Feature D C C++ C# Java Garbage Collection Yes No No Yes Yes Functions Function delegates Yes No No Yes No Function overloading Yes No Yes Yes Yes Out function parameters Yes Yes Yes Yes No Nested functions Yes No No No No Function literals Yes No No No No Dynamic closures Yes No No No No Arrays Lightweight arrays Yes Yes Yes No No Resizeable arrays Yes No No No No Arrays of bits Yes No No No No Built-in strings Yes No No Yes Yes Array slicing Yes No No No No Array bounds checking Yes No No Yes Yes Associative arrays Yes No No No No Strong typedefs Yes No No No No String switches Yes No No Yes No Aliases Yes Yes Yes No No OOP Object Oriented Yes No Yes Yes Yes Multiple Inheritance No No Yes No No Interfaces Yes No Yes Yes Yes Operator overloading Yes No Yes Yes No Modules Yes No Yes Yes Yes Dynamic class loading No No No Yes Yes Nested classes Yes Yes Yes Yes Yes Inner (adaptor) classes No No No No Yes Covariant return types Yes No Yes No No Properties Yes No No Yes No Performance Inline assembler Yes Yes Yes No No Direct access to hardware Yes Yes Yes No No Lightweight objects Yes Yes Yes Yes No Explicit memory allocation control Yes Yes Yes No No Independent of VM Yes Yes Yes No No Direct native code gen Yes Yes Yes No No Generic Programming Templates Yes No Yes No No Mixins Yes No No No No typeof Yes No No Yes No foreach Yes No No Yes No Constraints Yes No No No No Reliability Contract Programming Yes No No No No Unit testing Yes No No No No Static construction order Yes No No Yes Yes Guaranteed initialization Yes No No Yes Yes RAII (automatic destructors) Yes No Yes Yes No Exception handling Yes No Yes Yes Yes try-catch-finally blocks Yes No No Yes Yes Thread synchronization primitives Yes No No Yes Yes Compatibility C-style syntax Yes Yes Yes Yes Yes Enumerated types Yes Yes Yes Yes No Support all C types Yes Yes No No No 80 bit floating point Yes Yes Yes No No Complex and Imaginary Yes Yes No No No Direct access to C Yes Yes Yes No No Use existing debuggers Yes Yes Yes No No Struct member alignment control Yes No No No No Generates standard object files Yes Yes Yes No No Macro text preprocessor No Yes Yes No No Other Conditional compilation Yes Yes Yes Yes No Unicode source text Yes Yes Yes Yes Yes
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