New Gleam Just Dropped
ThePrimeTime・26 minutes read
Gleam 1.2.0 release focuses on enhancing the language server, improving error messages, and adding features like exhaustiveness checking for assert syntax and autocompletion of types and values. The compiler now moves on to the next definition in the module when encountering an error, increasing the language server's responsiveness and accuracy, benefiting users with better error handling and program understanding.
Insights
- The Gleam 1.2.0 release focuses on improving the language server and developer experience by addressing issues with fault-tolerant compilation, enhancing error handling, and providing better code formatting options.
- The use of assert, stringify function, Panic Expressions, and to-do functions in Gleam is crucial for error identification, program crash handling, and improving overall error messaging, making it a preferred choice over traditional error-handling methods like throw.
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What is Gleam?
A language for Erlang VM and JavaScript runtimes.
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Summary
00:00
"Gleam 1.2.0 Release Enhances Developer Experience"
- Gleam is a conceptual language that the speaker finds interesting but challenging to prioritize due to other preferences.
- Published on May 27, 2024, by Louise Pul, Gleam is a typesafe scalable language for Erlang virtual machine and JavaScript runtimes.
- Gleam 1.2.0 release focuses on enhancing the language server and developer experience, emphasizing fault-tolerant compilation.
- Gleam's compiler traditionally halts immediately upon encountering a compile-time error, presenting only the first error to the programmer.
- This halting behavior poses significant issues for The Gleam language server, affecting its functionality in text editors like Neovim, Helix Zed, and VS Code.
- The compiler now moves on to the next definition in the module when encountering an error, improving the language server's responsiveness and accuracy.
- The language server now autocompletes types and values in import statements, allowing users to hover over them for documentation.
- Gleam's pipe operator can now be used to pipe functions together on a single line, enhancing code formatting options.
- Improved error messages for use expressions in Gleam help clarify type errors and provide specific examples for better understanding.
- Gleam now features exhaustiveness checking on assert syntax, catching redundant patterns and enhancing crash mistake detection with Tod and panic expressions.
13:00
"Assert and Gleam aid in program errors"
- The program output includes details on the current index, columns, and row.
- Assert crashes the program, providing a comprehensive state of the program.
- Uncaught exceptions lead to program termination, but assert provides detailed information.
- The use of assert and stringify function aids in error identification and program state understanding.
- Assert is favored over throw due to its better abstraction and error handling.
- Assert is crucial in identifying and addressing program errors and mismatches.
- Gleam's Panic Expressions and to-do functions aid in program crash and error handling.
- Gleam's build tool prevents module overwriting and offers improved error messages.
- Gleam's language server offers code actions for redundant pattern matching and JavaScript errors.
