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18 Standards Support

• Revised⁷ Report on the Algorithmic Language Scheme
• SRFI 1: List Library
• SRFI 2: and-let*
• SRFI 8: receive
• SRFI 9: Record Types
• SRFI 14: Character-set Library
• SRFI 23: Error Reporting Mechanism
• SRFI 27: Sources of Random Bits
• SRFI 39: Parameter Objects
• SRFI 69: Basic Hash Tables
• SRFI 112: Environment Inquiry
• SRFI 115: Scheme Regular Expressions
• SRFI 124: Ephemerons
• SRFI 125: Intermediate Hash Tables
• SRFI 128: Comparators (reduced)
• SRFI 129: Titlecase procedures
• SRFI 131: ERRR5RS Record Syntax (reduced)
• SRFI 133: Vector Library (R7RS-compatible)
• SRFI 140: Immutable Strings
• SRFI 143: Fixnums
• SRFI 158: Generators and Accumulators
• SRFI 162: Comparators sublibrary
• SRFI 219: Define higher-order lambda