zwitch

WebJar for zwitch

License	MIT
GroupId	org.webjars.npm
ArtifactId	zwitch
Last Version	1.0.5
Release Date	Aug 24, 2020
Type	jar
Description	zwitch WebJar for zwitch
Project URL	https://www.webjars.org
Source Code Management	https://github.com/wooorm/zwitch

Download zwitch

Filename	Size
zwitch-1.0.5.pom
zwitch-1.0.5.jar	5 KB
zwitch-1.0.5-sources.jar	22 bytes
zwitch-1.0.5-javadoc.jar	22 bytes

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/org.webjars.npm/zwitch/ -->
<dependency>
    <groupId>org.webjars.npm</groupId>
    <artifactId>zwitch</artifactId>
    <version>1.0.5</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/org.webjars.npm/zwitch/
implementation 'org.webjars.npm:zwitch:1.0.5'

Gradle Kotlin

// https://jarcasting.com/artifacts/org.webjars.npm/zwitch/
implementation ("org.webjars.npm:zwitch:1.0.5")

Apache Buildr

'org.webjars.npm:zwitch:jar:1.0.5'

Apache Ivy

<dependency org="org.webjars.npm" name="zwitch" rev="1.0.5">
  <artifact name="zwitch" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='org.webjars.npm', module='zwitch', version='1.0.5')
)

Scala SBT

libraryDependencies += "org.webjars.npm" % "zwitch" % "1.0.5"

Leiningen

[org.webjars.npm/zwitch "1.0.5"]

Dependencies

There are no dependencies for this project. It is a standalone project that does not depend on any other jars.

Project Modules

There are no modules declared in this project.

zwitch

Handle values based on a property.

Install

npm:

npm install zwitch

Use

var zwitch = require('zwitch')

var handle = zwitch('type')

handle.invalid = invalid
handle.unknown = unknown
handle.handlers.alpha = handle

handle({type: 'alpha'})

Or, with a switch statement:

function handle(value) {
  var fn

  if (!value || typeof value !== 'object' || !('type' in value)) {
    fn = invalid
  } else {
    switch (value.type) {
      case 'alpha':
        fn = handle
        break
      default:
        fn = unknown
        break
    }
  }

  return fn.apply(this, arguments)
}

handle({type: 'alpha'})

API

zwitch(key[, options])

Create a functional switch, based on a key (string).

options

Options can be omitted and added later to one.

• handlers (Object.<Function>, optional) — Object mapping values to handle, stored on one.handlers
• invalid (Function, optional) — Handle values without key, stored on one.invalid
• unknown (Function, optional) — Handle values with an unhandled key, stored on one.unknown

Returns

Function — See one.

one(value[, rest...])

Handle one value. Based on the bound key, a respective handler will be invoked. If value is not an object, or doesn’t have a key property, the special “invalid” handler will be invoked. If value has an unknown key, the special “unknown” handler will be invoked.

All arguments, and the context object, are passed through to the handler, and it’s result is returned.

one.handlers

Map of handlers (Object.<string, Function>).

one.invalid

Special handler invoked if a value doesn’t have a key property. If not set, undefined is returned for invalid values.

one.unknown

Special handler invoked if a value does not have a matching handler. If not set, undefined is returned for unknown values.

function handler(value[, rest...])

Handle one value.

Related

• mapz — Functional map

License

MIT © Titus Wormer

Versions

Version
1.0.5 Aug 24, 2020
1.0.4 Oct 4, 2019