diff options
| author | c | 2023-12-05 13:14:50 -0500 |
|---|---|---|
| committer | c | 2023-12-05 13:14:50 -0500 |
| commit | 4d41b1186f3dc721102cd1d9e47dde233f7b1e40 (patch) | |
| tree | e7a715570d3c13ba041cb08f722ed65d009ede5f /examples | |
| parent | a75b474bf153388e39c31b072a4bf0d49190cc5b (diff) | |
Updated examples.
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/hello.halk | 14 | ||||
| -rw-r--r-- | examples/preprocessor.halk | 38 |
2 files changed, 27 insertions, 25 deletions
diff --git a/examples/hello.halk b/examples/hello.halk index d046d19..0fb2fd6 100644 --- a/examples/hello.halk +++ b/examples/hello.halk @@ -1,18 +1,16 @@ -` comments in backticks ` +` Comments in backticks. ` -#inc# #somefile.halk# ` include a file ` -#inc# #stdio# ` include the 'stdio' header (file path stored in the macro #stdio#) ` +:str:hello = "Hello"; ` Define a variable "hello" with the type "str". ` -:str:hello = "Hello"; ` define a variable 'hello' with the type 'str' ` - -:str:greet.:str:target = strcat.hello, ", ", target; ` define a function 'greet' that returns a 'str' and accepts an - argument 'target', also of type 'str' ` +:str:greet.:str:target = strcat.hello, ", ", target; ` Define a function "greet" that returns a "str" and accepts an + argument "target", also of type "str". ` ` some more functions ` :void:add1.:int:n+=. n, 1; :int:fac.:int:n=?.(=.n,0),1,*.n,fac.-.n,1; -:int:fib. :int:n = ?. (<=. n, 1), ` multiple lines can be used for clarity ` +:int:fib. :int:n = ?. (<=. n, 1), ` Multiple lines and whitespace can be used for clarity. ` n, +. fib.(-. n, 1), fib. -. n, 2); +io!print.greet."world!"; ` Use previously defined function to print "Hello, world!". ` diff --git a/examples/preprocessor.halk b/examples/preprocessor.halk index 9e3f6b5..e755ca2 100644 --- a/examples/preprocessor.halk +++ b/examples/preprocessor.halk @@ -1,29 +1,33 @@ ` - #def# #ID# [#VALUE#] set a macro - #fed# #ID# unset a macro + Preprocessor directive types: + + #FOO# Call a macro or function. + #=BAR# A string that can be stored by a macro. - #cde# #VALUE# leave code as is + #def# #ID# [#=VALUE#] Set a macro. + #fed# #ID# Unset a macro. - #ddo# #ID?# #DIR# if defined, do #DIR# (Defined DO) - #udo# #ID?# #DIR# if undefined, do #DIR# (UnDefined Do) + #dex# #ID?# ... #xed# If macro ID is defined, expand to ... (Defined EXpand). + #uex# #ID?# ... #xeu# If macro ID is undefined, expand to ... (Undefined EXpand). - #inc# #FPATH# include a file + #inc# #FILE# Include a file; first searches cwd, then some kind of $HALKPATH. - #ID# call a macro + #ID# Call a macro. ` -` example usage: ` +` Example usage: ` -#def# #VERSION# #"31.4.1"# +` Simple header guard. ` +#uex# #TEST# +#def# #TEST# -#ddo# #BSD# #inc# #bsd_support.halk# +#inc# #io# +#inc# #packet.hlk# -#udo# #OS# # - some_error_func."os not specified"; -# +#def# #VERSION# #= 3.14.1 # +#def# #ERR# #= {io!print."Error D:"; die;} # -#def# #OSTYPE# # - os/shell."sysctl kernel.ostype" -# +:packet_t:p = packet!get; +?.(~=.p!version,#VERSION#),#ERR#; ` Throw error if versions do not match. ` -stdio/pln.#OSTYPE# +#xeu# |