From 2afb23928e1984d475cc460e1672e8f6fa0e4dbe Mon Sep 17 00:00:00 2001 From: Marshall Lochbaum Date: Wed, 11 Aug 2021 17:21:31 -0400 Subject: Allow clicking on header to get fragment link --- docs/spec/literal.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'docs/spec/literal.html') diff --git a/docs/spec/literal.html b/docs/spec/literal.html index 3b2b248a..35a280cc 100644 --- a/docs/spec/literal.html +++ b/docs/spec/literal.html @@ -4,7 +4,7 @@ Specification: BQN literal notation
(github) / BQN / spec
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Specification: BQN literal notation

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Specification: BQN literal notation

A literal is a single token that indicates a fixed character, number, or array. While literals indicate values of a data type, primitives indicate values of an operation type: function, 1-modifier, or 2-modifier.

Two types of literal deal with text. As the source code is considered to be a sequence of unicode code points ("characters"), and these code points are also used for BQN's character data type, the representation of a text literal is very similar to its value. In a text literal, the newline character is always represented using the ASCII line feed character, code point 10. A character literal is enclosed with single quotes ' and its value is identical to the single character between them. A string literal is enclosed in double quotes ", and any double quotes between them must come in pairs, as a lone double quote marks the end of the literal. The value of a string literal is a rank-1 array whose elements are the characters in between the enclosing quotes, after replacing each pair of double quotes with only one such quote. The null literal is the token @ and represents the null character, code point 0.

The format of a numeric literal is more complicated. From the tokenization rules, a numeric literal consists of a numeric character (one of ¯∞π.0123456789) followed by any number of numeric or alphabetic characters. Some numeric literals are valid and indicate a number, while others are invalid and cause an error. The grammar for valid numbers is given below in a BNF variant. Only four alphabetic characters are allowed: "i", which separates the real and imaginary components of a complex number, "e", which functions as in scientific notation, and the uppercase versions of these letters. Not included in this grammar are underscores—they can be placed anywhere in a number, including after the last non-underscore character, and are ignored entirely.

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