"a".[0] syntax is not working

[cometkim]

According to the ReScript manual, a string "a" can be converted to char 'a' by .[0]

To convert a String to a Char, use "a".[0]. To convert a Char to a String, use String.make(1, 'a').

but the syntax is not working in ReScript.

>>>> Start compiling
bsb: [1/5] src/Test.ast
FAILED: src/Test.ast

  Syntax error!
  /home/cometkim/Workspace/tmp/rescript-template-test-8/src/Test.res:1:13

  1 │ let a = "a".[0]
  2 │

  I'm not sure what to parse here when looking at "[".


  Syntax error!
  /home/cometkim/Workspace/tmp/rescript-template-test-8/src/Test.res:1:14

  1 │ let a = "a".[0]
  2 │

  consecutive statements on a line must be separated by ';' or a newline

bsb: [2/5] src/App-MyRescriptApp.cmj
FAILED: src/App-MyRescriptApp.cmj

I'm not sure it's a compiler bug or It is just a mistake. I'd like to update the docs to use String.unsafe_get instead.

[cometkim]

It's working on .re. I think it's a mistake while migrating docs from Reason. Is there a plan to support that syntax in the compiler? If so, Is it better to comment on it?

[IwanKaramazow]

@cometkim Thanks for the report! This fell under the radar, will be taken care of.

[chenglou]

Sorry forgot about this. Fixed the docs now. We won't be exposing a dedicated sugar for Char, especially since it's a disrecommended type (no unicode/utf-8, doesn't make sense in JS, etc.). Thanks for the report!