in ``` val A = StringBuilder string = val B = StringBuilder

Question

in ``` val A = StringBuilder string = val B = StringBuilder content = ``` what is the difference between `string` and `content` like do both do the exact same thing

tddmonkey · Answer

I don t see a constructor with that signature

Shawn · Answer

it s documented on this page <https kotlinlang org api latest jvm stdlib kotlin text string builder >

Shawn · Answer

but looking at the definition on my machine Kotlin JVM it s just a typealias for the java stringbuilder which doesn t define a `content` param

tddmonkey · Answer

Unless I m missing something I still don t see a constructor takes 2 strings called `content` and `string`

Shawn A · Answer

Looks like its for Kotlin js

Smallville7123 · Answer

```val A = StringBuilder string = val B = StringBuilder content = ```

Shawn · Answer

ahh I think that might be what it is

Shawn · Answer

there s a StringBuilder ctor that takes a CharSequence called `content` that s on Common though

Shawn · Answer

`StringBuilder content String ` is just a JS thing it looks like

Shawn · Answer

``` StringBuilder content CharSequence StringBuilder string String ``` for everyone else

Shawn A · Answer

I ve been confused more than a few times by the inclusion of `js` stuff in the docs

Shawn · Answer

yeah I personally only use kotlin jvm so the docs have definitely tripped me up cause I forget to look at the indicators

Smallville7123 · Answer

but whats the difference between the two

Shawn · Answer

One constructor takes a CharSequence the other a String

Smallville7123 · Answer

other than their types

Smallville7123 · Answer

as if they are named differently then they gotta to something different right

Shawn · Answer

I mean the CharSequence ctor probably just does whatever it needs to do to load the chars in the CharSequence into whatever mechanism stores string data

Shawn · Answer

maybe that s a conversion to String

Shawn · Answer

the parameters are named differently likely because well you don t want to call a CharSequence that isn t necessarily a `String` `string`

Shawn · Answer

`content` is a fine more generic name

Smallville7123 · Answer

then why not name both as `content` lol

Shawn · Answer

convention probably

Shawn · Answer

the java ctor takes a param named `str` `string` is a natural extension of that

Smallville7123 · Answer

ok lol

Shawn · Answer

the `content` param makes it noticeable that that constructor takes in not String but instead anything that implements CharSequence

Smallville7123 · Answer

what does `ensureCapacity` do

Shawn · Answer

lol

Shawn · Answer

I m not sure tbh it s not documented and only available on Native

Shawn · Answer

Are you writing K N

Smallville7123 · Answer

yes

Shawn · Answer

It may be an allocation thing but you might be better served asking nicely in < C3SGXARS6|kotlin native>

Smallville7123 · Answer

ok

karelpeeters · Answer

Java has it too I m not sure why they didn t include that in the Kotlin version