eddi

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eddi has asked 48 questions and find answers to 415 problems.

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eddi questions

boost exceptions in a shared library
R vs sed regex greediness
eval and substitute in C/C++
data.table join and j-expression unexpected behavior
fast conversion from string time to milliseconds
constructing an identifier string for each row in data
can I switch the grouping variable in a single dplyr statement?
initializer list constructor error with CRTP
how can I mutate in dplyr without losing order?
display only plotted data in the legend

eddi answers

Merge two data.tables but don't update specific columns
Full outer join with two-sided roll (LOCF)
How can we do some calculations using last row within a group in data.table in R?
Get description of groups from within a grouped data frame
Particular string split in R
Efficient Manipulation of Time Series in R Data Table Package
Reduce left-fold in R
Consolidating multiple duplicated rows of a dataframe in R
Paste multiple column values with column name
How to split a list of strings into odd and even elements in R