# S4 method for dfm
t(x)# S4 method for dfm
colSums(x, na.rm = FALSE, dims = 1, ...)

# S4 method for dfm
rowSums(x, na.rm = FALSE, dims = 1, ...)

# S4 method for dfm
colMeans(x, na.rm = FALSE, dims = 1, ...)

# S4 method for dfm
rowMeans(x, na.rm = FALSE, dims = 1, ...)

# S4 method for dfm,numeric
Arith(e1, e2)

# S4 method for numeric,dfm
Arith(e1, e2)

# S4 method for dfm,index,index,missing
[(x, i, j, ..., drop = TRUE)

# S4 method for dfm,index,index,logical
[(x, i, j, ..., drop = TRUE)

# S4 method for dfm,missing,missing,missing
[(x, i, j, ..., drop = TRUE)

# S4 method for dfm,missing,missing,logical
[(x, i, j, ..., drop = TRUE)

# S4 method for dfm,index,missing,missing
[(x, i, j, ..., drop = TRUE)

# S4 method for dfm,index,missing,logical
[(x, i, j, ..., drop = TRUE)

# S4 method for dfm,missing,index,missing
[(x, i, j, ..., drop = TRUE)

# S4 method for dfm,missing,index,logical
[(x, i, j, ..., drop = TRUE)