dfcn.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}
{* 07apr2005}{...}
{cmd:help dfcn}
{hline}

{title:Title}

{pstd}
{hi:[U] 24.2.5 Specifying particular dates (date literals)}


{title:Syntax}

{p 8 19 2}{it:...} {cmd:d(}{it:constant}{cmd:)} {it:...}


{title:Remarks}

{pstd}
Function description:

{p 4 19 2}Argument:{space 2}a day followed by a month followed by a 4-digit year{p_end}
{p 4 19 2}Returns:{space 3}{cmd:%d} ({cmd:%td}) date (0=01jan1960, etc.){p_end}


{pstd}
See {help dates} and {help tdates} for an explanation of dates.
See {help dfmt} and {help tfmt} for an explanation of date and
time-series formats.


{title:Examples}

{phang}{cmd:. regress} {it:...} {cmd:if hdate > d(1mar1998)}

{phang}{cmd:. tabulate} {it:...} {cmd:if bdate > d(15 january 1980)}

{phang}{cmd:. logistic} {it:...} {cmd:if expdate < d(15.12.2001)}


{title:Also see}

{psee}
Manual:  {bf:[D] functions},{break}
{bf:[U] 24 Dealing with dates},{break}
{bf:[U] 24.2.5 Specifying particular dates (date literals)},{break}
{bf:[U] 24.3.2 Specifying particular dates (date literals)}

{psee}
Online:  {help dates},
{help dfmt},
{helpb format},
{help functions},
{help mdyfcn},
{help tdates},
{help tfcn},
{help tfmt}
{p_end}