mf_fileexists.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}
{* 01nov2004}{...}
{cmd:help mata fileexists()}
{hline}
{* index file processing}{...}
{* index fileexists()}{...}

{title:Title}

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


{title:Syntax}

{p 8 12 2}
{it:real scalar}
{cmd:fileexists(}{it:string scalar fn}{cmd:)}


{title:Description}

{p 4 4 2}
{cmd:fileexists(}{it:fn}{cmd:)}
returns 1 if file {it:fn} exists and is readable and returns 0 otherwise.


{title:Conformability}

    {cmd:fileexists(}{it:fn}{cmd:)}:
	      {it:fn}:  1 {it:x} 1
	   {it:result}: 1 {it:x} 1


{title:Diagnostics}

{p 4 4 2}
None.


{title:Source code}

{p 4 4 2}
{view fileexists.mata, adopath asis:fileexists.mata}


{title:Also see}

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

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