as_vector() collapses a list of vectors into one vector. It
checks that the type of each vector is consistent with
.type. If the list can not be simplified, it throws an error.
simplify will simplify a vector if possible;
simplify to every element of a list.
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A list of vectors
A vector mold or a string describing the type of the
input vectors. The latter can be any of the types returned by
.type can be a vector mold specifying both the type and the
length of the vectors to be concatenated, such as
integer(4). Alternatively, it can be a string describing
the type, one of: "logical", "integer", "double", "complex",
"character" or "raw".
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# Supply the type either with a string: as.list(letters) %>% as_vector("character") # Or with a vector mold: as.list(letters) %>% as_vector(character(1)) # Vector molds are more flexible because they also specify the # length of the concatenated vectors: list(1:2, 3:4, 5:6) %>% as_vector(integer(2)) # Note that unlike vapply(), as_vector() never adds dimension # attributes. So when you specify a vector mold of size > 1, you # always get a vector and not a matrix
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