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google / codeworld

Educational computer programming environment using Haskell
http://code.world
Apache License 2.0
1.24k stars 197 forks source link

User-reported unhelpful error message #1638

Open codeworld-feedback opened 6 months ago

codeworld-feedback commented 6 months ago

Program: https://code.world/#P_SLJYh9LPeGUDY_uuHWytQ

Message:

program.hs:30:18: error:
    • Missing punctuation before this expression.
      Perhaps you forgot a comma, an operator, or a bracket.
    • To apply a function, add parentheses around the argument.
      For example: Grid(x)