mirror of
https://github.com/Nexoniarz/Finch.git
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b872be3176
- fn Struct.method(...) with self by reference, also on C structs
- map[K]V: insertion-ordered hash maps, literals, m[k] += 1, has/get/remove/keys/values
- -> T! / -> !, return error(...), or <value>, or { err }, try; fallible int/float/read_file/write_file/delete_file
- for i, x in list / for k, v in map
- print and str() share one text formatter
- LSP: method and map completion, method signatures; grammar and snippets for VS Code and Kate
- tests: 74 (methods, errors, maps + 11 failure cases); docs at all three levels, en and pl
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
101 lines
2.2 KiB
Text
101 lines
2.2 KiB
Text
struct Stats {
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int count
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[]str words
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}
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fn count_words(str text) -> map[str]int {
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map[str]int counts
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for w in text.split(" ") {
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if w.len > 0 {
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counts[w.lower()] += 1 // a missing key starts at 0
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}
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}
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return counts
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}
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fn main() {
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ages := ["anna": 31, "bob": 25]
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ages["cyril"] = 40
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ages["bob"] = 26
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print(ages, ages.len)
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print(ages["anna"], ages.has("bob"), ages.has("zoe"), ages.get("zoe", -1))
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for name, age in ages {
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print(name, "is", age)
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}
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for name in ages {
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print(name)
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}
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print(ages.remove("bob"), ages.remove("bob"), ages)
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ages["dave"] = 19 // goes to the end; insertion order is kept
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print(ages.keys(), ages.values())
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counts := count_words("the cat and The dog and THE bird")
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print(counts)
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print(str(counts))
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// values that own memory
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map[str][]int groups
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for i in 0..10 {
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key := "odd"
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if i % 2 == 0 {
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key = "even"
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}
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groups[key].push(i) // m[k].push(x) adds the key with an empty array first
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}
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print(groups)
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copy := groups
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copy["odd"].clear()
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print(groups["odd"].len, copy["odd"].len)
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map[int]Stats by_len
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for w in ["a", "bb", "cc", "ddd", "e"] {
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by_len[w.len].count += 1
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by_len[w.len].words.push(w)
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}
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for n, s in by_len {
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print(n, s.count, s.words)
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}
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// many keys: growing, removing and adding again
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map[int]int squares
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for i in 0..1000 {
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squares[i] = i * i
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}
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for i in 0..1000 {
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if i % 3 != 0 {
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squares.remove(i)
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}
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}
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for i in 2000..2010 {
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squares[i] = 1
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}
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total := 0
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for k, v in squares {
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total += v
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}
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print(squares.len, total, squares[999], squares.has(998))
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map[char]bool seen
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for c in "hello" {
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seen[c] = true
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}
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print(seen.keys())
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empty := ages
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empty.clear()
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print(empty, empty.len, ages.len)
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map[str]str m = [:]
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m["x"] = "1"
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print(m)
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for i, w in ["zero", "one", "two"] {
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print(i, w)
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}
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for i, c in "hey" {
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print(i, c)
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}
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}
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