Programming Ruby 3.3

Source Layout

Ruby is a line-oriented language. Ruby expressions and statements are terminated at the end of a line unless the parser can determine that the statement is incomplete. Some examples are when the last token on a line is an operator or comma, or when an open delimiter, such as a parenthesis, square bracket, or curly brace has not been closed. A backslash at the end of a line also tells Ruby to continue the expression onto the next line:

# no backslash '\' needed -- ends with an operator
d = 4 + 5 +
    6 + 7

# no backslash '\' needed -- has an unclosed parenthesis
e = (4 + 5
     + 6 + 7)

# backslash '\' needed -- ends with a number
f = 8 + 9   \
    + 10

A semicolon can be used to separate multiple expressions on a line: ...