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Regex group capture in R with multiple capture-groups
...It returns a character matrix with one column for each group in the match (and one for the whole match):
> s = c("(sometext :: 0.1231313213)", "(moretext :: 0.111222)")
> str_match(s, "\\((.*?) :: (0\\.[0-9]+)\\)")
[,1] [,2] [,3]
[1,] "(sometext ::...
Simulator or Emulator? What is the difference?
While I understand what simulation and emulation mean in general, I almost always get confused about them. Assume that I create a piece of software that mimics existing hardware/software, what should I call it? A simulator or an emulator?
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Queue.Queue vs. collections.deque
I need a queue which multiple threads can put stuff into, and multiple threads may read from.
7 Answers
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Amazon products API - Looking for basic overview and information
... Product Advertising API (PA). It allows you programmatic access to search and retrieve product information from Amazon's catalog. If you're having trouble finding information on the API, that's because the web service has undergone two name changes in recent history: it was also known as ECS and AA...
SQL parser library for Java [closed]
... queries? I looked at the grammar of some PL/SQL Parsers as well as Lexers and Parsers but was unable to fathom how to use one. Would appreciate any links.
– Abhishek
Jan 29 '12 at 13:45
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Can I use __init__.py to define global variables?
...package. But I don't know how to do this. Suppose I have a few subpackages and each with several modules. How can I access that variable from these modules?
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What is a callback function?
...allback function is a function which is:
accessible by another function, and
is invoked after the first function if that first function completes
A nice way of imagining how a callback function works is that it is a function that is "called at the back" of the function it is passed into.
Maybe ...
how to implement regions/code collapse in javascript
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Blog entry here explains it and this MSDN question.
You have to use Visual Studio 2003/2005/2008 Macros.
Copy + Paste from Blog entry for fidelity sake:
Open Macro Explorer
Create a New Macro
Name it OutlineRegions
Click Edit macro and paste the fo...
What is the concept of erasure in generics in Java?
...ava.lang.Object wherever you talk about T (or some other type parameter) - and there's some metadata to tell the compiler that it really is a generic type.
When you compile some code against a generic type or method, the compiler works out what you really mean (i.e. what the type argument for T is)...
test if event handler is bound to an element in jQuery [duplicate]
Is it possible to determine whether an element has a click handler, or a change handler, or any kind of event handler bound to it using jQuery?
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