[Swift-user] What system calls do the mappers use?

[Mihael Hategan]

They are in trunk. They should also be in 0.94.

You declare them as: 
  valueType[keyType] arrayName;
For example:
  int[string] a;
  a["one"] = 1;

Mihael

On Wed, 2013-03-20 at 16:04 -0500, Michael Wilde wrote:
> Lorenzo,
> 
> All Swift arrays are varying in size: you dont declare the array size in the declaration. Further, they can be sparse (because the implementation is in fact a hashtable).
> 
> Swift has code that supports user-level hashes by by declaring arrays with string instead of integer keys. I thought this made it to the User Guide but I see now that it did not. Its possible/likely thats because the code is not in trunk yet.
> 
> Can anyone on the devel team reply with the status of associative arrays?
> 
> Thanks,
> 
> - Mike
> 
> ----- Original Message -----
> > From: "Lorenzo Pesce" <lpesce at uchicago.edu>
> > To: "Michael Wilde" <wilde at mcs.anl.gov>
> > Cc: "Swift User Discussion List" <swift-user at ci.uchicago.edu>
> > Sent: Wednesday, March 20, 2013 3:43:19 PM
> > Subject: Re: [Swift-user] What system calls do the mappers use?
> > 
> > Can one make hashes of arrays in or arrays of arrays of different
> > sizes in swift?
> > e.g., and array of an array type of variable size?
> > 
> > On Mar 20, 2013, at 3:41 PM, Michael Wilde wrote:
> > 
> > > 
> > > Also, to answer your question more directly: "I dont know".  You
> > > can try to answer this by writing some very simple swift scripts
> > > that do the kinds of built-in mappings you are looking at, and use
> > > strace() wuth suitable filtering and grepping do see what Swift
> > > (via Java) is doing to implement the mapping.
> > > 
> > > Mihael may be able to point you to the Java classes that do the
> > > mapping to distill this process further.
> > > 
> > > - Mike
> > > 
> > > 
> > > ----- Original Message -----
> > >> From: "Lorenzo Pesce" <lpesce at uchicago.edu>
> > >> To: "Swift User Discussion List" <swift-user at ci.uchicago.edu>
> > >> Sent: Wednesday, March 20, 2013 3:27:05 PM
> > >> Subject: [Swift-user] What system calls do the mappers use?
> > >> 
> > >> Hi --
> > >> 
> > >> I am working with mappers that might be repeated thousands of
> > >> times
> > >> in each workflow run.
> > >> Lustre doesn't like that type of search when it is based on
> > >> approaches similar to "ls", on the other hand "find" works fine.
> > >> 
> > >> I could conceivably find a work around, but I would rather not
> > >> have
> > >> to do it.
> > >> 
> > >> Lorenzo
> > >> _______________________________________________
> > >> Swift-user mailing list
> > >> Swift-user at ci.uchicago.edu
> > >> https://lists.ci.uchicago.edu/cgi-bin/mailman/listinfo/swift-user
> > >> 
> > 
> > 
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