Extract or replace parts of an object

Extract or replace parts of an object

# S3 method for caracas_symbol
[(x, i, j, ..., drop = TRUE)

Arguments

x

A caracas_symbol.

i

row indices specifying elements to extract or replace

j

column indices specifying elements to extract or replace

...

Not used

drop

Simplify dimensions of resulting object

Examples

if (has_sympy()) {
  A <- matrix(c("a", 0, 0, 0, "a", "a", "a", 0, 0), 3, 3)
  B <- as_sym(A)
  B[1:2, ]
  B[, 2]
  B[2, , drop = FALSE]
}
#> c: [0  a  0]