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Article contents:== Outdated egg! This is an egg for CHICKEN 3, the unsupported old release. You're almost certainly looking for [[/eggref/4/srfi-47|the CHICKEN 4 version of this egg]], if it exists. If it does not exist, there may be equivalent functionality provided by another egg; have a look at the [[https://wiki.call-cc.org/chicken-projects/egg-index-4.html|egg index]]. Otherwise, please consider porting this egg to the current version of CHICKEN. [[tags: egg]] == srfi-47 [[toc:]] === Description An alternative arrays package conforming to [[http://srfi.schemers.org/srfi-47/srfi-47.html|SRFI-47]]. === Author Aubrey Jaffer, ported to Chicken by [[/users/felix winkelmann|felix winkelmann]] === Requirements None === Download [[http://code.call-cc.org/legacy-eggs/3/srfi-47.egg|srfi-47.egg]] === Documentation The full specification can be found at [[http://srfi.schemers.org/srfi-47/srfi-47.html|the SRFI website]]. The array prototypes for complex numbers are not supported ({{ac64}}). The 64-bit signed and unsigned array prototypes {{au64}} and {{as64}}) are provided but may not support the full range of numerical values on 32-bit architevtures. Additionally, the following procedure is defined: <procedure>(array-store ARRAY)</procedure> Returns the underlying storage object, which may be a vector or a [[http://srfi.schemers.org/&srfi/srfi-4.html|SRFI-4]] number vector. Note: this array package is ''not'' compatible with the default array library ({{srfi-25}}) that is provided with the base system. Don't use these two libraries together in the same program. === Examples <enscript highlight="scheme"> (use srfi-47) (define fred (make-array '#(#f) 8 8)) (define freds-diagonal (make-shared-array fred (lambda (i) (list i i)) 8)) (array-set! freds-diagonal 'foo 3) (array-ref fred 3 3) => foo (define freds-center (make-shared-array fred (lambda (i j) (list (+ 3 i) (+ 3 j))) 2 2)) (array-ref freds-center 0 0) => foo </enscript> === Changelog * 1.1 Fixed invalid implementation of {{array?}} [Thanks to Kon Lovett] * 1.0 Initial release === License Copyright (C) 2001, 2003 Aubrey Jaffer Permission to copy this software, to modify it, to redistribute it, to distribute modified versions, and to use it for any purpose is granted, subject to the following restrictions and understandings. 1. Any copy made of this software must include this copyright notice in full. 2. I have made no warranty or representation that the operation of this software will be error-free, and I am under no obligation to provide any services, by way of maintenance, update, or otherwise. 3. In conjunction with products arising from the use of this material, there shall be no use of my name in any advertising, promotional, or sales literature without prior written consent in each case. Description of your changes:

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