All Questions
7 questions
0votes
1answer
2kviews
Java: Is there a performance difference between variable assignment vs. inline usage?
Is there any performance detriment to assigning variables vs using them inline. I'm guessing this WOULD be worse if a method was returning primitive and I was 'boxing' it (e.g. method returning int, ...
- 311
0votes
2answers
2kviews
Why are some languages called platform dependent if I can always share the source code?
I was reading about erlang when I read that it is platform-independent, using BEAM as the VM, now I understand that a VM compiles the byte code to machine code and this makes that language machine-...
- 129
5votes
4answers
1kviews
How does Java improve over C++ in the area of portability?
I was reading through a Java book by author Herbert Schildt and he writes how the advantage of Java over C++ in portabilaty is that while C++ can be run anywhere, it still requires each program to be ...
- 1,569
11votes
8answers
2kviews
What stops C from being compiled/interpreted/JIT'ed?
Java is often praised for its amazing portability, which I presume is because of the JVM. My question is what stops C from being being compiled/interpreted/JIT'ed.., if so, C can also be write once ...
- 223
4votes
2answers
5kviews
Difference between PyPy and JVM
From my understanding the default Python interpreter(CPython) compiles source code into bytecode and then interprets the bytecode into machine code. PyPy on the other hand makes use of JIT to optimize ...
- 141
1vote
2answers
691views
Is it possible to implement a native compiler for a 'managed language' such as Java?
In most cases, it is possible to create both a native compiler and an interpreter for a programming language. The compiler would simply convert the source code to machine code, and the interpreter ...
- 21.5k
3votes
2answers
3kviews
Converting ANTLR AST to Java bytecode using ASM
I am currently trying to write my own compiler, targeting the JVM. I have completed the parsing step using Java classes generated by ANTLR, and have an AST of the source code to work from (An ANTLR "...
- 31
