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How to check if a string contains only digits in Java [duplicate]
...\\d+";
As per Java regular expressions, the + means "one or more times" and \d means "a digit".
Note: the "double backslash" is an escape sequence to get a single backslash - therefore, \\d in a java String gives you the actual result: \d
References:
Java Regular Expressions
Java Character Es...
Does deleting a branch in git remove it from the history?
... source tree, it is a very different structure from svn where all branches and tags (by convention) live in separate 'folders' of the repository alongside the special 'trunk'.
If the branch was merged into another branch before it was deleted then all of the commits will still be reachable from the...
Where Is Machine.Config?
...] should be equal to v1.0.3705, v1.1.4322, v2.0.50727 or v4.0.30319.
v3.0 and v3.5 just contain additional assemblies to v2.0.50727 so there should be no config\machine.config. v4.5.x and v4.6.x are stored inside v4.0.30319.
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Gulps gulp.watch not triggered for new or deleted files?
...w. It did not when the question was asked.
The rest of my answer still stands: gulp-watch is usually a better solution because it lets you perform specific actions only on the files that have been modified, while gulp.watch only lets you run complete tasks. For a project of a reasonable size, thi...
Getting the current page
...w *)scrollView{}
which is called when your scrollView finishes scrolling and to have number of your page really sharp
I recommend you to set your scrollView to paged enabled with this code
[scrollView setPagingEnabled:YES];
So finally it should look like that way
-(void) methodWhereYouSetYour...
Setting dynamic scope variables in AngularJs - scope.
...ng I have gotten from a routeParam or a directive attribute or whatever, and I want to create a variable on the scope based on this. So:
...
What does SQL clause “GROUP BY 1” mean?
...t_id.
You also can specify in ORDER BY.
Note : The number in ORDER BY and GROUP BY always start with 1 not with 0.
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Should I use the datetime or timestamp data type in MySQL?
Would you recommend using a datetime or a timestamp field, and why (using MySQL)?
39 Answers
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JPA: unidirectional many-to-one and cascading delete
...cade REMOVE operations so that EntityManager.remove will remove the parent and the children. You can also specify orphanRemoval as true, to delete any orphaned children when the child entity in the parent collection is set to null, i.e. remove the child when it is not present in any parent's collect...
How to sort with lambda in Python
In Python, I am trying to sort by date with lambda. I can't understand my error message. The message is:
4 Answers
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