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What is a switch operator in R?
What is a switch operator in R?
This recipe explains what is a switch operator in R
Recipe Objective
switch() function is used to test an expression against all the elements of the list. The value calculated by the expression when matched with an item in the list, then the corresponding item is returned.
Syntax:
switch(expression, case1, case2, case3...)
where case1, case2 ... are the items in the list.
Case 1: Where Expression gives a numeric value
Here, numeric value matches with the item in the list and returns the corresponding list item
switch(3, "Raj", 1, "Neil", 2)
'Neil'
Case 2: Where Expression gives a string value
In this case, string value matches with the item and returns the Item's value
switch("Raj", "Raj" = 1, "Neil" = 2)
1
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