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Where does Scala look for implicits?
... This pattern enables the provision of common interfaces to classes which did not declare them. It can both serve as a bridge pattern -- gaining separation of concerns -- and as an adapter pattern.
The Integral class you mentioned is a classic example of type class pattern. Another example on Scala...
What is “rvalue reference for *this”?
..." of the function†:
// t.cpp
#include <iostream>
struct test{
void f() &{ std::cout << "lvalue object\n"; }
void f() &&{ std::cout << "rvalue object\n"; }
};
int main(){
test t;
t.f(); // lvalue
test().f(); // rvalue
}
Output:
$ clang++ -std=c++0x -stdlib...
Is it possible to use Java 8 for Android development?
Searching the web, it is not clear if Java 8 is supported for Android development or not.
26 Answers
...
When is the thread pool used?
...ong ago, and it was tough to come to a well defined answer because on one side you have C/C++ devs for whom the answer is obvious, and on the other you have typical web devs who haven't delved too deeply into these sorts of questions before. I'm not even sure my answer is 100% technically correct w...
What do linkers do?
...name, "overlays"). Linux has shared libraries, which is basically the same idea as DLLs (hard core Linux guys I know would tell me there are MANY BIG differences).
Hope this helps you understand!
share
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What is the correct way of using C++11's range-based for?
...container
vs. modifying them in place.
Observing the elements
Let's consider a simple example:
vector<int> v = {1, 3, 5, 7, 9};
for (auto x : v)
cout << x << ' ';
The above code prints the elements (ints) in the vector:
1 3 5 7 9
Now consider another case, in which ...
What is the best way to compute trending topics or tags?
...t is abnormally falling. So once you calculate the z-score for all the candidate trends the highest 10 z-scores will relate to the most abnormally increasing z-scores.
Please see Wikipedia for more information, about z-scores.
Code
from math import sqrt
def zscore(obs, pop):
# Size of popula...
What does Expression.Quote() do that Expression.Constant() can’t already do?
... different things is extremely confusing and bug prone.
Long answer:
Consider the following:
(int s)=>(int t)=>s+t
The outer lambda is a factory for adders that are bound to the outer lambda's parameter.
Now, suppose we wish to represent this as an expression tree that will later be com...
Rebasing a branch including all its children
...e of course welcome, but don't judge too much - it was a long time ago! I didn't even know Perl yet!)
It's meant for more static situations - you configure it by setting config parameters of the form branch.<branch>.autorebaseparent. It won't touch any branches which don't have that config pa...
passport.js RESTful auth
...e Javascript client app
RESTful web service at https://example.com/api provides server support to rich client app
Server implemented in Node and passport.js.
Server has a database (any kind) with a "users" table.
Username/password and Facebook Connect are offered as authentication options
Rich clien...