We have posted a new Fantom build.

This is mostly a much needed maintenance build.

But there are a few small language features...

You can now use once methods on a const class per proposal 2820. Note the caveats in the updated docs.

We've also made a subtle change in allowable function types. Previously you could only use This in a function type if the full function type was |This->Void| (for use in it-blocks method params). We've relaxed those rules to allow This to be used in any function parameter position, but only when the function type appears as a method parameter (which is covariantly safe).

Change Log

Build 1.0.76 (10 May 2021)

• Allow This to be in any func param position as method param
• Allow once methods to be used on const classes
• Add once as new fcode bitmask flag 0x80000
• BoolArray clear, eachTrue, getAndSet
• Int.clip, Float.clip
• dom: Elem.fromNative fix if already Elem instance
• domkit: SashBox.onSashResize
• WebClient.authBasic
• Minor enhancements to compilerDoc APIs
• 2488: Javascript - No warnings on func params
• 2820: Proposal: once methods on const classes

Hooray! Thanks! :D