I think the OPs logic is clear; he just mixed up his operator. (His implementation may also be flawed!)

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I'm with torvalds on this
In the absence of evidence, opinion is indistinguishable from prejudice. Agile (and TDD) debunked

In reply to Re^3: Matching text in a string by BrowserUk
in thread Matching text in a string by htmanning

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