October 2024
Intermediate to advanced
272 pages
6h 54m
English
Content preview from Seven Obscure Languages in Seven WeeksBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Exploring Statements
SNOBOL statements can be informally categorized into one of four classes based on their function and purpose within the language: assignment, pattern matching, replacement, and end. The distinctions between these classes are merely semantic. They relate to the meaning and purpose of the statements rather than their syntax.
Any SNOBOL statement consists of at least one of the following—a label, a subject group, and a goto:
- Optional label
- Optional subject group:
- Subject
- Optional pattern
- Optional object group:
- “ = ” (don’t forget the spaces!)
- Optional object
- Optional goto
The simplest statement, and by extension, the simplest SNOBOL program, consists solely of the END label. The label has a special meaning: it represents the end ...
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