(prefix: string): <V>(self: Trie<V>) => Array<[string, V]>
<V>(self: Trie<V>, prefix: string): Array<[string, V]>Returns an Array<[string, V]> of the entries within the Trie whose keys
start with prefix, including the entry for prefix itself when it exists.
Example (Converting prefixed entries to an array)
import { Trie } from "effect"
import * as assert from "node:assert"
const trie = Trie.empty<number>().pipe(
Trie.insert("shells", 0),
Trie.insert("sells", 1),
Trie.insert("sea", 2),
Trie.insert("she", 3)
)
const result = Trie.toEntriesWithPrefix(trie, "she")
assert.deepStrictEqual(result, [["she", 3], ["shells", 0]])getters
Source effect/Trie.ts:4054 lines
export const const toEntriesWithPrefix: {
(prefix: string): <V>(
self: Trie<V>
) => Array<[string, V]>
<V>(self: Trie<V>, prefix: string): Array<
[string, V]
>
}
Returns an Array<[string, V]> of the entries within the Trie whose keys
start with prefix, including the entry for prefix itself when it exists.
Example (Converting prefixed entries to an array)
import { Trie } from "effect"
import * as assert from "node:assert"
const trie = Trie.empty<number>().pipe(
Trie.insert("shells", 0),
Trie.insert("sells", 1),
Trie.insert("sea", 2),
Trie.insert("she", 3)
)
const result = Trie.toEntriesWithPrefix(trie, "she")
assert.deepStrictEqual(result, [["she", 3], ["shells", 0]])
toEntriesWithPrefix: {
(prefix: stringprefix: string): <function (type parameter) V in <V>(self: Trie<V>): Array<[string, V]>V>(self: Trie<V>(parameter) self: {
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
interface Trie<in out Value>An immutable string-keyed map optimized for prefix lookup. Iteration yields
[key, value] pairs in key order, and update operations such as insert and
remove return new Trie values.
Example (Using a trie for prefix search)
import { Trie } from "effect"
// Create a trie with string-to-number mappings
const trie: Trie.Trie<number> = Trie.make(
["apple", 1],
["app", 2],
["application", 3],
["banana", 4]
)
// Get values by exact key
console.log(Trie.get(trie, "apple")) // Some(1)
console.log(Trie.get(trie, "grape")) // None
// Find all keys with a prefix
console.log(Array.from(Trie.keysWithPrefix(trie, "app")))
// ["app", "apple", "application"]
// Iterate over all entries (sorted alphabetically)
for (const [key, value] of trie) {
console.log(`${key}: ${value}`)
}
// Output: "app: 2", "apple: 1", "application: 3", "banana: 4"
// Check if key exists
console.log(Trie.has(trie, "app")) // true
// Get size
console.log(Trie.size(trie)) // 4
Trie<function (type parameter) V in <V>(self: Trie<V>): Array<[string, V]>V>) => interface Array<T>Array<[string, function (type parameter) V in <V>(self: Trie<V>): Array<[string, V]>V]>
<function (type parameter) V in <V>(self: Trie<V>, prefix: string): Array<[string, V]>V>(self: Trie<V>(parameter) self: {
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
interface Trie<in out Value>An immutable string-keyed map optimized for prefix lookup. Iteration yields
[key, value] pairs in key order, and update operations such as insert and
remove return new Trie values.
Example (Using a trie for prefix search)
import { Trie } from "effect"
// Create a trie with string-to-number mappings
const trie: Trie.Trie<number> = Trie.make(
["apple", 1],
["app", 2],
["application", 3],
["banana", 4]
)
// Get values by exact key
console.log(Trie.get(trie, "apple")) // Some(1)
console.log(Trie.get(trie, "grape")) // None
// Find all keys with a prefix
console.log(Array.from(Trie.keysWithPrefix(trie, "app")))
// ["app", "apple", "application"]
// Iterate over all entries (sorted alphabetically)
for (const [key, value] of trie) {
console.log(`${key}: ${value}`)
}
// Output: "app: 2", "apple: 1", "application: 3", "banana: 4"
// Check if key exists
console.log(Trie.has(trie, "app")) // true
// Get size
console.log(Trie.size(trie)) // 4
Trie<function (type parameter) V in <V>(self: Trie<V>, prefix: string): Array<[string, V]>V>, prefix: stringprefix: string): interface Array<T>Array<[string, function (type parameter) V in <V>(self: Trie<V>, prefix: string): Array<[string, V]>V]>
} = import TRTR.const toEntriesWithPrefix: anytoEntriesWithPrefix