export -f, otherwise the subshell won't inherit them:
export -f dosomething
find . -exec bash ...
How to make gradient background in android
I want to create gradient background where the gradient is in the top half and there's a solid color in the bottom half, like in this image below:
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Surrogate vs. natural/business keys [closed]
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Both. Have your cake and eat it.
Remember there is nothing special about a primary key, except that it is labelled as such. It is nothing more than a NOT NULL UNIQUE constraint, and a table can have more than one.
If you use a surrogate key...
How do I create a self-signed certificate for code signing on Windows?
... a self-signed certificate for code signing using tools from the Windows SDK?
5 Answers
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What does the “static” modifier after “import” mean?
When used like this:
9 Answers
9
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jQuery autocomplete tagging plug-in like StackOverflow's input tags? [closed]
...y:
(demo) https://github.com/yairEO/tagify
(demo) https://github.com/aehlke/tag-it
(demo) http://ioncache.github.com/Tag-Handler/
(demo) http://textextjs.com/
(demo) https://github.com/webworka/Tagedit
(demo) https://github.com/documentcloud/visualsearch/
(demo) http://harvesthq.github.io/chosen/ ...