Conditionals and Control Flow Flashcards
1
Q
How do conditional operators like < and > work on characters and logicals?
A
Characters are compared alphabetically, while logicals are compared by replacing TRUE with 1 and FALSE with 0.
2
Q
How do you write the AND, OR, and NOT operators in R?
A
&, |, and !
3
Q
What is the difference between & and &&, or | and ||?
A
When used on a vector, && and || only examine the first element of the given vectors.
4
Q
What is the recipe for an if, else-if, and else statement in R?
A
if (cond) {
expression
} else if (cond2) {
expression2
} else {
expression3
5
Q
What denotes the MODULUS operation in R?
A
%%
6
Q
What function counts the number of characters in a string?
A
nchar()
Ex: nchar(my_string)
7
Q
Which function returns the length of the inputted vector?
A
length()
Ex: length(my_vector)
