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Recommend direct usage of data.frame() to create a data.frame from a list

Source: R/list2df_linter.R
list2df_linter.Rd

list2DF() is the preferred way to turn a list of columns into a data.frame. Note that it doesn't support recycling; if that's required, use data.frame().

Usage

list2df_linter()

See also

linters for a complete list of linters available in lintr.

Tags

efficiency, readability

Examples

# will produce lints
lint(
  text = "do.call(cbind.data.frame, x)",
  linters = list2df_linter()
)
#> <text>:1:1: warning: [list2df_linter] Use `list2DF(lst)` instead of `do.call(cbind.data.frame, lst)`. If recycling is required, use `data.frame(lst)`.
#> do.call(cbind.data.frame, x)
#> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

lint(
  text = "do.call('cbind.data.frame', x)",
  linters = list2df_linter()
)
#> <text>:1:1: warning: [list2df_linter] Use `list2DF(lst)` instead of `do.call(cbind.data.frame, lst)`. If recycling is required, use `data.frame(lst)`.
#> do.call('cbind.data.frame', x)
#> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

lint(
  text = "do.call(cbind.data.frame, list(a = 1, b = 1:10))",
  linters = list2df_linter()
)
#> <text>:1:1: warning: [list2df_linter] Use `list2DF(lst)` instead of `do.call(cbind.data.frame, lst)`. If recycling is required, use `data.frame(lst)`.
#> do.call(cbind.data.frame, list(a = 1, b = 1:10))
#> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# okay
lint(
  text = "list2df(x)",
  linters = list2df_linter()
)
#> ℹ No lints found.

lint(
  text = "data.frame(list(a = 1, b = 1:10))",
  linters = list2df_linter()
)
#> ℹ No lints found.