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Find first element by predicate
...e stream. It's an intermediate operation, which returns a lazy stream (actually all intermediate operations return a lazy stream). To convince you, you can simply do the following test:
List<Integer> list = Arrays.asList(1, 10, 3, 7, 5);
int a = list.stream()
.peek(num -> Syste...
Explain the “setUp” and “tearDown” Python methods used in test cases
...nd tearDown methods while writing test cases apart from that setUp is called immediately before calling the test method and tearDown is called immediately after it has been called?
...
NodeJS - Error installing with NPM
I am installing a certain NodeJS script - Caress . But i am not unable to. I am using Windows 8.1, can anyone tell me what is the problem i am facing, and why is this installation not working. There seems to be a problem with the buffertools dependency, thats far as i can think. Dont know how maybe...
Implement Stack using Two Queues
...d queue2
Version B (efficient pop):
push:
enqueue in queue2
enqueue all items of queue1 in queue2, then switch the names of queue1 and queue2
pop:
deqeue from queue1
share
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improve this...
Filter by process/PID in Wireshark
...
I don't see how. The PID doesn't make it onto the wire (generally speaking), plus Wireshark allows you to look at what's on the wire - potentially all machines which are communicating over the wire. Process IDs aren't unique across different machines, anyway.
...
Rails create or update magic?
I have a class called CachedObject that stores generic serialised objects indexed by key. I want this class to implement a create_or_update method. If an object is found it will update it, otherwise it will create a new one.
...
How do I control how Emacs makes backup files?
...tory as the file you're editing,
but that is easy to change. You can make all backup files go
into a directory by putting something like the following in your
.emacs.
(setq backup-directory-alist `(("." . "~/.saves")))
There are a number of arcane details associated with how Emacs
might create y...
JBoss vs Tomcat again [closed]
...ion with 3rd party directories
EAR file instead of "only" WAR file support
all the other "great" Java EE features I can't remember :-)
In my opinion Tomcat is a very good fit if it comes to web centric, user facing applications. If backend integration comes into play, a Java EE application server ...
Get started with Latex on Linux [closed]
...
First you'll need to Install it:
If you're using a distro which packages LaTeX (almost all will do) then look for texlive or tetex. TeX Live is the newer of the two, and is replacing tetex on most distributions now.
If you're using Debian or Ubunt...
Why does the lock object have to be static?
...ons. And in the latter, there are better ways of doing it anyway.
So it really depends: how is Locker used in your scenario? Is it protecting something that is itself static? If so, the lock should be static. If it is protecting something that is instance based, then IMO the lock should also be ins...