New function recycle to help recycle R objects to a common size.
The set functions that update by reference are now ALTREP aware and take a copy when the input is an ALTREP object.
New function lag2_ as a generalised solution for complex lags. It supports dynamic lag vectors, lags using an order vector, and custom run lengths. It doesn’t support updating by reference or long vectors.
New function lag_ for very fast lags and leads on vectors and data frames. It includes a set argument allowing users to create a lagged vector by reference without copies.
set_round has been amended to improve floating point accuracy.
New ‘set’ Math operations inspired by ‘data.table’ and ‘collapse’ that transform data by reference.
Fixed an inconsistency of when sequence_() would error when supplied with a zero-length size argument.
Fixed a protection stack imbalance in count_val(x) when x is NULL.
sset has been optimised for wide data frames with many variables. It is also faster when applied to a data frame with dates, date-times and factors.
In sset, when i is a logical vector it must match the length of x.
sset can now handle ‘ALTREP’ compact real sequences as well.
sset is now parallelised when i is an ‘ALTREP’ compact integer sequence, e.g. sset(x, 1:10).
sset now has an internal range-based subset method for ‘ALTREP’ integer sequences made using : for example.
New function count_val as a cheaper alternative to e.g. sum(x == val).
Negative indexing in sset has been improved. It is also now partially parallelised.
Setting recursive to false should now be faster.
‘overview’ objects gain an additional list element “print_digits” which is passed to the print method in order to correctly round the summary statistics without affecting the ‘cheapr.digits’ option globally.
factor_ and na_rm now handle data frames.
A bug in sset.data.table that caused further set calculations to produce warnings has been fixed.
is_na.POSIXlt and sset.POSIXlt have been rewritten to handle unbalanced ‘POSIXlt’ objects.
New function sset to consistently subset data frame rows and vectors in general.
overview now always returns an object of class “overview”. It also returns the number of observations instead of rows so that it makes sense for vector summaries as well as data frame summaries.
sequence_ has been optimised and rewritten in C++. It now only checks for integer overflow when both from and by are integer vectors.
The internal function list_as_df has been rewritten in C++.
New function overview as a cheaper alternative to summary.
All of the NA handling functions now fall back to using is.na if an appropriate method cannot be found.
More support has been added for all objects with an is.na method.
is_na has been added as an S3 generic function which is parallelised and internally falls back on is.na if there are no suitable methods.
Additional list utility functions have been added.
Limited support for vctrs_rcrd objects has been added again.
num_na and similar functions no longer treat empty data frame rows as single observations but instead return the total number of NA values in the data frame.
Fixed a bug in row_na_counts and col_na_counts that would cause the session to crash when a column variable was a list.
For the time being, vctrs ‘vctrs_rcrd’ objects are no longer supported though this support may be re-added in the future.