Query on Qunatifiers

[Chandan Kumar]

Hi ,
 
I have query over quantifiers.
 
Could you please explain the combination of operators Question mark 
(?),dot(.),star(*),plus(+).
 
Say this is my string:
 
$_ = " thiiiiis is my first pattern ,quite confused with quantifiers" 
 
ex: (thi.*?) or (thi.+?) etc
 
I know what each operator does if used seperately,but combination of these 
operators are confusing.
 
 
Thanks in advance.
 
 
Best Regards,
chandan.