This is misc-extn.egg.info, produced by makeinfo version 4.7 from eggdoc-output.texi. INFO-DIR-SECTION The Algorithmic Language Scheme START-INFO-DIR-ENTRY * misc-extn.egg: (misc-extn.egg). Provides miscellaneous useful stuff. END-INFO-DIR-ENTRY  File: misc-extn.egg.info, Node: Top, Next: About this egg, Up: (dir) misc-extn egg ************* Provides miscellaneous useful stuff. Written by Kon Lovett (mailto:klovett@pacbell.net) This manual corresponds to version 1.9 of the misc-extn extension library for Chicken Scheme. * Menu: * About this egg:: * Documentation:: * Contributions:: * Examples:: * License:: * Index::  File: misc-extn.egg.info, Node: About this egg, Next: Documentation, Prev: Top, Up: Top 1 About this egg **************** * Menu: * Version history:: * Usage::  File: misc-extn.egg.info, Node: Version history, Next: Usage, Up: About this egg 1.1 Version history =================== `1.9' Rename ++f* -> f*++, remove mu & nu; me stupid `1.8' Moved procedures to own extension `1.7' Exports, additions `1.6' More stuff, rename fp++, etc -> ++fp `1.5' Added alist-delete-first `1.4' Added mu, nu, moved looping constructs to miscmacros `1.3' Removed use of define-syntax `1.2' Added assure, nl, rename set*! to stiff-set!, fp++, etc. `1.1' Added plain repeat, assoc macros signal errors `1.0' Initial release  File: misc-extn.egg.info, Node: Usage, Prev: Version history, Up: About this egg 1.2 Usage ========= Load this egg like so: `(require-extension misc-extn)'  File: misc-extn.egg.info, Node: Documentation, Next: Contributions, Prev: About this egg, Up: Top 2 Documentation *************** To access the procedures do: `(require-extension misc-extn-procs)'. * Menu: * Record:: * Control:: * Lists:: * Arithmetic:: * Association List:: * Symbol:: * Output:: * Argument List Processing::  File: misc-extn.egg.info, Node: Record, Next: Control, Up: Documentation 2.1 Record ========== -- macro: define-unchecked-record-type (define-unchecked-record-type T CTOR PRED [SLOT ...])) SRFI-9 '(define-record-type T CTOR PRED [SLOT ...])', except no checks are made for correct record type before slot access, and the record type symbol is not defined. For use when slot access is attempted _only_ after determining the correct record type explicitly. Do _not_ make constructed slot access procedures part of a public API.  File: misc-extn.egg.info, Node: Control, Next: Lists, Prev: Record, Up: Documentation 2.2 Control =========== -- macro: errorf (errorf [ID] FORMAT ARGS ...) Same as '(error [ID] (sprintf FORMAT ARGS ...))'. -- macro: swap-set! (swap-set! VAR1 VAR2) Swap settings of `VAR1' & `VAR2'. -- macro: fluid-set! (fluid-set! VAR VAL ...) Set each variable `VAR' to the value `VAL' in parallel. -- macro: stiff-set! (stiff-set! VAR VAL ...) Set each variable `VAR' to the value `VAL' in series. -- macro: (hash-let (([VAR | (VAR KEY)] ...) HASH-TABLE) BODY ...) Decompose `HASH-TABLE' entries into variable bindings. Should the `KEY' not be symbol, or the desired variable name `VAR' should not be the key, the '(VAR KEY)' form can be used. The `BODY ...' is evaluated with the specified bindings. -- macro: set-op! (set-op! VAR OP ARG ...) Sets `VAR' to the value `(OP VAR ARG ...)'. -- macro: assure (assure EXPRESSION ERROR-ARGUMENT ...) When `EXPRESSION' yields `#f' invoke `(error ERROR-ARGUMENT ...)'.  File: misc-extn.egg.info, Node: Lists, Next: Arithmetic, Prev: Control, Up: Documentation 2.3 Lists ========= -- macro: length=0? (length=0? LIST) List of length zero? -- macro: length=1? (length=1? LIST) List of length one? -- macro: length>1? (length>1? LIST) List of length greater than one?  File: misc-extn.egg.info, Node: Arithmetic, Next: Association List, Prev: Lists, Up: Documentation 2.4 Arithmetic ============== -- macro: ++ (++ VAL) Read-only increment. -- macro: - (-- VAL) Read-only decrement. -- macro: fx++ (fx++ VAL) Read-only fixnum increment. -- macro: fx- (fx-- VAL) Read-only fixnum decrement. -- macro: fp++ (fp++ VAL) Read-only flonum increment. -- macro: fp- (fp-- VAL) Read-only flonum decrement. -- macro: ++! (++! VAR) Mutable increment. -- macro: -! (--! VAR) Mutable decrement. -- macro: fx++! (fx++! VAR) Mutable fixnum increment. -- macro: fx-! (fx--! VAR) Mutable fixnum decrement. -- macro: fp++! (fp++! VAR) Mutable flonum increment. -- macro: fp-! (fp--! VAR) Mutable flonum decrement. -- procedure: make-log-function (make-log-function BASE) Returns a procedure of one argument, the logarithm function for the `BASE'.  File: misc-extn.egg.info, Node: Association List, Next: Symbol, Prev: Arithmetic, Up: Documentation 2.5 Association List ==================== -- macro: assoc-def (assoc-def KEY ALIST [TEST] [DEFAULT]) The assoc procedure with an optional test and default value. An error is signaled when not found. -- macro: assv-def (assv-def KEY ALIST [DEFAULT]) The assv procedure with a default value. An error is signaled when not found. -- macro: assq-def (assq-def KEY ALIST [DEFAULT]) The assq procedure with a default value. An error is signaled when not found. -- procedure: alist-inverse-ref (alist-inverse-ref VALUE ALIST [EQUALITY? eqv?] [DEFAULT #f]) Returns the first key associated with `VALUE' in the `ALIST' using the `EQUALITY?' predicate, else `DEFAULT'. -- procedure: alist-delete-first (alist-delete-first KEY ALIST [EQUALITY? equal?]) Deletes the first association from alist `ALIST' with the given key `KEY', using key-comparison procedure `EQUALITY?'