site/contents/_includes/_reference-lang.md
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{@ _defs_.md || 0 @} {#sig||'||quote#} {#alias||'||quote#} {#sig||:||define#} {#alias||:||define#} {#sig||~||delete#} {#sig||+||module#} {#sig||^||call#} {#alias||^||call#} {#sig||/||dget#} {#sig||@||bind#} {#alias||@||bind#} {#sig||%||dset#} {#sig||>||save-symbol#} {#sig||<||load-symbol#} {#alias||->||unquote#} {#alias||=>||apply#} {#sig||#||quote-define#} {#sig||=||quote-bind#} {#op||bind||\* §||{{null}}|| Binds the specified value (auto-quoted) to an existing symbol {{sl}}.#} {#op||call||(\*) §||\*?|| Calls operator {{sl}} defined in scope {{q}}. #} {#op||case||(1)||\*?|| > {{1}} is a quotation containing _n_ different conditional branches. > > Each branch must be a quotation containing two quotations, and it is processed as follows: > > * if the first quotation evaluates to {{t}}, then the second quotation is executed. > * if the first quotation evaluates to {{f}}, then the following branch is processed (if any). > > > %sidebar% > > Example > > > > The following program prints "Smaller than 3": > > > > 2 ( > > ((> 3) ("Greater than 3" put!)) > > ((< 3) ("Smaller than 3" put!)) > > ((true) ("Exactly 3" put!)) > > ) case #} {#op||debug||{{null}}||{{null}}|| Toggles debug mode. #} {#op||debug?||{{null}}||B|| Returns {{t}} if debug mode is on, {{f}} otherwise. #} {#op||define||\* §||{{null}}|| Defines a new symbol {{sl}}, containing the specified value (auto-quoted).#} {#op||delete||§||{{null}}|| Deletes the specified symbol {{sl}}.#} {#op||eval||S||\*?|| Parses and interprets {{s}}. #} {#op||exit||{{null}}||{{null}}|| Exits the program or shell. #} {#op||foreach||(2) (1)||\*?|| Applies the quotation {{1}} to each element of {{2}}.#} {#op||format-error||(E)||S|| Formats the error {{e}} as a string. > %sidebar% > Example > > The following: > > `((error "MyError") (message "This is a test error")) format-error` > > produces: `"This is a test error"`#} {#op||from-json||S||\*|| Converts a JSON string into {{M -> min}} data.#} {#op||if||(3) (2) (1)||\*?|| If {{3}} evaluates to {{t}} then evaluates {{2}}, otherwise evaluates {{1}}.#} {#op||import||§||{{null}}|| Imports the a previously-loaded module {{sl}}, defining all its symbols in the current scope. #} {#op||linrec||(4) (3) (2) (1)||\*?|| > Implements linear recursions as follows: > > 1. Evaluates {{4}}. > * If {{4}} evaluates to {{t}}, then it evaluates {{3}}. > * Otherwises it executes {{2}} and recurses using the same four quotations. > 2. Finally, it executes {{1}}. > > > %sidebar% > > Example > > > > The following programs returns [120](class:kwd), the factorial of 5: > > > > (dup 0 ==) 'succ (dup pred) '* linrec #} {#op||load||S||\*?|| Parses and interprets the specified {{M}} file {{s}}, adding [.min](class:ext) if not specified. #} {#op||load-symbol||§||\*|| Loads the contents of symbol {{sl}} from the [.min\_symbols](class:file) file. #} {#op||loglevel||§||{{null}}|| > Sets the current logging level to {{sl}}. {{sl}} must be one of the following strings or quoted symbols: > > * debug > * info > * notice > * warn > * error > * fatal > > > %note% > > Note > > > > The default logging level is _notice_.#} {#op||module||(\*) §||{{null}}|| Creates a new module {{sl}} based on quotation {{q}}. #} {#op||module-sigils||(\*)||(S+)|| Returns a list of all sigils defined in module {{q}}.#} {#op||module-symbols||(\*)||(S+)|| Returns a list of all symbols defined in module {{q}}.#} {#op||publish||§ (*)||{{null}}|| Publishes symbol {{sl}} to the scope of [(\*)](class:kwd). > > > %sidebar% > > Example > > > Publish symbol [my-local-symbol](class:kwd) to [ROOT](class:kwd) scope: > > `'my-local-symbol ROOT publish` #} {#op||quote||\*||(\*)|| Wraps [\*](class:kwd) in a quotation. #} {#op||quote-bind||\* §||{{null}}|| Quotes {{any}} and binds the quotation to the existing symbol {{sl}}. #} {#op||quote-define||\* §||{{null}}|| Quotes {{any}} and assigns the quotation to the symbol {{sl}}, creating it if not already defined. #} {#op||raise||(E)||{{null}}|| Raises the error specified via the dictionary {{e}}.#} {#op||remove-symbol||§||{{null}}|| Removes the symbol {{sl}} from the [.min\_symbols](class:file) file. #} {#op||save-symbol||§||{{null}}|| Saves the contents of symbol {{sl}} to the [.min\_symbols](class:file) file. #} {#op||seal||§||{{null}}|| Seals symbol {{sl}}, so that it cannot be re-assigned. #} {#op||sigils||{{null}}||(S+)|| Returns a list of all sigils defined in the [ROOT](class:kwd) scope.#} {#op||source||§||(\*)|| Display the source code of symbol {{sl}} (if it has been implemented a {{M}} quotation). #} {#op||stored-symbols||{{null}}||(S+)|| Returns a quotation containing all symbols stored in the [.min\_symbols](class:file) file. #} {#op||symbols||{{null}}||(S+)|| Returns a list of all symbols defined in the [ROOT](class:kwd) scope.#} {#op||times||(\*) I||\*?|| Applies the quotation {{q}} {{i}} times.#} {#op||to-json||(\*)||S|| Converts a quotation into a JSON string {{s}}.#} {#op||try||(\*)||\*?|| Evaluates quotation {{q}} as a try/catch/finally block. > > {{q}} must contain the following elements: > > 1. A quotation containing the code to be evaluated (_try_ block). > 1. _(optional)_ A quotation containing the code to execute in case of error (_catch_ block). > 1. _(optional)_ A quotation containing the code to execute after the code has been evaluated, whether an error occurred or not (_finally_ block). > > > %sidebar% > > Example > > > > The following program executed on an empty stack prints the message "Insufficient items on the stack" and pushes 0 on the stack: > > > > ( > > (pop) > > (format-error puts) > > (0) > > ) try #} {#op||unless||(2) (1)||\*?|| If {{2}} evaluates to {{f}} then evaluates {{1}}.#} {#op||unquote||(\*)||\*|| Pushes the contents of quotation {{q}} on the stack. #} {#op||unseal||§||{{null}}|| Unseals symbol {{sl}}, so that it can be re-assigned. #} {#op||version||{{null}}||S|| Returns the current min version number. #} {#op||when||(2) (1)||\*?|| If {{2}} evaluates to {{t}} then evaluates {{1}}.#} {#op||while||(2) (1)||\*?|| > Executes {{1}} while {{2}} evaluates to {{t}}. > > > %sidebar% > > Example > > > > The following program prints all natural numbers from 0 to 10: > > > > 0 :count > > (count 10 <=) > > (count puts succ @count) while #} {#op||with||(2) (1)||\*?|| Applies quotation {{2}} within the scope of {{1}}. #} |