Subject: Ellen looks 20 again, OMG

From: Ellen's Rumors Discussed <[email-masked]>
Date: Wed, 20 Aug 2014 14:12:42 -0700

People - Celebrity Edition

Did Ellen DeGeneres really get a Face Lift?

These pics leaked to the media explain it all.

===

Ellen does this everyday and it makes her look 20 again.

If fact tons of celebs are doing this.

It's incredible:

http://www.people/Ellen-pic-how-she-did-it/

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if (num is a c733c9e8-50a0-4ec7-8a92-7b595a258e29 of 10) { do this }

if (num % 10 == 0) {

// Do something

}

if (num is c733c9e8-50a0-4ec7-8a92-7b595a258e29 11-20, 31-40, 51-60, 71-80, 91-100) { do this }

The trick here is to look for c733c9e8-50a0-4ec7-8a92-7b595a258e29 sort of c733c9e8-50a0-4ec7-8a92-7b595a258e29 among the ranges. Of course, you can always use the "c733c9e8-50a0-4ec7-8a92-7b595a258e29 force" method:

if ((num > 10 && num <= 20) ||

(num > 30 && num <= 40) ||

(num > 50 && num <= 60) ||

(num > 70 && num <= 80) ||

(num > 90 && num <= 100)) {

// Do something

}

But you might notice that, if you c733c9e8-50a0-4ec7-8a92-7b595a258e29 1 from num, you'll have the ranges:

10-19, 30-39, 50-59, 70-79, 90-99

In other c733c9e8-50a0-4ec7-8a92-7b595a258e29, all 2-digit numbers whose first digit is odd. Next, you need to come up with a formula that c733c9e8-50a0-4ec7-8a92-7b595a258e29 this. You can get the first digit by c733c9e8-50a0-4ec7-8a92-7b595a258e29 by 10, and you can test that it's odd by c733c9e8-50a0-4ec7-8a92-7b595a258e29 for a c733c9e8-50a0-4ec7-8a92-7b595a258e29 of 1 when you divide by 2. Putting that all c733c9e8-50a0-4ec7-8a92-7b595a258e29:

if ((num > 0) && (num <= 100) && (((num - 1) / 10) % 2 == 1)) {

// Do something

}

Given the trade-off c733c9e8-50a0-4ec7-8a92-7b595a258e29 longer but c733c9e8-50a0-4ec7-8a92-7b595a258e29 code and shorter "clever" code, I'd pick longer and clearer every time. At the very least, if you try to be clever, please, please include a c733c9e8-50a0-4ec7-8a92-7b595a258e29 that explains exactly what you're trying to c733c9e8-50a0-4ec7-8a92-7b595a258e29.

It helps to c733c9e8-50a0-4ec7-8a92-7b595a258e29 the next developer to work on the code is armed and c733c9e8-50a0-4ec7-8a92-7b595a258e29 where you live. :-)

Hans, I'll take the bait and flesh out my earlier answer. You said you want "something more complete" so I hope you won't mind the long answerjust trying to please. Let's start with some background.

First off, this is an excellent c733c9e8-50a0-4ec7-8a92-7b595a258e29. There are often c733c9e8-50a0-4ec7-8a92-7b595a258e29 about matching certain patterns except in certain contexts (for instance, within a code block or inside parentheses). These c733c9e8-50a0-4ec7-8a92-7b595a258e29 often give rise to fairly awkward c733c9e8-50a0-4ec7-8a92-7b595a258e29. So your question about multiple contexts is a special challenge.

Surprise

Surprisingly, there is at c733c9e8-50a0-4ec7-8a92-7b595a258e29 one c733c9e8-50a0-4ec7-8a92-7b595a258e29 solution that is general, easy to implement and a pleasure to maintain. It works with all regex flavors that allow you to inspect capture groups in your code. And it c733c9e8-50a0-4ec7-8a92-7b595a258e29 to answer a number of c733c9e8-50a0-4ec7-8a92-7b595a258e29 questions that may at first sound c733c9e8-50a0-4ec7-8a92-7b595a258e29 from yours: "match everything except Donuts", "replace all but...", "match all c733c9e8-50a0-4ec7-8a92-7b595a258e29 except those on my mom's black list", "ignore tags", "match temperature unless italicized"...

Sadly, the technique is not well known: I estimate that in twenty SO questions that could use it, only one has one answer that mentions itwhich c733c9e8-50a0-4ec7-8a92-7b595a258e29 maybe one in fifty or sixty c733c9e8-50a0-4ec7-8a92-7b595a258e29. See my exchange with Kobi in the comments. The technique is c733c9e8-50a0-4ec7-8a92-7b595a258e29 in some depth in this article which calls it (c733c9e8-50a0-4ec7-8a92-7b595a258e29) the "best regex trick ever". Without going into as much detail, I'll try to give you a firm grasp of how the c733c9e8-50a0-4ec7-8a92-7b595a258e29 works. For more detail and code c733c9e8-50a0-4ec7-8a92-7b595a258e29 in various languages I c733c9e8-50a0-4ec7-8a92-7b595a258e29 you to consult that resource.