[Swift-devel] Join function?

[Jonathan Monette]

I was just looking into how hard it would be to add an @join function to Swift that does what David describes.  I do not think it will be too difficult.  So if David wants to try I can help if he would like.

On Apr 3, 2012, at 1:40 PM, Michael Wilde wrote:

> You might be able to write strjoin() as a recursive Swift function. It would also be a good exercise for you to add it as a new primitive, David - as we are rather scanty n string and math functions.
> 
> - Mike
> 
> ----- Original Message -----
>> From: "David Kelly" <davidk at ci.uchicago.edu>
>> To: "Jonathan Monette" <jonmon at mcs.anl.gov>
>> Cc: "swift-devel at ci.uchicago.edu Devel" <swift-devel at ci.uchicago.edu>
>> Sent: Tuesday, April 3, 2012 1:33:06 PM
>> Subject: Re: [Swift-devel] Join function?
>> I think that would work, but it requires knowing the number of
>> elements.
>> 
>> ----- Original Message -----
>>> From: "Jonathan Monette" <jonmon at mcs.anl.gov>
>>> To: "David Kelly" <davidk at ci.uchicago.edu>
>>> Cc: "swift-devel at ci.uchicago.edu Devel"
>>> <swift-devel at ci.uchicago.edu>
>>> Sent: Tuesday, April 3, 2012 1:21:32 PM
>>> Subject: Re: [Swift-devel] Join function?
>>> So @strcat(a[0],":", a[1], ":", a[2], ":", a[3]); does not work?
>>> That
>>> is the only swift way I can think of to make it work. The only other
>>> approach is to use an app call to a perl/python script.
>>> 
>>> On Apr 3, 2012, at 1:02 PM, David Kelly wrote:
>>> 
>>>> Hello,
>>>> 
>>>> Is there a way to concatenate all elements of an array into a
>>>> single
>>>> string? I would also like to define a separator between elements.
>>>> I
>>>> was thinking of something similar to Perl's join function.
>>>> 
>>>> If I have:
>>>> 
>>>> string a[];
>>>> a[0] = "this";
>>>> a[1] = "is";
>>>> a[2] = "a";
>>>> a[3] = "test";
>>>> 
>>>> How can I get it into "this is a test" or "this:is:a:test"?
>>>> @strcat
>>>> returns a reference. I can tracef with %q and get
>>>> "[this,is,a,test]", but it doesn't give me any control over the
>>>> formatting as far as I know.
>>>> 
>>>> I could call a shell script to do this, just wondering if there
>>>> was
>>>> another way.
>>>> 
>>>> David
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> 
> -- 
> Michael Wilde
> Computation Institute, University of Chicago
> Mathematics and Computer Science Division
> Argonne National Laboratory
>