Equality

The most basic form of comparison is equality. Let's briefly recap its syntax. The following statements all evaluate to TRUE (feel free to try them out in the console).

3 == (2 + 1)
"intermediate" != "r"
TRUE != FALSE
"Rchitect" != "rchitect"

Notice from the last expression that R is case sensitive: "R" is not equal to "r". Keep this in mind when solving the exercises in this chapter!

Deze oefening maakt deel uit van de cursus

Intermediate R

Cursus bekijken

Oefeninstructies

In the editor on the right, write R code to see if TRUE equals FALSE.
Likewise, check if -6 * 14 is not equal to 17 - 101.
Next up: comparison of character strings. Ask R whether the strings "useR" and "user" are equal.
Finally, find out what happens if you compare logicals to numerics: are TRUE and 1 equal?

Praktische interactieve oefening

Probeer deze oefening eens door deze voorbeeldcode in te vullen.

# Comparison of logicals


# Comparison of numerics


# Comparison of character strings


# Compare a logical with a numeric

Code bewerken en uitvoeren