fun/examples/io/word_count.fun

#!/usr/bin/env fun

/*
 * This file is part of the Fun programming language.
 * https://fun-lang.xyz/
 *
 * Copyright 2026 Johannes Findeisen
 * Licensed under the terms of the Apache-2.0 license.
 * https://opensource.org/license/apache-2-0
 *
 * Added: 2026-03-25
 */

// String helpers
#include <strings.fun>

path = "./README.md"
txt = read_file(path)
if (len(txt) == 0)
  print("no content: " + path)
  return 0

txt = str_to_lower(txt)
txt = str_replace_all(txt, "\n", " ")
parts = str_split(txt, " ")
freq = {}
for w in parts
  w = str_trim(w)
  if (len(w) == 0) continue
  c = to_number(freq[w])
  if (c <= 0) c = 0
  freq[w] = c + 1

for k in keys(freq)
  print(k + ": " + to_string(freq[k]))

/* Possible output (first 10 lines; counts depend on README.md contents): 
#: 1
fun: 19
([https://fun-lang.xyz](https://fun-lang.xyz)): 1
##: 9
what: 2
is: 16
fun?: 1
a: 9
small,: 1
strict,: 1
and: 15
simple: 3
programming: 5
language: 5
that: 4
runs: 1
on: 3
compact: 1
stack-based: 1
virtual: 1
machine.: 1
the: 24
c: 2
core: 3
intentionally: 1
minimal;: 1
most: 6
functionality: 1
standard: 2
libraries: 2
are: 6
implemented: 2
in: 19
itself.: 2
emphasizes: 1
simplicity,: 1
consistency,: 1
joy: 3
coding.: 2
an: 1
experiment,: 1
just: 2
for: 6
fun,: 3
but: 5
works!: 1
highly: 2
strict: 1
language,: 1
also: 1
simple.: 1
it: 2
looks: 2
like: 4
python: 1
(my: 1
favorite: 1
language),: 1
there: 2
differences.: 1
influenced: 1
by: 2
**[bash](https://www.gnu.org/software/bash/)**,: 1
**[c](https://en.wikipedia.org/wiki/the_c_programming_language)**,: 1
**[lua](https://www.lua.org/)**,: 1
php,: 1
**[python](https://www.python.org/)**,: 1
rust: 1
(most: 1
influences: 1
came: 1
from: 2
linked: 1
languages).: 1
will: 4
ever: 1
be: 5
100%: 1
free: 1
under: 1
terms: 1
of: 3
[apache-2.0: 1
license](https://opensource.org/license/apache-2-0).: 1
idea: 1
-: 48
simplicity: 2
consistency: 2
to: 7
extend: 1
hackable: 1
coding: 2
fun!: 1
characteristics: 1
dynamic: 1
optionally: 1
statically: 1
typed: 1
type: 1
safety: 1
written: 6
(c99): 1
internal: 1
libs: 2
with: 2
no_camel_case: 1
even: 1
when: 1
except: 1
class: 1
names: 1
only: 2
minimal: 1
function: 1
set: 1
c,: 1
other: 1
functions: 1
manifesto: 1
built: 2
idea:: 1
should: 6
enjoyable,: 1
elegant,: 1
consistent.: 1
###: 5
philosophy: 1
**fun: 2
fun**<br>: 1
spark: 1
creativity,: 1
not: 4
frustration.: 1
code: 3
feels: 3
light,: 1
playful,: 1
rewarding.: 1
uses: 1
nothing**<br>: 1
minimalism: 1
power.: 1
no: 7
unnecessary: 1
features,: 1
endless: 1
syntax: 1
variations,: 1
formatting: 1
debates.: 1
clean,: 1
uniform: 1
code.: 1
**indentation: 1
truth**<br>: 1
two: 1
spaces,: 1
always.: 1
tabs,: 1
four-space: 1
wars.: 1
look: 1
same: 2
everywhere,: 1
your: 1
laptop: 1
/usr/bin/fun.: 1
**one: 1
way: 1
do: 1
it**<br>: 1
clutter,: 1