. The dynamic order in which the various applications of equality are made is from the alist head to the tail. Return values may share common tails with the alist argument. The alist is not disordered - elements that appear in the result alist occur in the same order as they occur in the argument alist. The equality procedure is used to compare the element keys, 'key[i: 0 <= i < (length ALIST)]', of the alist's entries to the key parameter in this way: '(EQUALITY? KEY key[i])'.  File: misc-extn.egg.info, Node: Symbol, Next: Output, Prev: Association List, Up: Documentation 2.6 Symbol ========== -- procedure: defined? (defined? SYMBOL [ENVIRONMENT interaction-environment]) Is the `SYMBOL' is defined in the `ENVIRONMENT'? -- procedure: make-qualified-symbol (make-qualified-symbol NAMESPACE SYMBOL) Returns the Chicken namespace qualified `SYMBOL' for the `NAMESPACE'.  File: misc-extn.egg.info, Node: Output, Next: Argument List Processing, Prev: Symbol, Up: Documentation 2.7 Output ========== -- procedure: cout (cout EXPR ...) Like cout << arguments << args where argument can be any Scheme object. If it's a procedure (without args) it's executed rather than printed (like newline). -- procedure: cerr (cerr EXPR ...) Like cerr << arguments << args where argument can be any Scheme object. If it's a procedure (without args) it's executed rather than printed (like newline). -- procedure: nl (nl) Returns a string form of the newline character. -- procedure: identify-error (identify-error [CALLER] MSG ARGS ...) Prints a message like `(error ...)' to `(current-error-port)' but does not throw an exception.  File: misc-extn.egg.info, Node: Argument List Processing, Prev: Output, Up: Documentation 2.8 Argument List Processing ============================ -- procedure: filter-rest-argument (filter-rest-argument REST-LIST [PREDICATE]) Remove any keywords & keyword+value items from a #!rest argument list. When the optional predicate is supplied & it returns #t then the item is kept, otherwise the default processing occurs. The optional predicate takes the current item & a flag indicating if the previous item was a keyword.  File: misc-extn.egg.info, Node: Contributions, Next: Examples, Prev: Documentation, Up: Top 3 Contributions *************** William Annis - hash-let. Oleg Kiselyov's Standard Scheme "Prelude" - ++, ...  File: misc-extn.egg.info, Node: Examples, Next: License, Prev: Contributions, Up: Top 4 Examples ********** (use misc-extn) (hash-let ([name (foo "wow")] some-hashtable) (print name " " foo #\newline)) (stiff-set! x 1 y 2) ; x = 1 y = 2 (fluid-set! x y y x) ; x = 2 y = 1 (swap-set! x y) ; x = 1 y = 2  File: misc-extn.egg.info, Node: License, Next: Index, Prev: Examples, Up: Top 5 License ********* Copyright (c) 2006, Kon Lovett. All rights reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the Software), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED ASIS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  File: misc-extn.egg.info, Node: Index, Prev: License, Up: Top Index ***** [index] * Menu: * (hash-let (([VAR | (VAR KEY)] ...) HASH-TABLE) BODY ...): Control. (line 27) * ++: Arithmetic. (line 7) * ++!: Arithmetic. (line 37) * --: Arithmetic. (line 12) * --!: Arithmetic. (line 42) * alist-delete-first: Association List. (line 31) * alist-inverse-ref: Association List. (line 25) * assoc-def: Association List. (line 7) * assq-def: Association List. (line 19) * assure: Control. (line 39) * assv-def: Association List. (line 13) * cerr: Output. (line 14) * cout: Output. (line 7) * define-unchecked-record-type: Record. (line 7) * defined?: Symbol. (line 7) * errorf: Control. (line 7) * filter-rest-argument: Argument List Processing. (line 7) * fluid-set!: Control. (line 17) * fp++: Arithmetic. (line 27) * fp++!: Arithmetic. (line 57) * fp--: Arithmetic. (line 32) * fp--!: Arithmetic. (line 62) * fx++: Arithmetic. (line 17) * fx++!: Arithmetic. (line 47) * fx--: Arithmetic. (line 22) * fx--!: Arithmetic. (line 52) * identify-error: Output. (line 26) * length=0?: Lists. (line 7) * length=1?: Lists. (line 12) * length>1?: Lists. (line 17) * make-log-function: Arithmetic. (line 67) * make-qualified-symbol: Symbol. (line 12) * nl: Output. (line 21) * set-op!: Control. (line 34) * stiff-set!: Control. (line 22) * swap-set!: Control. (line 12)  Tag Table: Node: Top249 Node: About this egg641 Node: Version history811 Node: Usage1423 Node: Documentation1591 Node: Record1933 Node: Control2515 Node: Lists3706 Node: Arithmetic4063 Node: Association List5170 Node: Symbol6822 Node: Output7274 Node: Argument List Processing8122 Node: Contributions8708 Node: Examples8923 Node: License9242 Node: Index10423  End Tag Table