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How to concatenate two IEnumerable into a new IEnumerable?
...es which will not change during the lifetime of Cat, and which can be read from without side-effects, then Cat may be used directly. Otherwise, it may be a good idea to call ToList() on Cat and use the resulting List<T> (which will represent a snapshot of the contents of A and B).
Some enume...
How can I declare and use Boolean variables in a shell script?
....
if $the_world_is_flat ; then
echo 'Be careful not to fall off!'
fi
From: Using boolean variables in Bash
The reason the original answer is included here is because the comments before the revision on Feb 12, 2014 pertain only to the original answer, and many of the comments are wrong when a...
Is it possible to have empty RequestParam values use the defaultValue?
...ll) {
i = 10;
}
// ...
}
I have removed the defaultValue from the example above, but you may want to include it if you expect to receive requests where it isn't set at all:
http://example.com/test
share
...
Spring Data JPA - “No Property Found for Type” Exception
...hods defined by the interfaces and tries to automatically generate queries from the method name. While this has limitations, it is a very powerful and elegant way of defining new custom access methods with very little effort.
For example, if the managed entity has a name field (and the Java Bean sta...
What does O(log n) mean exactly?
...e the running times of some operations we might perform on the phone book, from fastest to slowest:
O(1) (in the worst case): Given the page that a business's name is on and the business name, find the phone number.
O(1) (in the average case): Given the page that a person's name is on and their na...
Change Twitter Bootstrap Tooltip content on click
... element, that sends an AJAX request on click. This element has a tooltip (from Twitter Bootstrap). I want the tooltip content to change when the AJAX request returns successfully. How can I manipulate the tooltip after initiation?
...
Canvas width and height in HTML5
...width are the logical canvas dimensions used for drawing and are different from the style.height and style.width CSS attributes. If you don't set the CSS attributes, the intrinsic size of the canvas will be used as its display size; if you do set the CSS attributes, and they differ from the canvas d...
Shell script to delete directories older than n days
... the directory; the {} part is where the find result gets substituted into from the previous part.
Alternatively, use:
find /path/to/base/dir/* -type d -ctime +10 | xargs rm -rf
Which is a bit more efficient, because it amounts to:
rm -rf dir1 dir2 dir3 ...
as opposed to:
rm -rf dir1; rm ...
How to uglify output with Browserify in Gulp?
...gives streaming vinyl file object
.pipe(buffer()) // <----- convert from streaming to buffered vinyl file object
.pipe(uglify()) // now gulp-uglify works
.pipe(gulp.dest('./build/scripts'));
});
Or, you can choose to use vinyl-transform instead which takes care of both streaming an...
How to flip windows in vim? [duplicate]
...
Ctrl-w H or type :wincmd H to go from horizontal to vertical layout.
Ctrl-w J or type :wincmd J to go from vertical to horizontal layout.
Ctrl-w r or type :wincmd r to swap the two buffers but keep the window layout the same.
Ctrl-w w or type :wincmd w to...