15: 1
ways: 1
writing: 1
thing.: 1
means: 1
clarity.: 1
**hackable: 1
nature**<br>: 1
small: 1
embeddable,: 1
lua.: 1
easy: 1
understand,: 1
extend,: 1
tinker: 1
—: 2
true: 1
hacker: 1
spirit.: 1
**beautiful: 1
defaults**<br>: 1
doesn’t: 1
need: 1
linters,: 1
formatters,: 1
or: 3
style: 1
guides.: 1
beauty: 1
in.: 1
community: 3
about: 2
being: 1
fastest: 1
feature-rich.: 1
it’s: 1
sharing: 1
be:: 1
respectful: 1
curious: 1
creative: 1
open: 1
everyone: 1
name: 1
says:: 1
unites: 1
nerds.: 1
please: 1
visit: 1
[fun: 1
page](https://fun-lang.xyz/community/): 1
get: 1
touch.: 1
goal: 1
home: 1
developers: 1
who:: 1
love: 1
minimal,: 1
elegant: 1
tools: 1
believe: 1
freedom: 1
want: 1
write: 1
good: 2
may: 2
change: 1
world: 1
make: 1
little: 1
more: 1
fun.: 1
features: 2
functions/classes/objects: 1
if/else: 2
try/catch/finally: 1
lib: 1
(./lib/): 1
see: 2
[./lib/](https://git.xw3.org/fun/fun/src/branch/main/lib): 2
library: 1
provides.: 1
optional: 1
extensions: 1
(build-time: 1
selectable: 1
/: 2
testing: 1
this: 1
linux: 1
actually):: 1
[cgi](https://en.wikipedia.org/wiki/common_gateway_interface): 1
support: 1
builtin: 1
using: 1
[kcgi](https://kristaps.bsd.lv/kcgi/): 1
(optional): 11
&#9744;: 2
[curl: 1
(libcurl)](./docs/external/curl.md): 1
&#9745;: 11
[ini: 1
(iniparser)](./docs/external/ini.md): 1
[json: 1
(json-c)](./docs/external/json.md): 1
[libsql](./docs/external/libsql.md): 1
[pcre2](./docs/external/pcre2.md): 1
[pcsc: 1
(smart: 1
cards)](./docs/external/pcsc.md): 1
[openssl](./docs/external/openssl.md): 1
[sqlite](./docs/external/sqlite.md): 1
[xml: 1
(libxml2)](./docs/external/xml2.md): 1
=: 2
done: 1
planned: 1
progress.: 1
note:: 2
all: 1
above: 1
implemented.: 1
those: 1
who: 1
marked: 1
"done": 1
probaly: 1
remain: 1
i: 1
don't: 1
know: 1
actually...: 1
;): 1
some: 2
available: 1
diretory.: 1
future: 1
enhancements: 1
openssl: 1
quickstart: 1
(md5): 1
dedicated: 1
page:: 1
./docs/external/openssl.md: 1
documentation: 2
looking: 1
docs?: 1
start: 1
here:: 1
local: 1
index:: 1
[docs/readme.md](./docs/readme.md): 1
handbook:: 1
[docs/handbook.md](./docs/handbook.md): 1
types: 1
overview:: 1
[docs/types.md](./docs/types.md): 1
repl: 1
guide:: 1
[docs/repl.md](./docs/repl.md): 1
testing:: 1
[docs/testing.md](./docs/testing.md): 1
troubleshooting:: 1
[docs/troubleshooting.md](./docs/troubleshooting.md): 1
additional: 1
references:: 1
specification:: 1
[spec/v0.3.md](./spec/v0.3.md): 1
(work: 1
progress): 1
examples: 1
demonstrating: 1
features:: 1
[examples/](./examples/): 1
internals: 1
vm: 1
opcodes: 1
live: 1
[src/](./src/): 1
(see: 1
[src/vm/](./src/vm): 1
opcode: 1
implementations): 1
project: 1
evolving;: 1
documents: 1
lag: 1
behind.: 1
docs: 1
index: 1
`./docs/readme.md`: 1
up‑to‑date: 1
entry: 1
point.: 1
author: 1
johannes: 1
findeisen: 1
<you@hanez.org>: 1
*/