Deleting Components of a List
To delete components of a R list, first of all, we need to access those components and then insert a negative sign before those components. It indicates that we had to delete that component.
Example:
R
# R program to access # components of a list# Creating a list by naming all its componentsempId = c(1, 2, 3, 4)empName = c("Debi", "Sandeep", "Subham", "Shiba")numberOfEmp = 4empList = list( "ID" = empId, "Names" = empName, "Total Staff" = numberOfEmp)cat("Before deletion the list is\n")print(empList)# Deleting a top level componentscat("After Deleting Total staff components\n")print(empList[-3])# Deleting a inner level componentscat("After Deleting sandeep from name\n")print(empList[[2]][-2]) |
Output
Before deletion the list is $ID [1] 1 2 3 4 $Names [1] "Debi" "Sandeep" "Subham" "Shiba" $`Total Staff` [1] 4 After Deleting Total staff components $ID [1] 1 2 3 4 $Names [1] "Debi" "Sand...
R – Lists
A list in R programming is a generic object consisting of an ordered collection of objects. Lists are one-dimensional, heterogeneous data structures.
The list can be a list of vectors, a list of matrices, a list of characters, a list of functions, and so on.
A list is a vector but with heterogeneous data elements. A list in R is created with the use of the list() function.
R allows accessing elements of an R list with the use of the index value. In R, the indexing of a list starts with 1 instead of 0.
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