Changelog • zeallot

zeallot 0.2.0

CRAN release: 2025-05-27

Breaking changes

The collector syntax has changed. The previous syntax ... was incompatible with R CMD check and would raise the error “… may be used in an incorrect context”. The new syntax .. (double dots instead of triple) avoids this error. (#62)
```
# new
c(x, ..) %<-% list(1, 2, 3)

# old
c(x, ...) %<-% list(1, 2, 3)
```
The destructure methods for the Date, character, and complex classes have been removed.

New features

Values may now be assigned by name. The new syntax allows assigning a value to a variable by name instead of position. (#47)
```
c(disp=, gear=) %<-% mtcars
```
For package developers, the new function zeallous() will prevent R CMD check from raising visible binding errors for variables assigned using %<-%. Call the function from a package’s .onLoad function. (#57)
```
.onLoad <- function(libname, pkgname) {
  zeallous()
}
```

Major improvements

Collector variables now default to an empty list instead of raising an error when there are no values to collect. (#56)
```
c(x, ..y) %<-% list(1)
```
Trailing anonymous collectors and value skips no longer raise errors.
```
c(x, ..) %<-% list(1)

c(y, .) %<-% list(1)
```

Minor improvements

Error messages have been simplified.
R versions >= 3.2 are formally supported.

zeallot 0.1.0

CRAN release: 2018-01-28

Major Improvements

Bumped to stable version.

Minor Improvements

Removed outdate language in the unpacking assignment vignette. (#36)

Bug Fixes

Destructuring objects with multiple classes will no longer raise a warning. (#35)

zeallot 0.0.6.1

Bug Fixes

Resolved problem where collector variables would not be assigned the correct default value. (#34)

zeallot 0.0.6

CRAN release: 2017-09-28

Major Improvements

The left-hand side may now contain calls to [[, [, and $ allowing assignment of parts of objects. The parent object must already exist, otherwise an error is raised. (@rafaqz, #32)

zeallot 0.0.5

CRAN release: 2017-08-25

Major Changes

The bracket and colon syntax has been completely removed, users will now see an “unexpected call {” error message when attempting to use the old syntax. Please use the c() syntax for the name structure.

Major Improvements

A %->% operator has been added. The right operator performs the same operation as %<-% with the name structure on the right-hand side and the values to assign on the left-hand side.
= may be used to specify the default value of a variable. A default value is used when there are an insufficient number of values.

zeallot 0.0.4

CRAN release: 2017-07-28

Major Changes

The bracket and colon syntax has been deprecated in favor of a lighter syntax which uses calls to c(). Documentation and vignettes has been updated accordingly. Using the old syntax now raises a warning and will be removed in future versions of zeallot. (@hadley, #21)

Minor Improvements

%<-% can now be used for regular assignment. (@hadley, #17)
... can now be used to skip multiple values without assigning those values and is recommended over the previously suggested ..... (@hadley, #18)

Miscellaneous Changes

massign() is no longer exported.

Bug Fixes

Numerics on left-hand side are no longer unintentionally quoted, thus no longer treated as valid variable names, and will now raise an error. (@hadley, #20)
Language objects on left-hand side are no longer treated as symbols and will now raise an error. (@hadley, #20)

zeallot 0.0.3

CRAN release: 2017-02-27

see 0.0.2.1 notes for additional updates

Minor Improvements

Examples now consistently put spaces around colons separating left-hand side variables, e.g. a : b instead of a: b.

Bug Fixes

When unpacking an atomic vector, a collector variable will now collect values as a vector. Previously, values were collected as a list (#14).

zeallot 0.0.2.1

Not on CRAN, changes will appear under version 0.0.3
Added missing URL and BugReports fields to DESCRIPTION
Fixed broken badges in README

zeallot 0.0.2

CRAN release: 2017-01-27

Initial CRAN release
zeallot 0.0.1 may be installed from GitHub