Add a custom Pygments lexer plug-in for Wren syntax highlighting, update contributing docs with setup instructions for the lexer, and switch every `:::dart` annotation across all doc/site markdown files to `:::wren` so code examples render with the correct language grammar.
194 B
194 B
^title Null Class ^category core
Methods
! operator
Returns true, since null is considered false.
:::wren
System.print(!null) // "true".