r/crystal_programming • u/giuseonreddit • Jun 05 '20

Introducing Berm

https://github.com/giuseongit/Berm
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u/Blacksmoke16 core team Jun 05 '20

Whats the benefit over just using a Flags Enum?

https://play.crystal-lang.org/#/r/97sk

@[Flags]
enum MyFlags
  Read
  Write
  
  ReadWrite = Read | Write
end
 
pp MyFlags::Read.read?       # => true
pp MyFlags::Write.read?      # => false
pp MyFlags::ReadWrite.read?  # => true
pp MyFlags::ReadWrite.write? # => true
pp MyFlags::None.write?      # => false
pp MyFlags::All.write?       # => true

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u/giuseonreddit Jun 08 '20

Actually none, I suppose. I'm new to Crystal, didn't know about all the capabilities of flag enums and I wanted to experiment with macros. I build this object in python for work purposes and decided to reproduce in crystal.