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There are two different methods for accessing the element of a list or data frame- [ ] and [[ ]] , what is the difference between them? When should I use one over the other and what’s the difference between them? Select the correct answer from above options questions and answers, questions pdf, question bank, questions and answers pdf, mcq on pdf, questions and solutions, mcq Test , Interview questions, Questions for Interview, MCQ (Multiple Choice Questions),Core Questions, Core Hadoop MCQ,core interview questions for experienced

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The main difference between these two are, mainly Double brackets accesses a list element whereas a single element gives back a list with a single element.

E.x.

lst <- list('one','two','three')

q <- lst[1]

class(q)

## returns "list"

q <- lst[[1]]

class(q)

## returns "character"

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