Collection of Science Jokes P2

[kuruman]

An oldie but goodie

 

[BillTre]

 

[BillTre]

 

[DrClaude]

 

[fresh_42]

 

[etotheipi]

 

[mfb]

Take your age, add three, then subtract three. That's your age.

In JavaScript it's your age plus 0.000000000001567.
Or 10 times your age, if you take your age as string.

var a="123"
var b=a+3
var c=b-3
document.write(c)

--> 1230

 

[pinball1970]

I am afraid for the calendar..

It's days are numbered.

 

[Ibix]

In JavaScript it's your age plus 0.000000000001567.
Or 10 times your age, if you take your age as string.

var a="123"
var b=a+3
var c=b-3
document.write(c)

--> 1230

So + is defined for strings so 3 is cast to string and b gets the value "1233", but - isn't defined for strings so b gets cast to integer and c is 1230? That's nasty...

 

[phinds]

I am afraid for the calendar..

It's days are numbered.

You hear about the guy who got fired from the calendar factory? He took a day off.

 

[fresh_42]

You hear about the guy who got fired from the calendar factory? He took a day off.

McKinsey was hired by the manufacturer. They found out, that costs could be reduced by a factor 1/364 if all calendar pages are printed with "Today".

 

[fresh_42]

Employees have been requested to use pogo sticks while on the calendar factory's ground. It was a leap year.

 

[pinball1970]

So + is defined for strings so 3 is cast to string and b gets the value "1233", but - isn't defined for strings so b gets cast to integer and c is 1230? That's nasty...

McKinsey was hired by the manufacturer. They found out, that costs could be reduced by a factor 1/364 if all calendar pages are printed with "Today".

I may take these jokes to the homework helper section, 'Explain why these are funny.'

 

[fresh_42]

I may take these jokes to the homework helper section, 'Explain why these are funny.'

 

[kuruman]

View attachment 281677

I have one of these electronic calendars. If you hit the → key, it says "Tomorrow" and if you hit the ← key, it says "Yesterday".

 

[mfb]

So + is defined for strings so 3 is cast to string and b gets the value "1233", but - isn't defined for strings so b gets cast to integer and c is 1230? That's nasty...

Yes. JavaScript is full of these odd features.
string=('b'+'a'+ + 'a' + 'a').toLowerCase() produces "banana".
'b'+'a' is regular string concatenation. The next term is " +'a' ", so JS tries to convert 'a' to an integer which produces NaN. That can be converted to a string ("NaN"), so it can be concatenated. Add the final "a" to get "baNaNa", and toLowerCase obfuscates the process a bit.

!null is true. So is null==false? No, it is not. Both null==false and null==true evaluate to false.
Exactly the same for undefined.
But what you can do: undefined==null is true.
NaN == NaN is false.

!null+""+ +'a' produces the string "trueNaN".

 

[Ibix]

JavaScript is full of these odd features.

I've used Javascript a few times and was aware that its type conversion was... interesting, but I hadn't realized quite how interesting.

 

[DrGreg]

This reminds me of the time I saw a price ticket on a supermarket shelf which told me that the price of a product was 95p and the price per 100g was NaNp.

 

[kuruman]

This reminds me of the time I saw a price ticket on a supermarket shelf which told me that the price of a product was 95p and the price per 100g was NaNp.

Which, of course, implies that 95 = NaN in SI.

 

[DrGreg]

Which, of course, implies that 95 = NaN in SI.

Or that the object for sale was a photon.

 

[Ibix]

Which, of course, implies that 95 = NaN in SI.

I suspect that 0+"95p" probably does equal NaN in Javascript...

 

[etotheipi]

 

[etotheipi]

 

[etotheipi]

 

[BillTre]

 

[etotheipi]

How many number theorists does it take to change a lightbulb?
Nobody knows the exact number, but it is believed to be an elegant prime.

 

[BillTre]

In biology,
you can divide to multiply.

 

[DennisN]

How many number theorists does it take to change a lightbulb?
Nobody knows the exact number, but it is believed to be an elegant prime.

How many psychologists does it take to change a lightbulb?

Spoiler

Only one, but the lightbulb has to want to change.

 

[etotheipi]

Let $\epsilon < 0$

 

[PhDeezNutz]

Are you a Hilbert Space? Because you complete me <3.

 

[jack action]

 

[WWGD]

 

[BillTre]

 

[BillTre]

 

[BillTre]