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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
...specified, and g (defined with java.lang.Object) would cause auto-boxing.
Starting with Scala 2.10.0, though, the user can extend AnyVal or Any, with the following semantics:
If a class extends AnyVal, no instance will be created for it on the heap under certain conditions. This means the fields ...
How to parse a string to an int in C++?
...ow you have to check for a leading zero. But wait! Hexadecimal numbers can start with a leading zero too (0x...). Sigh.
Even if you succeed in dealing with the above problems, there is still another bigger problem: what if the caller needs to distinguish between bad input (e.g. "123foo") and a numb...
Where can I learn how to write C code to speed up slow R functions? [closed]
...unfortunately, I don't have specific resources in mind to help you getting started on C++. I picked it up from Scott Meyers's books (Effective C++, More effective C++, etc ...) but these are not really what one could call introductory.
We almost exclusively use the .Call interface to call C++ code...
npm install vs. update - what's the difference?
...s module and its dependencies.
npm update express updates express module (starting with npm@2.x, it doesn't update its dependencies).
So updates are for when you already have the module and wish to get the new version.
sha...
How to apply a CSS filter to a background image
...019.
Update (01/06/2019): The Mozzilla Firefox team has announced it will start working on implementing this soon.
Update (21/05/2019): Chromium just announced backdrop-filter is available in chrome canary without enabling "Enable Experimental Web Platform Features" flag. This means backdrop-filte...
How do I get currency exchange rates via an API such as Google Finance? [closed]
Now, I did find the Google Finance API and started looking through that but I found a lot of info about portfolios, transactions, positions & other stuff I know nothing about.
...
What is the difference between ? and Object in Java generics?
... don't use a wildcard
when you both get and put.
and the wild card may start making more sense, hopefully.
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Python: split a list based on a condition?
...functional programming (Haskell), or functional style (LINQ) is raised, we start to smell Python for its age - [x for x in blah if ...] - verbose, lambda is clumsy and limited... It feels like driving the coolest car from 1995 today. Not the same as back then.
– Tomasz Gandor
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Can I use my existing git repo with openshift?
...nt
remote: Deployment id is 9037d37a
remote: Activating deployment
remote: Starting PHP 5.4 cartridge (Apache+mod_php)
remote: Application directory "/" selected as DocumentRoot
remote: -------------------------
remote: Git Post-Receive Result: success
remote: Activation status: success
remote: Depl...
What is the most pythonic way to check if an object is a number?
... the collections module for various forms of collections/containers, again starting with 2.6; and, also only in those releases, you can easily add your own abstract base classes if you need to).
Bach to 2.5 and earlier,
"can be added to 0 and is not iterable" could be a good definition in some case...