c_Rd: Concatenate Rd objects or pieces

Description Usage Arguments Details Value Author(s) Examples

View source: R/elements.R

Description

Concatenates Rd objects or pieces

Usage

1

Arguments

...

objects to be concatenated, Rd objects or character strings, see ‘Details’.

Details

The arguments may be a mixture of lists and character strings. The lists are typically "Rd" objects or pieces. The character strings may also be elements of "Rd" objects carrying "Rd_tag" attributes. The "Rd_tag" attribute of character strings for which it is missing is set to "TEXT". Finally, each character element of ... is enclosed in list.

Eventually all arguments become lists and they are concatenated using c(). If any of the arguments is of class "Rd", the class of the result is set to "Rd". Otherwise, the "Rd_tag" of the result is set to the first (if any) non-null "Rd_tag" in the arguments.

Value

An Rd object or a list whose attribute "Rd_tag" is set as descibed in ‘Details’

Author(s)

Georgi N. Boshnakov

Examples

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a1 <- char2Rdpiece("Dummyname", "name")
a2 <- char2Rdpiece("Dummyallias1", "alias")
a3 <- char2Rdpiece("Dummy title", "title")
a4 <- char2Rdpiece("Dummy description", "description")

# The following are equivalent
# TODO: replace Rdo_empty() below with a function from Rdpack
#       and uncomment
# b1 <- c_Rd(Rdo_empty(), list(a1), list(a2), list(a3), list(a4))
# c1 <- c_Rd(Rdo_empty(), list(a1, a2, a3, a4))
# d1 <- c_Rd(Rdo_empty(), list(a1, a2), list(a3, a4))
# identical(c1,b1)
# identical(c1,d1)
# Rdo_show(b1)

# insert a newline
# TODO: replace Rdo_empty() below with a function from Rdpack
#       and uncomment
# d1n <- c_Rd(Rdo_empty(), list(a1,a2), Rdo_newline(), list(a3,a4))
# str(d1n)

# When most of the arguments are character strings
# the function 'list_Rd' may be more convenient.
u1 <- list_Rd(name = "Dummyname", alias = "Dummyallias1",
              title = "Dummy title", description = "Dummy description",
              Rd_class=TRUE )

Rdpack documentation built on Oct. 2, 2017, 5:03 p.m.