kc3-lang/kc3/doc/1_KC3/1.26_Named_block.en.md

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• Hash : 30c9375b
  Author : Thomas de Grivel
  Date : 2025-05-05T10:16:18
  

  block in functions
  

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ikc3> block :abc do
ikc3>   return 1
ikc3>   123
ikc3> end
1
ikc3> block :abc do
ikc3>   return_from :abc 1 + 1
ikc3>   123
ikc3> end
2

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• doc/1_KC3/1.26_Named_block.en.md

• # 1.26 Named block
  
  In KC3, a named block is a macro that allows you to do debranching returns.
  First you create a block using `block :name do ... end`, then using
  `return` or `return_from :name` you can return an abitrary value from
  the block, expressions after return are not executed.
  
  In the case where two blocks have the same name, the most inner block
  is selected for `return`.
  
  ## 1.26.1 Examples
  
  ```elixir
  ikc3> block :abc do
  ikc3>   return 1
  ikc3>   123
  ikc3> end
  1
  ikc3> block :abc do
  ikc3>   return_from :abc 1 + 1
  ikc3>   123
  ikc3> end
  2
  ```
  
  ---
  
  Top : [KC3 documentation](/doc/)
  
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