zeallot - zeallot 0.2.0 (drifting by)

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)

```R # 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)

R 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)

R .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)

R c(x, ..y) %<-% list(1)

• Trailing anonymous collectors and value skips no longer raise errors.

```R c(x, ..) %<-% list(1)

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

Minor improvements

• Error messages have been simplified.

• R versions >= 3.2 are formally supported.

- R
Published by nteetor 9 months ago

zeallot - winning duende

summary

• Bumped to stable version.
• Removed outdate language in the unpacking assignment vignette. (#36)
• Destructuring objects with multiple classes will no longer raise a warning. (#35)

- R
Published by nteetor over 7 years ago

zeallot - left-hand side of darkness

summary

• 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. Thank you to @rafaqz for the suggestion. (#32)

- R
Published by nteetor over 8 years ago

zeallot - to the right, to the right

summary

• 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() name structure syntax.

• 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. This is particularly useful as the left operator did not work well with %>% chains.

• = may be used to specify the default value of a variable. A default value is used when there are an insufficient number of values.

- R
Published by nteetor over 8 years ago

zeallot - simpler, lighter, stronger

summary

• The bracket and colon syntax has been deprecated in favor of a lighter syntax. Documentation has been updated accordingly, see docs for more information about the new syntax. Using the old syntax will raise a warning and will be removed in future versions of zeallot. Thank you to @hadley for the suggestion. (#21)
• %<-% can now be used for regular assignment. (#17)
• ... can now be used to skip multiple values without assigning those values and is now recommended over the previously suggested ..... (#18)
• massign() is no longer exported.

syntax

• c(a, b) %<-% c(0, 1)
• c(a, b) %<-% list(0, 1)
• c(a, c(b, d)) %<-% list(0, list(1, 2))
• c(a, c(b, d)) %<-% data.frame(x = 1:5, y = 6:10, z = 11:15)

bug fixes

• Numerics on left-hand side are no longer unintentionally quoted and will now raise an error. (#20)
• Language objects on left-hand side are no longer treated as symbols and will now raise an error. (#20)

- R
Published by nteetor over 8 years ago

zeallot - vector to shining vector

summary

• documentation and examples now consistently put space around colons, e.g. a : b instead of a: b
• additional minor updates to the README and man pages

bug fixes

• when unpacking a vector of values collector variables now collect values as a vector, previously values were collected as a list (#14)

- R
Published by nteetor almost 9 years ago

zeallot - initial CRAN release

summary

• all functionality is the same as v0.0.1
• cleaned up README.md, NEWS.md, fixed .Rbuildignore
• submitted to CRAN

- R
Published by nteetor about 9 years ago

zeallot - initial release

summary

• not on CRAN
• %<-% operator
• name syntax using : and {

syntax

• a: b %<-% c(0, 1)
• {a: b} %<-% list(0, 1)
• {a: {b: c}} %<-% list(0, list(1, 2))
• {a: b: c} %<-% data.frame(x = 1:5, y = 6:10, z = 11:15)

vignettes

• introduction to unpacking assignment

- R
Published by nteetor about 9 years ago