You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: datenum2.m
    path of file: ./repos/Image-Harmonization-Dataset-iHarmony4/Lalonde and Efros/utils/3rd_party/multicore
    
    the code of the file until where you have to start completion: function dateNr = datenum2(dateStr)
%DATENUM2  Return serial date number.
%		Note: This function is a workaround for a kind of bug in Matlab. In
%		certain versions, function DIR returns date strings not recognized by
%		function datenum.
%
%		DATENUM2(STR) returns the serial date number for the given date string
%		STR. Function DATENUM2 is a wrapper for DATENUM which replaces german
%		month abbreviations like "Okt" by the english versions like "Oct"
%		before forwarding the string to function DATENUM.
%
%		Function DATENUM2 first tries to build a date vector from the given
%		string for performance reasons. However, only date format 0
%		(dd-mmm-yyyy HH:MM:SS) is supported for this. If the given date string
%		is in a different format, the string is forwarded to function DATENUM.
%
%		Markus Buehren
%		Last modified 30.12.2008 
%
%		See also DATENUM, TRANSLATEDATESTR.

% first try if Matlab recognizes the date string
try 

    
function dateNr = datenum2(dateStr)
%DATENUM2  Return serial date number.
%		Note: This function is a workaround for a kind of bug in Matlab. In
%		certain versions, function DIR returns date strings not recognized by
%		function datenum.
%
%		DATENUM2(STR) returns the serial date number for the given date string
%		STR. Function DATENUM2 is a wrapper for DATENUM which replaces german
%		month abbreviations like "Okt" by the english versions like "Oct"
%		before forwarding the string to function DATENUM.
%
%		Function DATENUM2 first tries to build a date vector from the given
%		string for performance reasons. However, only date format 0
%		(dd-mmm-yyyy HH:MM:SS) is supported for this. If the given date string
%		is in a different format, the string is forwarded to function DATENUM.
%
%		Markus Buehren
%		Last modified 30.12.2008 
%
%		See also DATENUM, TRANSLATEDATESTR.

% first try if Matlab recognizes the date string
try 
	dateNr = datenum(dateStr);
	return
catch
	% do nothing
end