SkyWalker

SkyWalker has asked 110 questions and find answers to 45 problems.

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SkyWalker questions

How to pre-filter to a minimum number of rows per group before resampling without double-resampling?
Play 2.5.x: How to change the default evolutions directory location?
How to remove an element by name from a named vector?
How to vectorize extracting significant predictor variables?
Scalatest: should be Matchers with extra description?
Is there a dummy Scaler that does nothing to plug into a Pipeline?
How to generate a QR in SVG format?
Reduce matrix columns with CUDA
Is it possible to crop a plot when doing arrangeGrob?
In the train method what's the relationship between tuneGrid and trControl?

SkyWalker answers

How to accumulate the results of readr::read_lines_chunked?
Scala how to convert Map to varargs of tuples?
How to include condition in composite list comprehension?
Combining Composite and Strategy
Do modern c++ compilers autovectorize code for 24bit image processing?
MapReduce implementation with Akka
Combinatorial Optimization Matching in SQL
How to use Slick code generator to include database views as well?
Initialize device array in CUDA
Finding a representative mean INTERIOR point for a non-convex polygon