mf_direxists.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{smcl}
{* 02nov2004}{...}
{cmd:help mata direxists()}
{hline}
{* index direxists()}{...}
{* index directories}{...}
{* index folders, see directories}{...}

{title:Title}

{p 4 4 2}
{bf:[M-5] direxists() -- Whether directory exists}


{title:Syntax}

{p 8 8 2}
{it:real scalar}
{cmd:direxists(}{it:string scalar dirname}{cmd:)}


{title:Description}

{p 4 4 2}
{cmd:direxists(}{it:dirname}{cmd:)}
returns 1 if {it:dirname} contains a valid path to a directory and returns 
0 otherwise.


{title:Conformability}

    {cmd:direxists(}{it:dirname}{cmd:)}:
	  {it:dirname}:  1 {it:x} 1
	   {it:result}:  1 {it:x} 1


{title:Diagnostics}

{p 4 4 2}
None.


{title:Source code}

{p 4 4 2}
Function is built-in.


{title:Also see}

{p 4 13 2}
Manual:  {hi:[M-5] direxists()}

{p 4 13 2}
Online:  help for 
{bf:{help m4_io:[M-4] io}}
{p_end}