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observ-array
Advanced tools
An array containing observable values
An ObservArray
is an observable version of an array, every
mutation of the array or mutation of an observable element in
the array will cause the ObservArray
to emit a new changed
plain javascript array.
var ObservArray = require("observ-array")
var ObservStruct = require("observ-struct")
var Observ = require("observ")
var uuid = require("uuid")
function createTodo(title) {
return ObservStruct({
id: uuid(),
title: Observ(title || ""),
completed: Observ(false)
})
}
var state = ObservStruct({
todos: ObservArray([
createTodo("some todo"),
createTodo("some other todo")
])
})
state(function (currState) {
// currState.todos is a plain javascript todo
// currState.todos[0] is a plain javascript value
currState.todos.forEach(function (todo, index) {
console.log("todo", todo.title, index)
})
})
state.todos.get(0).title.set("some new title")
state.todos.push(createTodo("another todo"))
Batch changes together with transactions.
var array = ObservArray([ Observ("foo"), Observ("bar") ])
var removeListener = array(handleChange)
array.transaction(function(rawList) {
rawList.push(Observ("foobar"))
rawList.splice(1, 1, Observ("baz"), Observ("bazbar"))
rawList.unshift(Observ("foobaz"))
rawList[6] = Observ("foobarbaz")
})
function handleChange(value) {
// this will only be called once
// changes are batched into a single diff
value._diff //= [ [1,1,"baz","bazbar","foobar", , "foobarbaz"],
// [0,0,"foobaz"] ]
}
npm install observ-array
FAQs
An array containing observable values
The npm package observ-array receives a total of 155 weekly downloads. As such, observ-array popularity was classified as not popular.
We found that observ-array demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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