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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">The following following should declare an array with no elements:
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<div> string args[];</div>
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<div>- Mike </div>
<div>--</div>
<div>Michael Wilde</div>
<div>Mathematics and Computer Science Computation Institute</div>
<div>Argonne National Laboratory The University of Chicago</div>
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<div id="divRpF590169" style="direction: ltr; "><font face="Tahoma" size="2" color="#000000"><b>From:</b> swift-user-bounces@ci.uchicago.edu [swift-user-bounces@ci.uchicago.edu] on behalf of Ketan Maheshwari [ketan@mcs.anl.gov]<br>
<b>Sent:</b> Monday, February 03, 2014 11:44 AM<br>
<b>To:</b> Swift User<br>
<b>Subject:</b> [Swift-user] empty array in Swift<br>
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<div dir="ltr">Hi,
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<div>I was working on a problem where user can pass a dynamic number of arguments to an app, including zero. </div>
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<div>A possible Swift script as follows:</div>
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<div>type file;</div>
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<div>app (file _out, file _err) anapp(file _exec, int _i, string _args[]){</div>
<div> sh @_exec _i _args stdout=@_out stderr=@_err;</div>
<div>}</div>
<div>string args[]=["any", "num", "args"]; # generated via a wrapper script</div>
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<div>file exec<"./echo.sh">;</div>
<div>foreach i in [0:9:1]{</div>
<div> file out <single_file_mapper; file=@strcat("outloc", "/", i, ".out")>;</div>
<div> file err <single_file_mapper; file=@strcat("outloc", "/", i, ".err")>;</div>
<div> (out,err) = anapp(exec, i, args);</div>
<div>}</div>
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<div>However, it seems that I cannot have an array with no elements:</div>
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<div>string args[]=[];</div>
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<div>In this case Swift complains:</div>
<div>Compile error in assignment at line 8: You cannot assign value of type [int] to a variable of type string[int]<br>
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<div>Which works when I say:</div>
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<div>string args[]=[""]</div>
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<div>However, it results in an array with one element.</div>
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<div>So, is there a way in Swift to have an array with zero elements?</div>
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<div>Thanks,</div>
<div>Ketan</div>
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