All Questions
18 questions
1
vote
2
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7k
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Will compiled python code be as fast as compiled C++ code?
I know that Python is an interpreted language and that c++ is a compiled one, or at least I like to think that I've understood some of their differences.
Although C++ is apparently faster than ...
- 79
4
votes
4
answers
2k
views
Ahead-of-time compilation to native machine code of dynamically typed languages
It is my understanding that:
It's particularly difficult to compile ahead of time, to efficient native machine code, a dynamically typed language like Python.
Largely as a result of the above, the ...
3
votes
2
answers
1k
views
Representing a structure/tuple type with Hindley Milner Type Inference
I'm writing a really simple interpreted object oriented programming language with a C-like syntax. I've been looking into type inference and I've found a few implementations of the 'Hindley-Milner ...
0
votes
2
answers
300
views
How do interpreters and VM print?
While direct Language-Assembly compilers generate the code required to perform specific task for the given platform, how do interpreters do it?
Abstract example
The following pseudo-code...
printf(&...
-7
votes
1
answer
130
views
Why we need compile PyQt before use it on Mac？
Why we need compile PyQt rather than simply using 'pip install' to put PyQt to my package repository? What happened during the compiling? Can I compiled PyQt once but allow many Macs through share ...
- 101
26
votes
2
answers
1k
views
What semantic features of Python (and other dynamic languages) contribute to its slowness?
I don't know very well Python. I'm trying to understand more precisely what exact features of dynamic languages (à la Python, Lua, Scheme, Perl, Ruby, ....) are forcing their implementations to be ...
22
votes
1
answer
3k
views
Why does the documentation on some languages say "equivalent to" rather than "is"?
Why does the documentation on some languages say "equivalent to" rather than "is"?
For example, the Python Docs say
itertools.chain(*iterables)
...
Equivalent to:
def chain(*...
- 339
8
votes
1
answer
5k
views
How are scripting languages compiled?
I know the term "scripting languages" is just a subset of programming languages, but I want to refer to programming languages such as Python and Ruby among others.
First of all, why don't we need a ...
- 251
11
votes
3
answers
8k
views
Why does Python need both a compiler and an interpreter?
I can understand the fact that Java needs both a compiler and an interpreter. It compiles source code to bytecode and then a virtual machine (on Windows, on Linux, on Android, etc.) translates that ...
- 119
4
votes
2
answers
5k
views
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
2
votes
1
answer
507
views
Allow user to enter DSL, rules or code?
I have a python library that allows me to define rules by chaining inputs and outputs of functions ( producer(grep(count( [print(),log() ] )))
This functions define a pipeline from left to right.
...
- 123
9
votes
4
answers
13k
views
How does Python compile some its code in C?
I read that some constructs of Python are more efficient because they are compiled in C.
https://wiki.python.org/moin/PythonSpeed/PerformanceTips
Some of the examples used were map() and filter(). I ...
- 721
37
votes
3
answers
35k
views
Why isn't there a python compiler to native machine code?
As I understand, the cause of the speed difference between compiled languages and python is, that the first compiles code all way to the native machine's code, whereas python compiles to python ...
- 481
12
votes
3
answers
2k
views
What are the challenges related to typing in writing a compiler for a dynamically typed language?
In this talk, Guido van Rossum is talking (27:30) about attempts to write a compiler for Python code, commenting on it saying:
turns out it's not so easy to write a compiler that maintains all the
...
- 309
35
votes
5
answers
132k
views
Why doesn't Python need a compiler?
Just wondering (now that I've started with C++ which needs a compiler) why Python doesn't need a compiler?
I just enter the code, save it as an exec, and run it. In C++ I have to make builds and all ...
- 1,249