It looks like it has nullable (nilable) types [0]. So a variable cannot be nil unless it is explicitly marked as having a nilable type. [0] https://crystal-lan

It looks like it has nullable (nilable) types [0]. So a variable cannot be nil unless it is explicitly marked as having a nilable type. [0] https://crystal-lang.org/reference/syntax_and_semantics/type_grammar.html https://crystal-lang.org/reference/syntax_and_semantics/type...