Please explain me this regex -


I've been studying Reggae for a few days with a special look. I can not understand this regex that "bar" does not match. 

  ^ (?!. * Bar). * $   
 I do not understand why . * Bar is used if someone can give me a better explanation which would be very helpful to me. Thank you ....   
 
 
 A  
 So, if at the specified point (your In the example, the line that specifies the beginning of  ^ ), the pattern in the letterhead matches matches, the whole match fails.  
 See, you have . Bar is . If . * Bar  matches, the whole regex fails.  
 When . * Bar  match? The answer will be that whenever the  bar is in the  line, it matches:  
  bar foo bar foo bar baz   
 We say that no  was not there. * . Thus, if you only match the  bar  in the negative signal, the whole match fails. Now, remember that this check is in the beginning.  
 
 
 
 
 
 
 
 
 
 
 
   ^ (?! Bar). * $  will stop a match at the beginning of only one line, but  ^ (?! *. Bar). * $  will stop  Bar   
 Hopefully, it makes a bit obvious :)

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