Language Comparison Calculator

This tool accompanies a blog post about why we chose Rust for mobile development at FullStory. Each row represents one of the criteria we used for evaluating programming languages. It works like a spreadsheet, you can double-click any cell to change the value and update the calculated scores.

Criteria Descriptions

• Familiarity: Did we have existing experience with the language or would we need to train engineers or hire new engineers to develop in it?
• Learning Curve: How easy would it be for developers to learn this as a new language?
• Interference: Would use of the language in one library interfere with the use of the same language (or a different language) in our customer’s applications, including other libraries they may already be using?
• Performance: What’s the average performance of code written in this language?
• Size: What’s the size impact of this language on the framework we would deliver for our customers?
• Thread Safety: How well does this language handle thread safety?
• Memory Safety: How well does this language handle memory safety?
• Memory Control: What degree of control over memory allocation does this language provide?
• Flatbuffers: How easy is it to write code in this language that works with flatbuffers? How mature and optimized is the flatbuffer backend for this language?