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Languages & runtimes · #crystal
Crystal macros let you generate getter methods at compile time, keeping code DRY while preserving static type safety.
Learn how to build a type‑safe CLI in Crystal using OptionParser. This guide covers flag parsing, positional arguments, error handling, and verification steps to ensure a reliable command‑line tool.
Crystal replaces Ruby's runtime metaprogramming with compile-time macros. Here's how JSON::Serializable and a small getter-generating macro work, what they cost, and how to verify expansions.
Learn how to diagnose and resolve NilRuntimeErrors in Crystal. This guide covers the use of --warn nilable, safe navigation with .try, and implementing robust nil guards.
Goal Determine how the Public folder’s Allow Anonymous Access setting behaves when a Crystal Reports Server is configured for both HTTP and HTTPS access. Context Crystal Reports 2021 introduced a dedicated Public folder for web‑exposed reports. The folder’s default configuration permits anonymous access unless the Allow Anonymous Access toggle is explicitly