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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


 
 
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