Three ways to get a task `tasks foo ` `tasks named foo get ` kotlinlang #getting-started

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Title

r

robnik

05/22/2019, 8:39 AM

Three ways to get a task:

tasks["foo"]

,

tasks.named("foo").get()

,

tasks.getByName("foo")

. I guess the first is extra in Kotlin, because the language allows the

[]

syntax for

get

, but is there a difference between the second and third?

m

marstran

05/22/2019, 8:41 AM

What's the type of

tasks

? Where is

named

and

getByName

coming from?

r

robnik

05/22/2019, 8:43 AM

Not sure... it's at the top level of by build script. Maybe this is because I'm using Kotlin.

m

marstran

05/22/2019, 8:43 AM

Ah, so it's the Gradle DSL?

r

robnik

05/22/2019, 8:43 AM

TaskContainer

I think.

m

marstran

05/22/2019, 8:44 AM

Sure, that's part of the Gradle DSL. Not the Kotlin stdlib. 😉

r

robnik

05/22/2019, 8:45 AM

It looks like both

named

and

getByName

are defined in

org.gradle...

classes. One returns the task, and the other a "provider". Not sure what the purpose is.

m

marstran

05/22/2019, 8:48 AM

You should look them up in the API doc

r

robnik

05/22/2019, 8:52 AM

Do you mean this? https://docs.gradle.org/current/javadoc/org/gradle/api/tasks/TaskCollection.html

They both say they fail if there is no such named object, so I don't see a meaningful difference between the two. Maybe the return type difference matters more for some reason in Groovy.

s

snowe

05/22/2019, 3:27 PM

A better place to ask is #gradle

or in the Gradle Community slack in the #kotlin-dsl channel

r

robnik

05/22/2019, 4:42 PM

Ah, thanks. Duh, I didn't notice I posted in wrong channel.

n

Nikky

05/24/2019, 8:10 PM

getByName allows you to pass a type like so

tasks.getByName<TaskType>("taskname") { 
  // configuration here
}

2 Views

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