Instead of deciding between Python or Lisp for a programming intro course...What about an intro course that uses *BOTH*? Good idea?
zipher
dreamingforward at gmail.com
Tue May 12 18:00:05 EDT 2015
On Tuesday, May 12, 2015 at 12:57:48 PM UTC-5, Rustom Mody wrote:
> On Tuesday, May 12, 2015 at 10:45:39 PM UTC+5:30, Stefan Ram wrote:
> > Rob Gaddi writes:
> > >Is that a true array or a linked list? "It's a high level language,
> > >that's just an implementation detail." Yes, but it's an implementation
> > >detail that determines whether even the simple act of looking up element
> > >n is O(1) or O(n).
> >
> > The complexity is given in the documentation of high-level languages.
> >
> > For example, from the documentation of the Java standard library:
> >
> > »This implementation provides constant-time performance
> > for the basic operations (get and put),« (java.util.HashMap)
> >
> > C++:
> >
> > Section 23.2.1 specifies the complexity, such as »compile time«,
> > »constant«, »linear« for container operations.
> >
> > But the abstraction mechanisms (templates, polymorphism)
> > often allow one to change the implementation quite easily.
>> This is regarded in some circles as one of the big open problems in CS
> https://existentialtype.wordpress.com/2014/09/28/structure-and-efficiency-of-computer-programs/
> [and the position paper therein]
> viz how to integrate the elegance of high-level languages
> with the precision of complexity analysis of machine language
The answer is you don't. You *don't* because you can't. And you *can't* because you don't know what you want to do yet.
That is why you have very high-level languages that allow you to rapidly prototype ideas, test them, and then, depending all the other constraints, move them to lower-level language implementations.
So don't try it. Everyone gets it wrong and now we have a plethora of languages which all do the same thing, without really knowing what they want as an overarching design or purpose.
Mark
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