I am literally using instanceof, which means not a constant, I guess?
Makes a lot of sense once you understand what NaN is.
When you do an operation that results in NaN, its failure is not exactly the same as the other. Imagine doing an operation manually and you'll understand that it's never equals the other and there are more ways to reach that result, making it always different.
Why are you explaining it like it is magic?
Infinity is not reverse NaN, they are pretty different.
Of course. But, I mean does it make more sense Infinity == Infinity is true and NaN == NaN is not?
I am literally using instanceof, which means not a constant, I guess?
Great, then why the comparison? Just because a instanceof can be equal to the other doesn't mean all of them are equal, right?
Why are explaining it like it is magic?
I tried to explain because I thought it would help. A lot of times when I was learning JavaScript and came into something like this, an explanation which was not complex as say IEEE754 really helped me. So if it sounded condescending I'm sorry, it was not my intention.
Of course. But, I mean does it make more sense Infinity == Infinity is true and NaN == NaN is not?
At first yes, for sure. That's why it's important to see how they got to this point when they were developing the language. It's not a bug if it's intentional and I was very surprised with most of them to be intentional when I was learning. I mean, it's part of the process to start liking it, otherwise people tend to be stuck in "this language is trash because of this", you know? At least happened to me.
A lot of times when I was learning JavaScript and came into something like this, an explanation which was not complex as say IEEE754 really helped me.
But, my concern is that there is a NaN object under the Number type (Number.NaN) even though NaN is NOT a number - I think the reason for this is that NaN is part of the IEEE 754 values which means all Number values including NaN. So, the thing that is confusing is the naming of these variables. Same thing for Infinity which is not actually the usual mathematical infinity, but rather a const (max value):
At first yes, for sure. That's why it's important to see how they got to this point when they were developing the language. It's not a bug if it's intentional and I was very surprised with most of them to be intentional when I was learning. I mean, it's part of the process to start liking it, otherwise people tend to be stuck in "this language is trash because of this", you know? At least happened to me.
Yeah, i see.
Thank you for sharing your knowledge and experience.
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I am literally using
instanceof, which means not a constant, I guess?Why are you explaining it like it is magic?
Of course. But, I mean does it make more sense
Infinity == Infinityis true andNaN == NaNis not?Great, then why the comparison? Just because a instanceof can be equal to the other doesn't mean all of them are equal, right?
I tried to explain because I thought it would help. A lot of times when I was learning JavaScript and came into something like this, an explanation which was not complex as say IEEE754 really helped me. So if it sounded condescending I'm sorry, it was not my intention.
At first yes, for sure. That's why it's important to see how they got to this point when they were developing the language. It's not a bug if it's intentional and I was very surprised with most of them to be intentional when I was learning. I mean, it's part of the process to start liking it, otherwise people tend to be stuck in "this language is trash because of this", you know? At least happened to me.
But, my concern is that there is a NaN object under the Number type (Number.NaN) even though NaN is NOT a number - I think the reason for this is that NaN is part of the IEEE 754 values which means all Number values including NaN. So, the thing that is confusing is the naming of these variables. Same thing for Infinity which is not actually the usual mathematical infinity, but rather a const (max value):
Yeah, i see.
Thank you for sharing your knowledge and experience.