Added a full demo of Fun under ./demo.fun. Have Fun! (0.13.1)
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3 changed files with 190 additions and 1 deletions
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.gitignore
vendored
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.gitignore
vendored
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@ -3,6 +3,7 @@
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!.gitignore
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build*
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cmake*
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demo_*
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dist/
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lib/*.so
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out/
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@ -1,5 +1,5 @@
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cmake_minimum_required(VERSION 3.16)
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project(fun VERSION 0.13.0 LANGUAGES C)
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project(fun VERSION 0.13.1 LANGUAGES C)
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set(CMAKE_C_STANDARD 11)
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set(CMAKE_C_STANDARD_REQUIRED ON)
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188
demo.fun
Normal file
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demo.fun
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#!/usr/bin/env fun
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// Fun Interactive Demo
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// Run: FUN_LIB_DIR="$(pwd)/lib" ./build/fun demo.fun (Linux/macOS/FreeBSD)
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// $env:FUN_LIB_DIR="$PWD\lib"; .\build\fun.exe demo.fun (Windows PowerShell)
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// Use a stdlib helper from the repository (fallback to ./lib via preprocessor)
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#include <utils/math.fun>
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print("")
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print("=== Fun Interactive Demo ===")
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print("")
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print("== Basics: dynamic vs typed variables and typeof ==")
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x = 123
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print("x=" + to_string(x) + " typeof=" + typeof(x))
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x = "hello"
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print("x=" + to_string(x) + " typeof=" + typeof(x))
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number n = 42
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print("n=" + to_string(n) + " typeof=" + typeof(n))
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n = n + 8
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print("n=" + to_string(n) + " typeof=" + typeof(n))
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// Uncomment to see a runtime type error and halt the program:
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// n = "oops"
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boolean flag = 0
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print("flag=" + to_string(flag) + " typeof=" + typeof(flag))
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flag = 2 // gets clamped to 1
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print("flag(after clamp 2)=" + to_string(flag))
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int8 si = 130 // clamps to 127
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uint8 u8 = 300 // clamps to 255
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print("int8 si=" + to_string(si) + ", uint8 u8=" + to_string(u8))
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nil nothing = nil
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print("nothing typeof=" + typeof(nothing))
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print("")
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print("== Arithmetic, comparisons, and logic ==")
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print("3+4=" + to_string(3 + 4))
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print("10-3=" + to_string(10 - 3))
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print("6*7=" + to_string(6 * 7))
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print("20/3=" + to_string(20 / 3))
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print("20%3=" + to_string(20 % 3))
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print("2<3=" + to_string(2 < 3) + ", 3<=3=" + to_string(3 <= 3))
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print("5>2=" + to_string(5 > 2) + ", 2>=2=" + to_string(2 >= 2))
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print("2==2=" + to_string(2 == 2) + ", 2!=3=" + to_string(2 != 3))
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print("(1 && 0)=" + to_string(1 && 0) + ", (0 || 1)=" + to_string(0 || 1) + ", !0=" + to_string(!0))
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print("")
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print("== Strings and arrays ==")
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s = "alpha,beta,gamma"
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parts = split(s, ",")
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print("split -> len=" + to_string(len(parts)))
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print("join(parts,'|')=" + join(parts, "|"))
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print("substr('abcdef', 2, 3)=" + substr("abcdef", 2, 3))
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print("find('hello world','world')=" + to_string(find("hello world", "world")))
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arr = [1, 2, 3]
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print("arr len=" + to_string(len(arr)))
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push(arr, 4)
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print("after push 4 -> len=" + to_string(len(arr)))
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v = pop(arr)
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print("popped=" + to_string(v) + " len=" + to_string(len(arr)))
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insert(arr, 1, 99) // [1,99,2,3]
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print("after insert(1,99) arr[1]=" + to_string(arr[1]))
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set(arr, 2, 55) // [1,99,55,3]
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print("after set(2,55) arr[2]=" + to_string(arr[2]))
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print("contains(arr, 55)=" + to_string(contains(arr, 55)) + ", indexOf(arr, 99)=" + to_string(indexOf(arr, 99)))
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print("slice arr[1:3] len=" + to_string(len(arr[1:3])))
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print("join(arr, ',')=" + join(arr, ","))
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print("")
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print("== Enumerate and zip ==")
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for p in enumerate(["a", "b", "c"])
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print("idx=" + to_string(p[0]) + " val=" + to_string(p[1]))
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z = zip([1, 2], ["x", "y"])
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for pair in z
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print("(" + to_string(pair[0]) + "," + to_string(pair[1]) + ")")
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print("")
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print("== Maps (dictionaries) ==")
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m = {"name": "Alice", "age": 30}
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print("has(m,'age')=" + to_string(has(m, "age")))
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print("m['name']=" + to_string(m["name"]))
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m.age = 31
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print("m.age after = " + to_string(m.age))
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print("keys: " + join(keys(m), ","))
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print("values count=" + to_string(len(values(m))))
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print("")
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print("== Functions and higher-order ops (map/filter/reduce) ==")
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fun greet(name)
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print("Hello, " + to_string(name) + "!")
