Kevin Ushey

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Kevin Ushey has asked 13 questions and find answers to 128 problems.

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Kevin Ushey questions

How do I substitute symbols in a language object?
Slice a string at consecutive indices with R / Rcpp?
How does Roxygen to handle infix binary operators (eg. %in%)?
How can I control the x position of boxplots in ggplot2?
Why is sapply relatively slow when querying attributes on variables in a data.frame?
Produce two plots from same chunk / statement in knitr
How should I count the number of unique rows in a 'binary' matrix?
Strange mixing of system + homebrew Python with LLDB
How do I prevent "r 'library' or 'require' calls not declared" warnings when developing a package?

Kevin Ushey answers

'curl' error is not allowing packages installation in RStudio under renv
Iterate over S4 object slots Rcpp
'unlockEnvironment' implemented via 'Rcpp' instead of 'inline'
Risk in deleting suspended session data?
Submitting R package that use OpenMP
Extract data elements found in a single column
Error when installing "devtools" package for R in Ubuntu
Fast vectorized function to check if a value is in an interval
Rcpp map/dictionary/list
Adaptive moving average - top performance in R