So it cannot be applied to Ruby, since Ruby doesn’t have const keyword.
But it has constants.
irb(main):001:0> PI = 3.14
=> 3.14
irb(main):002:0> PI = 4.01
(irb):2: warning: already initialized constant PI
(irb):1: warning: previous definition of PI was here
=> 4.01
I’m not defending Ruby, I don’t recommend Ruby to anyone, I’m just trying to be fair in my hits. You cannot expect to write an immutable variable in Ruby – Ruby doesn’t propose to support such a feature.
But, when you write a constant in Julia, it’s fair to expect it to be constant. 🤷
(But it isn’t.)
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But it has constants.
However, at no time Ruby tries to mislead you by using the token
const– which is the point.But I have to admit it shouldn’t use the word “constant” anywhere, not in code (it doesn’t), not in documentation (it does).
I’m not defending Ruby, I don’t recommend Ruby to anyone, I’m just trying to be fair in my hits. You cannot expect to write an immutable variable in Ruby – Ruby doesn’t propose to support such a feature.
But, when you write a constant in Julia, it’s fair to expect it to be constant. 🤷
(But it isn’t.)