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How do you rotate a two dimensional array?
...eed this information in our function to rotate a matrix, so let’s add it now:
def rotate(matrix):
size = len(matrix)
# Rotatable layers only.
layer_count = size / 2
Now we know what layers are and how to determine the number of layers that actually need rotating, how do we isolate a...
Remove last item from array
...e(-1): </b>
<div id="div2"></div>
Explanation:-
Now the basic syntax of Array.prototype.slice() or in short slice() method is:
arr.slice([begin[, end]])
Here,
the begin parameter is zero-based index at which extraction from an array starts. So, lets say based on above...
Rspec doesn't see my model Class. uninitialized constant error
... versions of RSpec move some stuff out of the spec/spec_helper.rb file, so now you also get a spec/rails_helper.rb file. If you run rails generate rspec:install, this is what it produces (rspec-rails 3.0.1, rails 4.1.1). Turns out the rails_helper.rb file contains some similar code to yours and shou...
pip issue installing almost any library
...ll to get most of what I needed done, which has generally worked. However, now I'm trying to download the nltk library, and neither is getting the job done.
...
Remote debugging with Android emulator
...k configuration above, open Putty, go to Connection > SSH > Tunnels. Now add an entry with Source-port: 5556 and Destination: localhost:5554. Repeat the same with Source-port: 5557 and Destination: localhost:5555. Cheers!
– gsbabil
Jul 30 '13 at 16:54
...
Google Docs/Drive - number the headings
...
Update: now available in github.
Update 2: now handling empty headings and blank lines thanks to 2 pull requests on github.
Update 3: github and code below fixed to handle new Docs HEADING identification.
I modified the script m...
Produce a random number in a range using C#
...
Something like:
var rnd = new Random(DateTime.Now.Millisecond);
int ticks = rnd.Next(0, 3000);
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How to get the current date/time in Java [duplicate]
...slow when used the first time.)
in Java 8, calling java.time.LocalDateTime.now() and java.time.ZonedDateTime.now() will give you representations1 for the current date / time.
Prior to Java 8, most people who know about these things recommended Joda-time as having (by far) the best Java APIs for...
What are detached, persistent and transient objects in hibernate?
...ng it with a Session:
Long id = (Long) session.save(person);
// person is now in a persistent state
Now, if we close the Hibernate Session, the persistent instance will become a detached instance: it isn't attached to a Session anymore (but can still be modified and reattached to a new Session la...
Why is January month 0 in Java Calendar?
...ng what's wrong with it would take a very long time (and I'm sure I don't know half of the problems). Admittedly working with dates and times is tricky, but aaargh anyway.
Do yourself a favour and use Joda Time instead, or possibly JSR-310.
EDIT: As for the reasons why - as noted in other answers,...