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I don't think this is really wrong.
This is probably due to confusion between modulo and remainder.
There seems to be the same for positive numbers.
But for negative numbers, there are different.
Remainder work as expected.
But modulo work as following: returns the difference of the first number, and the biggest integer (possibly negative) multiple of the second number that is less than the first number.
So in our example: -1 - -20 = 19
That's why lot of programming languages have 2 "modulo" operators, one for modulo operations and one for remainder operations.
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Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 26 2016, 10:47:25)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import math
>>> math.fmod(-1,20)
-1.0
>>>
modified 31-Aug-17 9:14am.
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Having given this some thought... I have come to the conclusion that the argument that the remainder must never be negative must make sense only to they who realllllly don't like improper fractions and consider negative fractions to be improper.
But I have not found anything explaining why someone would feel that way. I have a guess, but no way to confirm it.
modified 2-Sep-17 13:05pm.
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Former Chairman of Federal Reserve to Speak at Blockchain Conference
In 2013, Bernanke wrote that virtual currencies “could have a long term promise”, and addressed his thoughts to congress. However, more recently in 2015, Bernanke also said that there were some “serious problems” with virtual currencies, including issues with anonymity and the lack of stability.
OK, no more blockchain posts for a while now, at least from me 
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next Tuesday, 50 leaders representing the business, technology, government, academia, arts and non-profit sectors arrive on Sir Richard Branson’s private island to spend three packed days discussing blockchain technology for the third annual Blockchain Summit....“We’re trying always to invite the biggest thinkers of this world and discuss how we can use this technology to really do good,” said Bitfury chief executive Valery Vavilov.
On Sir Richard Branson's Necker Island, Bitfury Hosts Third Annual Blockchain Summit
And elsewhere, 5000000 people around the world are trying to figure out how to use blockchain to do really evil things.
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Actually, the title is a little misleading. I accidentally ran across something that will crash the compiler process which runs separately from the IDE. It's not that big a deal but it seems to be repeatable. This will happen when you put an invalid entry in the initialization list of a class constructor. For example :
class DerivedClass()
: BaseClass( defaultArg )
, m_ValidMember( 0 )
, m_InvalidMember( 0 ) {
}
As anyone else run across something like this or other ways to cause mayhem with VS17?
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Just one? 
(yes, I know the title is misleading, but I couldn't resist.)
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What, you expect MS to stop working on the next half-baked version to fix an old bug???
Since VS2010 they've stopped doing that, 13 is relatively stable (but has issues ms simply ignored because they were rushing out 15), 15 has even more issues ms simply ignores because they are already working on the next.
You can bet on the next version (VS2019?) still having that exact same problem.
Once upon a time ms [mostly] finished software before release, but since the new mgmt that is no longer the case - and that's across the entire product range. A bad habit they took from google.
Just be happy ms/google etc don't build planes or self driving cars and ... oh elephant
signature upgrading ... please wait.
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There's still more chance of it getting fixed if you report it to them than if you don't. If you don't report it to them, they might not know about the bug.
Lopatir wrote: oh elephant
I think you mean: "oh ![Elephant | [mastadon]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/elephant.gif) " 
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Dropped keys in car and had to stretch an contort to fish them out from under the seat, then, walking up the stirs with coffee, I took a bit of a misstep, lurching forward with associated mess. Meanwhile, just a bit later, Mrs. calls me on cell (flip phone) - which flipped out of my hands and into a nearby urinal. The phone model is discontinue ($20 LG B450) but can be had for $80. Aside from that, even if it starts to work again when it dries out, do I really want to put it up to my face?
So far, I've navigated the last hour safely, but the day is still young and there's the trip home.
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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So... based on the procedures where I work:
You should not be carrying liquids on the stair case; always maintain 3 points of contact.
When using the restroom, concentrate on what you're doing; a phone call or text can wait.
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Tim Carmichael wrote: When using the restroom, concentrate on what you're doing; a phone call or text can wait.
Have you been off the planet for a few years? If so, where did you go and how long did it take? I'm still looking for a ride.
The user can't update the up: we update it for them (Choice in the CP poll)
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A very peaceful is to be had when you take out your phone and leave it on the desk, not just going to the toilet but lunch / tea breaks too.
Young ones may not know this, but once upon a time this is how it was done ... not by choice, but by the limitations of technology ... and the world kept on spinning just fine without everyone being tethered to a stupid phone 24/7, in fact the world spun a lot smoother than now.
Any important calls (definition of important should be much it matters to you, not the caller), you can see the number(s) that came in ...
If the caller thinks it's urgent they will sure 1. call many times, 2. send a text or email, or 3 = 1 + 2.
Really who gives a elephant: phones are tools to help us, not chains to bind us. Often weekends I'll go out without the stupid thing at all.
signature upgrading ... please wait.
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I really have been on this planet too long.
The user can't update the up: we update it for them (Choice in the CP poll)
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CodeWraith wrote: I really have been on this planet too long.
Just a short trip to the bottom of the food chain should put things right with you, no?
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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I need a ride, not a diet.
The user can't update the up: we update it for them (Choice in the CP poll)
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Ahhh - you misunderstood! You would not be shopping . . . you would be taking up residency.
| Ravings en masse^ |
|---|
| "The difference between genius and stupidity is that genius has its limits." - Albert Einstein | | "If you are searching for perfection in others, then you seek disappointment. If you are seek perfection in yourself, then you will find failure." - Balboos HaGadol Mar 2010 |
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Yes, that's right. I request immediate extraction.
Which part of 'immediate' did you not understand? The natives are already making a fire under the pot and discussing how to properly cook me!
The user can't update the up: we update it for them (Choice in the CP poll)
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I didn't drop my phone in the urinal... it can wait.
If my wife calls, it waits.
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Probably not a good day to buy a lottery ticket. 
Arguing with a woman is like reading the Software License Agreement. In the end, you ignore everything and click "I agree".
Anonymous
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W∴ Balboos wrote: Mrs. calls me on cell (flip phone) - which flipped out of my hands and into a nearby urinal.
Talking on the phone (to the love of your life) in the men's room? How gauche! 
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