#lang declaration define lambda local bindings cond match values struct definitions transparent structs keyword arguments

lists vectors hash tables sets sequences for/list for/vector for/hash range stream basics

contracts on functions case-lambda currying pattern compose curry apply procedure keywords closures higher-order iteration tail calls

match literals match list patterns match struct patterns match predicates match guards match define match let ellipsis patterns or patterns and patterns

define-syntax-rule syntax-parse syntax objects datum->syntax syntax->datum with-syntax syntax parameters identifier macros phase levels macro hygiene

contract-out define/contract flat contracts function contracts struct contracts module provide require submodules module+ test

threads thread-wait channels sync semaphores custodians futures places events alarm-evt

ports with-input-from-file with-output-to-file string ports JSON read/write regexp matching HTTP client pattern servlet response rackunit checks exception handlers