Ruby 4.0正式发布！推出全新编译器+原生隔离环境，网友：没有它圣诞都不完整

Core Insights - Ruby language celebrates its 30th anniversary with the release of version 4.0, introducing significant updates for developers [1] Group 1: Major Updates - Introduction of ZJIT, a new Just-In-Time compiler designed to enhance performance beyond the existing YJIT compiler by utilizing Static Single Assignment (SSA) architecture [5][9] - Ruby::Box is introduced to isolate code execution environments, addressing the "global pollution" issue and enhancing security and modularity in applications [14][19] - Ractor API has been redesigned to improve communication and safety in parallel programming, introducing Ractor::Port for directed message delivery [21][22][25] Group 2: Technical Enhancements - ZJIT allows for global data flow analysis and optimizations like constant folding and dead code elimination, which were challenging for YJIT [9][12] - Ruby::Box ensures that modifications within a Box do not affect the external environment, providing a robust solution for large projects [19][20] - Ractor::Port creates a one-way communication channel, preventing message theft and simplifying synchronization [22][25] Group 3: Additional Features - Syntax improvements for better readability, such as allowing logical operators at the beginning of a new line [28] - Core libraries like Set and Pathname have been upgraded to core status, eliminating the need for manual require statements [28] - Enhanced debugging experience with ErrorHighlight feature, which now highlights both the error line and method definition line [28]