2.1.3.1 Interpolation in Double-quoted Strings

Interpolation is a special process whereby certain special strings written in ASCII are replaced by something different. In2.1.1 Single-quoted Strings, we noted that certain sequences in single-quoted strings (namely, \\ and \') were treateddifferently. This is very similar to what happens with interpolation. For example, in interpolated double-quoted strings, various sequences preceded by a `\' character act different.

Here is a chart of the most common of these:

String	Interpolated As
`\\'	an actual, single backslash character
`\$'	a single $ character
`\@'	a single @ character
`\t'	tab
`\n'	newline
`\r'	hard return
`\f'	form feed
`\b'	backspace
`\a'	alarm (bell)
`\e'	escape
`\033'	character represented by octal value, 033
`\x1b'	character represented by hexadecimal value, 1b