lst

0th

Percentile

Build a list

lst() is similar to list(), but like tibble(), it evaluates its arguments lazily and in order, and automatically adds names.

tibble() is a trimmed down version of data.frame() that:

  • Never coerces inputs (i.e. strings stay as strings!).
  • Never adds row.names.
  • Never munges column names.
  • Only recycles length 1 inputs.
  • Evaluates its arguments lazily and in order.
  • Adds tbl_df class to output.
  • Automatically adds column names.

Usage
lst(...)

lst_(xs)

tibble(...)

tibble_(xs)

Arguments
...
A set of name-value pairs. Arguments are evaluated sequentially, so you can refer to previously created variables.
xs
A list of unevaluated expressions created with ~, quote(), or (deprecated) lazyeval::lazy().
See Also

as_tibble() to turn an existing list into a data frame.

Aliases
  • lst
  • lst_
  • tibble
  • tibble_
  • data_frame
  • data_frame_
Examples
lst(n = 5, x = runif(n))

# You can splice-unquote a list of quotes and formulas
lst(!!! list(n = rlang::quo(2 + 3), y = quote(runif(n))))

a <- 1:5
tibble(a, b = a * 2)
tibble(a, b = a * 2, c = 1)
tibble(x = runif(10), y = x * 2)

lst(n = 5, x = runif(n))

# tibble never coerces its inputs
str(tibble(letters))
str(tibble(x = list(diag(1), diag(2))))

# or munges column names
tibble(`a + b` = 1:5)

# You can splice-unquote a list of quotes and formulas
tibble(!!! list(x = rlang::quo(1:10), y = quote(x * 2)))

# data frames can only contain 1d atomic vectors and lists
# and can not contain POSIXlt
## Not run: ------------------------------------
# tibble(x = tibble(1, 2, 3))
# tibble(y = strptime("2000/01/01", "%x"))
## ---------------------------------------------
Documentation reproduced from package tibble, version 1.3.3, License: MIT + file LICENSE

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