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weekly 2023-10-09

· 2 min read

In August 2023, MoonBit underwent Alpha testing. This post aims to introduce recent updates to MoonBit's language and toolchain, along with applications developed using MoonBit.

Changes in MoonBit Language​

1. MoonBit Introduces a new handwriting Syntax Parser​

MoonBit introduces a new handwriting syntax parser which brings better error recovery. For example, in the case below, even if an error is prompted due to x not being assigned, it will not affect the automatic completion function of y in the following two lines of code.

引入语法分析器|690x243

2. MoonBit Standard Library in Development​

To facilitate users in developing larger scale projects, MoonBit is currently developing a standard library, which is expected to be merged in the near future.

The first batch of the externally available standard library is expected to include the following containers: Stack, Queue, Deque, and Heap.

Stack

func init {
  let stack = Stack::make()
  repeat(5, fn(i) { stack.push(i + 1) })
  while stack.is_empty().not() {
    print(stack.peek())
    stack.pop()
  }
  print('\n')
}

Output：54321

Queue

func init {
  let queue = Queue::make()
  repeat(5, fn(i) { queue.push(i + 1) })
  while queue.is_empty().not() {
    print(queue.peek())
    queue.pop()
  }
  print('\n')
}

Output：12345

Heap

func init {
  let heap = MinHeap::make()
  heap.push(3)
  heap.push(1)
  heap.push(4)
  heap.push(2)
  heap.push(5)
  while heap.is_empty().not() {
    print(heap.peek())
    heap.pop()
  }
  print('\n')
}

Output：12345

3. Integration with the forthcoming Wasm GC proposal​

The Wasm GC standard implementation is progressing rapidly and is expected to be shipped soon.

Changes in MoonBit's IDE​

1. IDE supports utf8 string output​

MoonBit IDE supports utf8 string print output, for example:

func init {
  println("你好")
  println("مرحبا moonbit")
}

The results are as follows:

运行结果|679x500