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Crystal vs Groovy: What are the differences?
Developers describe Crystal as "Fast as C, slick as Ruby". Crystal is a programming language that resembles Ruby but compiles to native code and tries to be much more efficient, at the cost of disallowing certain dynamic aspects of Ruby. On the other hand, Groovy is detailed as "A dynamic language for the Java platform". Groovy builds upon the strengths of Java but has additional power features inspired by languages like Python, Ruby and Smalltalk. It makes modern programming features available to Java developers with almost-zero learning curve.
Crystal and Groovy can be categorized as "Languages" tools.
"Compiles to efficient native code" is the top reason why over 27 developers like Crystal, while over 38 developers mention "Java platform" as the leading cause for choosing Groovy.
Crystal and Groovy are both open source tools. Crystal with 13.5K GitHub stars and 1.05K forks on GitHub appears to be more popular than Groovy with 1.49K GitHub stars and 414 GitHub forks.
According to the StackShare community, Groovy has a broader approval, being mentioned in 79 company stacks & 73 developers stacks; compared to Crystal, which is listed in 7 company stacks and 14 developer stacks.
Pros of Crystal
- Compiles to efficient native code38
- Ruby inspired syntax36
- Performance oriented - C-like speeds32
- Gem-like packages, called Shards23
- Can call C code using Crystal bindings20
- Super Fast18
- Typed Ruby <318
- Open Source17
- Minimal Runtime14
- Cute11
- Clean code9
- Concurrent9
- Productive9
- Great community4
- Feels like duck types, safe like static types2
- Null Safety2
- Type inference2
- Program compiled into a single binary2
- Powerful2
- Meta-Programming (via Macros)2
- Simplicity2
- Has builtin LLVM support library1
- Statically linked binaries that are simple to deploy1
- Fun to write1
- High-performance1
- Simple, minimal syntax1
- Compile time statically safe macros1
- Concise1
- Statically Safe Monkey Patching1
- Fibers1
- Spawn1
- Meta-programming1
- Cross-platform1
- Productivity1
- Elegant1
Pros of Groovy
- Java platform44
- Much more productive than java33
- Concise and readable29
- Very little code needed for complex tasks28
- Dynamic language22
- Nice dynamic syntax for the jvm13
- Very fast9
- Can work with JSON as an object7
- Easy to setup7
- Supports closures (lambdas)6
- Literal Collections6
- Syntactic sugar3
- Optional static typing3
- Developer Friendly2
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Cons of Crystal
- Small community13
- No windows support3
- No Oracle lib1
Cons of Groovy
- Groovy Code can be slower than Java Code3
- Absurd syntax1
- Objects cause stateful/heap mess1
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What is Crystal?
What is Groovy?
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