meaning of .*

jishnuhari25 · January 12, 2015, 02:48

Can any one pls tell meaing of ".*" . it has been used in many files .
for ex:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.2.2 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object epsilon;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 2 -3 0 0 0 0];

internalField uniform 0.01;

boundaryField
{
".*"

{
type calculated;
value uniform 0.01;
}
}

// ************************************************** *********************** //

nimasam · January 12, 2015, 06:46

means all patches

alexeym · January 12, 2015, 07:07

Hi,

To be more precise (as you can meet .* in other files without any connection to patches), it is regular expression, dot means "any character", star means "0 or more repetitions". So any string matches this pattern.

January 12, 2015, 06:46		#2
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,266 Blog Entries: 1 Rep Power: 24	means all patches __________________ My Personal Website (http://nimasamkhaniani.ir/) Telegram channel (https://t.me/cfd_foam)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Who can tell me what is the meaning of the macro in fluent UDF:C_PREMIXC_RATE(c,t)	ChenZhan	Fluent UDF and Scheme Programming	1	May 12, 2017 03:40
Meaning of Ychar and Ypmma	aylalisa	OpenFOAM Pre-Processing	2	October 20, 2013 05:49
What's meaning of UDF FUNCTION	zhaoxinyu	Fluent UDF and Scheme Programming	0	March 31, 2010 08:04
want to know meaning	Sangamesh	Siemens	0	May 15, 2007 05:15
What's the meaning of "combustion scalar"and....	cfdbeginner	CFX	0	November 27, 2003 09:02

January 12, 2015, 02:48	meaning of .*	#1
jishnuhari25 New Member JISHNU H Join Date: Nov 2014 Location: Kerala, India Posts: 20 Rep Power: 11	Can any one pls tell meaing of "." . it has been used in many files . for ex: /--------------------------------- C++ -----------------------------------\ \| ========= \| \| \| \\ / F ield \| OpenFOAM: The Open Source CFD Toolbox \| \| \\ / O peration \| Version: 2.2.2 \| \| \\ / A nd \| Web: www.OpenFOAM.org \| \| \\/ M anipulation \| \| \---------------------------------------------------------------------------/ FoamFile { version 2.0; format ascii; class volScalarField; object epsilon; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // dimensions [0 2 -3 0 0 0 0]; internalField uniform 0.01; boundaryField { "." { type calculated; value uniform 0.01; } } // *********************************************** ********************* //

January 12, 2015, 07:07		#3
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	Hi, To be more precise (as you can meet .* in other files without any connection to patches), it is regular expression, dot means "any character", star means "0 or more repetitions". So any string matches this pattern.