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How can I make setuptools install a package that's not on PyPI?
...i.e. has setup.py, etc. Is there a way to make setuptools download and install the new version instead of looking for it on PyPI and installing the old one?
...
Pass a data.frame column name to a function
...l_name,col1,col2){
df$col_name <- df$col1 + df$col2
df
}
#Call foo() like this:
foo(dat,z,x,y)
The problem here is that df$col1 doesn't evaluate the expression col1. It simply looks for a column in df literally called col1. This behavior is described in ?Extract under the secti...
What's the difference between using “let” and “var”?
...does not create a property on the global object:
var foo = "Foo"; // globally scoped
let bar = "Bar"; // globally scoped
console.log(window.foo); // Foo
console.log(window.bar); // undefined
Redeclaration
In strict mode, var will let you re-declare the same variable in the same scope while let...
What should I use Android AccountManager for?
.../ Alarm
only available from API >= 7 (this doesn't matter anymore)
Finally, if you use a SyncAdapter, seriously consider Firebase Cloud Messaging (previously Google Cloud Messaging) aka "push notifications" to have fresher updates and optimized battery usage.
...
How exactly does the “Specific Version” property of an assembly reference work in Visual Studio?
...ble about how the property works. Even SO, it appears to me, does not have all the answers, so here is my attempt at self-answering the question:
...
Should I compile release builds with debug info as “full” or “pdb-only”?
...t there is some impact on the speed and size of JIT optimized code and a small impact on code quality with /debug:full. We recommend /debug:pdbonly or no PDB for generating release code.
– Allon Guralnek
Feb 16 '12 at 9:18
...
How do I select a merge strategy for a git rebase?
...ch is "ours". May seem counterintuitive, but once you realize what is actually happening, it makes sense.
– patrikbeno
Nov 2 '15 at 15:21
...
RESTful Alternatives to DELETE Request Body
While the HTTP 1.1 spec seems to allow message bodies on DELETE requests, it seems to indicate that servers should ignore it since there are no defined semantics for it.
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Is R's apply family more than syntactic sugar?
...tem elapsed
7.52 0.00 7.58
Edit 2:
Regarding the usage of parallel packages for R (e.g. rpvm, rmpi, snow), these do generally provide apply family functions (even the foreach package is essentially equivalent, despite the name). Here's a simple example of the sapply function in snow:
...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...
Generically, a covariant type parameter is one which is allowed to vary down as the class is subtyped (alternatively, vary with subtyping, hence the "co-" prefix). More concretely:
trait List[+A]
List[Int] is a subtype of List[A...