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@schungx schungx released this 05 Aug 14:56
v0.18.1
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Version 0.18.1 released to crates.io

This version adds:

  • Anonymous functions (in Rust closure syntax). Simplifies creation of single-use ad-hoc functions.
  • Currying of function pointers.
  • Closures - auto-currying of anonymous functions to capture shared variables from the external scope. Use the no_closure feature to disable sharing values and capturing.
  • Binding the this pointer in a function pointer call.
  • Capturing call scope via func!(...) syntax.

New features

  • call can now be called function-call style for function pointers - this is to handle builds with no_object.
  • Reserve language keywords, such as print, eval, call, this etc.
  • x.call(f, ...) allows binding x to this for the function referenced by the function pointer f.
  • Anonymous functions are supported in the syntax of a Rust closure, e.g. |x, y, z| x + y - z.
  • Custom syntax now works even without the internals feature.
  • Currying of function pointers is supported via the new curry keyword.
  • Automatic currying of anonymous functions to capture shared variables from the external scope.
  • Capturing of the calling scope for function call via the func!(...) syntax.
  • Module::set_indexer_get_set_fn is added as a shorthand of both Module::set_indexer_get_fn and Module::set_indexer_set_fn.
  • New unicode-xid-ident feature to allow Unicode Standard Annex #31 for identifiers.
  • Scope::iter_raw returns an iterator with a reference to the underlying Dynamic value (which may be shared).

Breaking changes

  • Language keywords are now reserved (even when disabled) and they can no longer be used as variable names.
  • Function signature for defining custom syntax is simplified.
  • Engine::register_raw_fn_XXX API shortcuts are removed.
  • PackagesCollection::get_fn, PackagesCollection::contains_fn, Module::get_fn and Module::contains_fn now take an additional public_only parameter indicating whether only public functions are accepted.
  • The iterator returned by Scope::iter now contains a clone of the Dynamic value (unshared).
  • Engine::load_package takes any type that is Into<PackageLibrary>.
  • Error in Engine::register_custom_syntax is no longer Box-ed.

Housekeeping

  • Most compilation warnings are eliminated via feature gates.
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