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| -rw-r--r-- | README.md | 52 |
1 files changed, 35 insertions, 17 deletions
@@ -32,23 +32,41 @@ One can only hope this feature will be added in the future. Note that all syntax described is liable to sudden and violent change. ```HALK -let variable = 4; -let another_variable = "Hello, World!\n"; - -fn main _ { - while variable >= 0 { - say another_variable; - variable -= 1; - } - say "done.\n"; -} - - -Hello, World! -Hello, World! -Hello, World! -Hello, World! -done. +[comments in square brackets] + +[preprocessor directives] +#INCLUDE 'math.halk'; [looks for a 'math.halk' file in the cwd, then ~/halk/include] +#INCLUDE 'io' AS ''; [bring everything in 'io' into global scope] + + +let.hello -> 'hello, '; [variables must be given a value at declaration] + +let.PI => math/PI; [namespaces are accessed with a '/'] + [constants are denoted with a '=>'] + +fn.greeting,to -> { [functions defined with: `fn.<name>,<argument>,..., -> {<body>};`] + let.message -> strcat.hello,to; [functions are right-associative] + + stdo.message; [since 'io' was brought into global scope, we + do not prefix it with a namespace/] +}; + +fn.sum_all._ -> { [variadic functions are possible with the reserved '_' argument, + which is treated as an array] + return.foldl.+,0,_; +}; + +fn.fibonacci.n -> { + if.or.(num=?.n, 0), (num=?.n, 1) -> { [functions ending in '?' should be predicates] + return.1; + }; + return.+.(fibonacci. -.n, 1), (fibonacci. -.n, 2); [parens can be used to group function application] +}; + +fn.main -> { [where our code will begin executing] + greeting.[comments can be placed *anywhere*]"world."; + exit.0; [exit with code 0 for success] +}; ``` |