Mastering Regular Expressions

Brain draining ...considering kind of gray cells I have between the ears. But, not all lost ..most was very known to me from other sources and over long time practice ...little bit here and there ...so it was not a unfamiliar story(if you think in that way of purely technical book) .

Anyway, learn loads of stuff , useful ...but I am not yet sure how much I can remember and use ...probably lean on to this time and again.

Highly recommended, if you want to deal with complex stuff and want pinpoint accuracy of the applicable things by knowing intricacies of inner working of RegEx(yes, in the tech world we called this subject by this short name!, convenient) .

Valued!!