Stack

Module Collections.Stacks

A stack has the logic of a pile of plates. First in, last out. With a stack, you’re only able to work on the top-most, most recently added item.

Immutable

Stacks.immutable creates an immutable stack of Interface Stacks.IStackImmutable


import { Stacks } from "https://unpkg.com/@ixfx/collections/bundle"

let s = Stacks.immutable();
s = s.push(`a`, `b`);   // Add two strings

// Peek looks at the top of the stack
// (ie most recently added)
s.peek; // `b`

// Remove item from top of stack
s = s.pop();
s.peek // `a`

Mutable

Stacks.mutable creates a mutable stack of Interface Stacks.IStackMutable


import { Stacks } from "https://unpkg.com/@ixfx/collections/bundle"

const s = Stacks.mutable();
s.push(`a`, `b`);
s.peek;  // `b`
s.pop(); // `b`
s.peek;  // `a`

Importing

// Sub module
import { Stacks } from "@ixfx/collections.js"
// Eg: Stacks.immutable();

// Whole module
import * as Collections from "@ixfx/collections.js"
// Eg: Collections.Stacks.immutable();

// From bundle
import { Collections } from "@ixfx"
// Eg: Collections.Stacks.immutable();

// And within your HTML's <HEAD> </HEAD> block:
<script type="importmap">{ "imports": { "@ixfx":"/ixfx/index.js", "@ixfx/": "/ixfx/" } }</script>

// Sub module from parent
import { Stacks } from "@ixfx/collections.js"
// Eg: Stacks.immutable();

// Whole parent module
import * as Collections from "@ixfx/collections.js"
// Eg: Collections.Stacks.immutable();

// From the bundle
import { Collections } from "@ixfx/bundle.js"
// Eg: Collections.Stacks.immutable();

// Sub module from parent
import { Stacks } from "https://unpkg.com/@ixfx/collections/bundle"
// Eg: Stacks.immutable();

// Whole parent module
import * as Collections from "https://unpkg.com/@ixfx/collections/bundle"
// Eg: Collections.Stacks.immutable();

// Single module from the bundle
import { Collections } from "https://unpkg.com/@ixfx/bundle"
// Eg: Collections.Stacks.immutable();