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Groups > comp.lang.javascript > #31229
| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: How would you prepare for javascripting interview? |
| Date | 2016-09-05 00:06 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <87h99vz2lp.fsf@bsb.me.uk> (permalink) |
| References | (5 earlier) <1875389.irdbgypaU6@PointedEars.de> <nn044b$e69$1@dont-email.me> <nqf8t7$h37$1@dont-email.me> <nqhg6o$st6$1@dont-email.me> <number-20160904224527@ram.dialup.fu-berlin.de> |
ram@zedat.fu-berlin.de (Stefan Ram) writes:
> Doc O'Leary <droleary@2015usenet1.subsume.com> writes:
>>They'll have to do worse if they expect to function correctly based
>>on the current behavior. You could perhaps raise it as an exception
>>if you prefer, but it's just plain *wrong* to return a number that
>>wasn't given to you.
>
> |> 5 ** 0
> |< 1
>
> Why does it evaluate to 1?
>
> 5³ = 5 · 5 · 5 = 125
>
> 5² = 5 · 5 = 25
>
> 5¹ = 5 = 5
>
> 5° = = 1, why??
Lots of reasons... you want 5**x to be continuous (for real x)... you
want 5**a x 5**b = 5 ** (a+b)... and so on.
> There were three operands in the multiplication in the case of »5³«,
> there were two operands in the multiplication in the case of »5²«,
> there was still one number ("operand") left in the case of »5¹«,
> but there is /no/ operand in the case of »5°«, so why is it 1?
Here I think you want to draw attention to the fact that 1 is the
multiplicative identity...
> When you find the answer to this riddle,
> then you will also understand the reason for
>
> |> Math.max()
> |< -Infinity
... and -Infinity is the "max identity". Is that your point?
I don't think anyone is wondering *why* Math.max() = -Infinity so much
as whether it should be anything at all.
--
Ben.
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How would you prepare for javascripting interview? justaguy <lichunshen84@gmail.com> - 2016-07-18 09:10 -0700
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Re: How would you prepare for javascripting interview? "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2016-09-09 20:40 -0700
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Re: How would you prepare for javascripting interview? Doc O'Leary <droleary@2015usenet1.subsume.com> - 2016-09-06 16:20 +0000
Re: How would you prepare for javascripting interview? Ken Tilton <kentilton@gmail.com> - 2016-09-05 11:37 -0700
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Re: How would you prepare for javascripting interview? Scott Sauyet <scott@sauyet.com> - 2016-09-10 00:12 +0000
Re: How would you prepare for javascripting interview? Doc O'Leary <droleary@2015usenet1.subsume.com> - 2016-09-10 15:34 +0000
Re: How would you prepare for javascripting interview? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-09-11 01:32 +0100
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Re: How would you prepare for javascripting interview? "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-09-14 00:56 +0200
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Re: How would you prepare for javascripting interview? Tim Streater <timstreater@greenbee.net> - 2016-09-14 11:15 +0100
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