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How to quickly and conveniently create a one element arraylist [duplicate]
...ariable size List
If it needs vary in size you can construct an ArrayList and the fixed-sizeList like
return new ArrayList<String>(Arrays.asList(s));
and (in Java 7+) you can use the diamond operator <> to make it
return new ArrayList<>(Arrays.asList(s));
Single Element Lis...
Getting the IP address of the current machine using Java
... the destination for Send/Recv, discards all packets from other addresses, and - which is what we use - transfers the socket into "connected" state, settings its appropriate fields. This includes checking the existence of the route to the destination according to the system's routing table and setti...
How to get ID of the last updated row in MySQL?
...T 1;
SELECT @update_id;
EDIT by aefxx
This technique can be further expanded to retrieve the ID of every row affected by an update statement:
SET @uids := null;
UPDATE footable
SET foo = 'bar'
WHERE fooid > 5
AND ( SELECT @uids := CONCAT_WS(',', fooid, @uids) );
SELECT @uids;
This w...
How do I restore a dump file from mysqldump?
...many databases, the use statements are already in there.
To run these commands, open up a command prompt (in Windows) and cd to the directory where the mysql.exe executable is (you may have to look around a bit for it, it'll depend on how you installed mysql, i.e. standalone or as part of a package...
Why doesn't a python dict.update() return the object?
...
Python's mostly implementing a pragmatically tinged flavor of command-query separation: mutators return None (with pragmatically induced exceptions such as pop;-) so they can't possibly be confused with accessors (and in the same vein, assignment is not an expression, the statement-expressi...
Scope of sessionStorage and localStorage
I read some documentation on sessionStorage and localStorage, but I don't understand what the scope is: the domain, a specific page?
...
Navigation bar show/hide
...pp with a navigation bar consisting of 2 bar buttons. I would like to hide and show this navigation bar when a user double taps the screen.
...
What's the difference between RouteLink and ActionLink in ASP.NET MVC?
...
Action and Routes don't have to have a 1:1 relationship.
ActionLink will generate the URL to get to an action using the first matching route by action name.
RouteLink will generate a URL to a specific route determined either by na...
The $.param( ) inverse function in JavaScript / jQuery
...
You should use jQuery BBQ's deparam function. It's well-tested and documented.
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How to make an immutable object in Python?
...butes can be accessed via [0] etc., but at least it's considerably shorter and provides the additional advantage of being compatible with pickle and copy.
namedtuple creates a type similar to what I described in this answer, i.e. derived from tuple and using __slots__. It is available in Python 2....