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Ruby custom error classes: inheritance of the message attribute
... you don't have to pass it to the constructor:
class MyCustomError < StandardError
attr_reader :object
def initialize(object)
@object = object
end
end
begin
raise MyCustomError.new("an object"), "a message"
rescue MyCustomError => e
puts e.message # => "a message"
puts e....
Determining the current foreground application from a background task or service
...es() method as this returns all sorts of system rubbish from my experience and you'll get multiple results which have RunningAppProcessInfo.IMPORTANCE_FOREGROUND. Use getRunningTasks() instead
This is the code I use in my service to identify the current foreground application, its really easy:
Ac...
Why can't radio buttons be “readonly”?
... Disabled doesn't work, because it doesn't submit the value (or does it?), and it grays out the radio button. Read-only is really what I'm looking for, but for some mysterious reason it doesn't work.
...
git shallow clone (clone --depth) misses remote branches
...e branch (at your requested depth).
Unfortunately both options (--depth and --single-branch) have been faulty in the past and the use of shallow clones implicits unresolved problems (as you can read in the link I posted above), which is caused by the given history-rewrite. This leads in overall t...
What REST PUT/POST/DELETE calls should return by a convention?
...n RFC7231 describes exactly what behaviour is expected from GET, PUT, POST and DELETE.
Update (Jul 3 '14):
The HTTP spec intentionally does not define what is returned from POST or DELETE. The spec only defines what needs to be defined. The rest is left up to the implementer to choose.
...
Most simple but complete CMake example
... by how CMake works. Every time I think that I am getting closer to understand how CMake is meant to be written, it vanishes in the next example I read. All I want to know is, how should I structure my project, so that my CMake requires the least amount of maintainance in the future. For example, I ...
How to find if a given key exists in a C++ std::map
I'm trying to check if a given key is in a map and somewhat can't do it:
14 Answers
14...
How do you use the ellipsis slicing syntax in Python?
...it depends entirely on you, or someone else, having written code to understand it.
Numpy uses it, as stated in the documentation. Some examples here.
In your own class, you'd use it like this:
>>> class TestEllipsis(object):
... def __getitem__(self, item):
... if item is Ell...
efficient circular buffer?
...e nice batteries included way. Operations for the circular buffer are O(1) and as you say the extra overhead is in C, so should still be quite fast
– John La Rooy
Nov 11 '10 at 9:38
...
Java EE web development, where do I start and what skills do I need? [closed]
... that you're already familiar with client side technologies like HTML, CSS and JS, so I won't go in detail with that. I also assume that you're already familiar with basic Java. Follow Oracle's The Java Tutorials and if possible, go get a OCP book or course as well.
Then you can start with JSP/Servl...