Named lists
Knowing how forgetful you are, you decide it would be important to add names to your list so you can remember what each element is describing. There are two ways to do this!
You could name the elements as you create the list with the form name = value:
my_list <- list(my_words = words, my_numbers = numbers)
Or, if the list was already created, you could use names():
my_list <- list(words, numbers)
names(my_list) <- c("my_words", "my_numbers")
Both would result in:
my_list
$my_words
[1] "I <3 R"
$my_numbers
[1] 42 24
Questo esercizio fa parte del corso
Introduction to R for Finance
Istruzioni dell'esercizio
- The
portfoliolist is available to work with. - Use
names()to add the following names to your list:"portfolio_name","apple","ibm","correlation", in that order. - Print
portfolioto see your newly named list.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
# Add names to your portfolio
# Print portfolio