Online COBOL to Gleam Converter
Click to select or drop your input code file here.
You can also type the input code below.
How to use this tool?
This free online converter lets you convert code from COBOL to Gleam in a click of a button. To use this converter, take the following steps -
- Type or paste your COBOL code in the input box.
- Click the convert button.
- The resulting Gleam code from the conversion will be displayed in the output box.
Key differences between COBOL and Gleam
| Characteristic | COBOL | Gleam |
|---|---|---|
| Syntax | Verbose, English-like syntax designed for readability and business logic. | Concise, modern syntax inspired by ML-family languages, designed for clarity and safety. |
| Paradigm | Primarily procedural and imperative. | Functional, with strong emphasis on immutability and pure functions. |
| Typing | Weakly typed, with limited compile-time type checking. | Statically and strongly typed, with a robust type system and type inference. |
| Performance | Optimized for batch processing and transaction-heavy workloads on mainframes. | Compiles to Erlang BEAM bytecode, offering good concurrency and reliability, but not focused on raw computational speed. |
| Libraries and frameworks | Limited modern libraries; mostly legacy codebases and mainframe integrations. | Growing ecosystem, can use Erlang and Elixir libraries, but native Gleam libraries are still limited. |
| Community and support | Large legacy community, strong support in enterprise and financial sectors, but aging. | Small but active and growing open-source community, mostly enthusiasts and early adopters. |
| Learning curve | Steep for modern developers due to outdated paradigms and tooling. | Gentle for those familiar with functional programming; modern tooling and documentation. |
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