String escapes
From Erights
(Difference between revisions)
Latest revision as of 13:29, 26 October 2010
E uses C-style backslash escapes within string and character literals. The defined escapes are:
| Sequence | Unicode | Meaning |
|---|---|---|
| \b | U+0008 | (Backspace) |
| \t | U+0009 | (Tab) |
| \n | U+000A | (Line feed) |
| \f | U+000C | (Form feed) |
| \r | U+000D | (Carriage return) |
| \" | U+0022 | " |
| \' | U+0027 | ' |
| \\ | U+005C | \ |
| \\ | U+002f | / (Defined in the BaseLexer for TermL JSON compatibility -- perhaps should not be in the E syntax, but no harm in it) |
| \<newline> | None | (Line continuation -- stands for no characters) |
| \uXXXX | U+XXXX | (BMP Unicode character, 4 hex digits) |
Consensus has not been reached on handling non-BMP characters. All other backslash-followed-by-character sequences are syntax errors.
Within E quasiliterals, backslash is not special and $\ plays the same role;
? println(`1 + 1$\n= ${1 + 1}`)
1 + 1
= 2
