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rename function

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This commit is contained in:
Joeri Exelmans 2025-05-10 14:45:50 +02:00
parent d363d73dbd
commit 1fa47d4abd
2 changed files with 8 additions and 8 deletions
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4
lib/util/trie.js
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@ -105,7 +105,7 @@ export const insert = trie => key => value => {
}; };
// given a prefix, return a string X such that prefix+X is a possibly larger prefix for the same entries as the original prefix. // given a prefix, return a string X such that prefix+X is a possibly larger prefix for the same entries as the original prefix.
export const growKey = trie => key => { export const growPrefix = trie => key => {
const [pos, prefix] = binarySearch(trie.children, key); const [pos, prefix] = binarySearch(trie.children, key);
if (prefix.length === 0) { if (prefix.length === 0) {
return ""; return "";
@ -121,7 +121,7 @@ export const growKey = trie => key => {
} }
if (key.length > haveKey.length) { if (key.length > haveKey.length) {
if (key.startsWith(haveKey)) { if (key.startsWith(haveKey)) {
return growKey(haveChildNode)(key.slice(haveKey.length)); return growPrefix(haveChildNode)(key.slice(haveKey.length));
} }
} }
return ""; return "";

12
tests/trie.js
View file

@ -1,5 +1,5 @@
import { pretty } from "../lib/util/pretty.js"; import { pretty } from "../lib/util/pretty.js";
import { insert, emptyTrie, growKey, suggest } from "../lib/util/trie.js"; import { insert, emptyTrie, growPrefix, suggest } from "../lib/util/trie.js";
// insertion // insertion
const with1Item = insert(emptyTrie)('abba')('dancing queen'); const with1Item = insert(emptyTrie)('abba')('dancing queen');
@ -20,11 +20,11 @@ const with8Items = insert(with7Items)('')('hi!');
console.log(pretty(with8Items)); console.log(pretty(with8Items));
// grow key (for auto-complete) // grow key (for auto-complete)
console.log(growKey(with6Items)("a")); // b console.log(growPrefix(with6Items)("a")); // b
console.log(growKey(with6Items)("ab")); // (empty string) console.log(growPrefix(with6Items)("ab")); // (empty string)
console.log(growKey(with6Items)("abb")); // a console.log(growPrefix(with6Items)("abb")); // a
console.log(growKey(with6Items)("f")); // ood console.log(growPrefix(with6Items)("f")); // ood
console.log(growKey(with6Items)("abo")); // riginal console.log(growPrefix(with6Items)("abo")); // riginal
// suggest (also for auto-complete) // suggest (also for auto-complete)
console.log(suggest(with8Items)("a")(3)); // 'ab', 'abba', 'aboriginal' console.log(suggest(with8Items)("a")(3)); // 'ab', 'abba', 'aboriginal'