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greet("Fun")
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fun double(x)
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return x * 2
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nums = [1, 2, 3, 4, 5]
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twice = map(nums, double)
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print("len(map)=" + to_string(len(twice)) + " first=" + to_string(twice[0]))
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fun isEven(x)
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return (x % 2) == 0
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evens = filter(nums, isEven)
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print("filter evens len=" + to_string(len(evens)))
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fun sum(acc, x)
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return acc + x
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total = reduce(nums, 0, sum)
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print("reduce sum=" + to_string(total))
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print("")
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print("== If / else-if / else and loops ==")
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val = 7
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if (val < 0)
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print("neg")
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else if (val == 0)
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print("zero")
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else
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print("pos")
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print("for range(0, 5):")
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for i in range(0, 5)
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print(i)
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print("for in array:")
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for x in ["h", "i", "!"]
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print(x)
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print("while loop (count to 3):")
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c = 0
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while (c < 3)
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print(c)
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c = c + 1
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print("")
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print("== Classes (with 'this' and methods) ==")
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class Person(string name, number age)
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// default field values (can be overridden by constructor params)
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full = name + " (" + to_string(age) + ")"
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// required: first param is 'this'
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fun say(this)
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print("I am " + to_string(this.full))
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// typeof(instance) will return this string for Maps tagged with __class
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fun toString(this)
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return "Person"
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p = Person("Alice", 30)
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p.say()
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print("typeof p: " + typeof(p))
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print("")
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print("== Math and bitwise helpers ==")
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print("min(3,9)=" + to_string(min(3, 9)) + ", max(3,9)=" + to_string(max(3, 9)))
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print("clamp(15,0,10)=" + to_string(clamp(15, 0, 10)) + ", abs(-5)=" + to_string(abs(-5)))
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print("pow(2,10)=" + to_string(pow(2, 10)))
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print("band(0xF0,0x3C)=" + to_string(band(0xF0, 0x3C)))
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print("bor(0x0F,0x30)=" + to_string(bor(0x0F, 0x30)))
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print("bxor(0xFF,0x0F)=" + to_string(bxor(0xFF, 0x0F)))
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print("bnot(0x0F)=" + to_string(bnot(0x0F)))
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print("shl(1,4)=" + to_string(shl(1, 4)) + ", shr(128,3)=" + to_string(shr(128, 3)))
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print("rol(0x12,1)=" + to_string(rol(0x12, 1)) + ", ror(0x12,1)=" + to_string(ror(0x12, 1)))
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print("")
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print("== Random numbers ==")
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random(12345) // seed
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print("randomInt(1,10) -> " + to_string(randomInt(1, 10)))
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print("")
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print("== File IO and environment ==")
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write_ok = write_file("demo_tmp.txt", "Hello from Fun!\n")
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print("write_file ok=" + to_string(write_ok))
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content = read_file("demo_tmp.txt")
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print("read_file len=" + to_string(len(content)))
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print("PATH starts with: " + substr(env("PATH"), 0, 24))
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print("")
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print("== Library include demo ==")
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print("add(2,3) from utils/math.fun -> " + to_string(add(2, 3)))
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print("times(4,5) from utils/math.fun -> " + to_string(times(4, 5)))
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print("")
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print("=== Demo complete. Have Fun! ===")
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