isTRUE()
| The function isTRUE() takes one argument. If that argument evaluates to TRUE, the function will return TRUE. Otherwise, the
| function will return FALSE. Try using this function by typing: isTRUE(6 > 4)
indentical()
| The function identical() will return TRUE if the two R objects passed to it as arguments are identical. Try out the
| identical() function by typing: identical('twins', 'twins')
xor()
The xor() function stands for exclusive OR. If
| one argument evaluates to TRUE and one argument evaluates to FALSE, then this function will return TRUE, otherwise it will
| return FALSE. Try out the xor() function by typing: xor(5 == 6, !FALSE)
sample()
sample takes a sample of the specified size from the elements of x using either with or without replacement.
which() Any()
The which() function takes a logical vector as an
| argument and returns the indices of the vector that are TRUE.
| Like the which() function, the functions any() and all() take logical vectors as their argument. The any() function will
| return TRUE if one or more of the elements in the logical vector is TRUE. The all() function will return TRUE if every
| element in the logical vector is TRUE.
mean()
| The mean() function takes a vector of numbers as input, and returns the average of all of the numbers in the input vector.
| Inputs to functions are often called arguments. Providing arguments to a function is also sometimes called passing arguments
| to that function. Arguments you want to pass to a function go inside the function's parentheses.
paste {base}
Concatenate vectors after converting to character.