how do I write two dimensional array in kotlin in php we can kotlinlang #announcements

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Title

mending3

11/23/2019, 3:59 PM

how do I write two dimensional array in kotlin? in php we can write it very easily, such as

$arr = [
    [
        "name" => "john"
    ],
    [
        "name" => "michael"
    ]
];

how do I achieve the above?

Mark Murphy

11/23/2019, 4:15 PM

arrayOf(arrayOf(...), arrayOf(...))

, where

...

is what you want in the inner arrays

Shawn

11/23/2019, 4:16 PM

You’ll need mapOf for associative arrays

mending3

11/23/2019, 4:27 PM

excuse me, gosh... really bother tho. wish the kotlin team adopt the square bracket notation just like php does

Shawn

11/23/2019, 4:35 PM

listOf(
  mapOf(“name” to “John”),
  mapOf(“name” to “michael”)
)

But like, don’t do that. Don’t write PHP in Kotlin. You probably want to define a Person data class or something similar here

☝️ 7

mending3

11/23/2019, 4:45 PM

how do I define the data class in this regard?

would you show me the complete code of this?

Mark Murphy

11/23/2019, 4:46 PM

data class Person(val name: String)

listOf(Person("John"), Person("michael"))

mending3

11/23/2019, 4:49 PM

@Mark Murphy finally, the light is shed

💡 1

thank you

Shawn

11/23/2019, 4:54 PM

You should probably have a look at the docs. https://kotlinlang.org/docs/reference/data-classes.html

I would also recommend going through the Koans https://kotlinlang.org/docs/tutorials/koans.html

Matteo Mirk

11/25/2019, 12:44 PM

just for fun, trying to bend the language you could get close to square brackets notation: https://pl.kotl.in/yzsMKPkcB

👀 1

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