Go to the first, previous,
next, last section, table
of contents.
For a description of the notations used for numbers, see section 6.2.
- . + -
- These are used in numbers, and may also occur anywhere in an identifier
except as the first character. A delimited plus or minus sign by itself is
also an identifier. A delimited period (not occurring within a number or
identifier) is used in the notation for pairs (section 6.3.2), and to
indicate a rest-parameter in a formal parameter list (section 4.1.4). A
delimited sequence of three successive periods is also an identifier.
- ( )
- Parentheses are used for grouping and to notate lists (section 6.3.2).
- '
- The single quote character is used to indicate literal data (section
4.1.2).
- `
- The backquote character is used to indicate almost-constant data (section
4.2.6).
- , ,@
- The character comma and the sequence comma at-sign are used in conjunction
with backquote (section 4.2.6).
- "
- The double quote character is used to delimit strings (section 6.3.5).
- \
- Backslash is used in the syntax for character constants (section 6.3.4)
and as an escape character within string constants (section 6.3.5).
- [ ] { } |
- Left and right square brackets and curly braces and vertical bar are
reserved for possible future extensions to the language.
- #
- Sharp sign is used for a variety of purposes depending on the character
that immediately follows it:
- #t #f
- These are the boolean constants (section 6.3.1).
- #\
- This introduces a character constant (section 6.3.4).
- #(
- This introduces a vector constant (section 6.3.6). Vector constants
are terminated by ")".
- #e #i #b #o #d #x
- These are used in the notation for numbers (section 6.2.4).
Go to the first, previous,
next, last section, table
of contents.