Comments (5)
What type are you trying to resolve? We haven't seen that internally (and Flavian has been doing some matrices of Maps actually).
We are limited somewhat by the compiler, but generally we have been able to work around it. Please post the full compiler error.
from algebird.
Without seeing the code, I suspect the solution here is to have the templated function in question take an implicit Ring parameter - so you have
def myFn[T:Ring](...)
instead of just
def myFn[T](...)
That way the implicit gets resolved at the callsite where the concrete type of T is known, vs. in the templated function. (Of course this may need to happen for any number of levels up the call chain until you get to the point where T is not generic... implicits "infect" code very similarly to checked exceptions).
from algebird.
Sorry for my reticence. I'll try this. The thing in question was basically like:
trait SomeMatrixOps[T, ValT] {
def foo(p : Pipe, q : Pipe) = {
val m1 = p.toMatrix[T,T,ValT](...)
val m2 = q.toMatrix[T,T,ValT](...)
m1 * m2
}
}
from algebird.
Avi is right. I think you need:
trait SomeMatrixOps[T, ValT] {
implicit def ring: Ring[ValT]
def foo(p : Pipe, q : Pipe) = {
val m1 = p.toMatrix[T,T,ValT](...)
val m2 = q.toMatrix[T,T,ValT](...)
m1 * m2
}
}
And then when you implement:
class MyMatrixOps[T,ValT:Ring] {
override def ring = implicitly[Ring[ValT]]
}
I think that works.
from algebird.
Great thanks. I'm still trying to figure out what the compiler actually does when you get generics and implicits together like this...
from algebird.
Related Issues (20)
- Release cadance of algebrid, next planned release? HOT 5
- Scala 3 support? HOT 7
- microsite is failing CI because it depends on a very old ruby
- Release v.0.13.10 HOT 1
- SketchMap is not commutative
- `MinHasher32` tests are flaky
- Idea: BloomFilterAggregator can directly rely on a BitSet instead of a BFMonoid
- use fast immutable bitset for better bloom filter HOT 6
- The GeneratedTupleAggregator is not recognized HOT 2
- Add combinators on Semigroup, Monoid, Aggregator to reverse order. HOT 1
- flakey test: downsiding HLL to 4 bits HOT 1
- investigate flaky test on AdaptiveVector
- Latest version published with `-optimize` HOT 1
- configure mergify.io HOT 1
- H
- Investigate flaky `com.twitter.algebird.CollectionSpecification` test HOT 8
- Possible buffer overflow for lengths over 127. Why are you doing .toByte in order to represent an integer size of 4 bytes? For example item length of 184 will result in -72 and thus in NegativeArraySize Exception when deserializing in fromBytes : 94. HOT 1
- Possible buffer overflow for lengths over 127. HOT 4
- SparseVector monoid flake
- New release? HOT 4
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from algebird.