Why is there such a difference when comparing 2 objects in Javascript and in Ruby ? (it is confusing)
in Javascript :
obj1 = [1,2];
obj2 = [1,2];
obj1 == obj2
// false
in Ruby :
obj1 = [1,2];
obj2 = [1,2];
obj1 == obj2
# true
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2Because they're two different languages?slebetman– slebetman2015-06-25 02:20:58 +00:00Commented Jun 25, 2015 at 2:20
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This is one area where JavaScript and Java are actually similar.Felix Kling– Felix Kling2015-06-25 03:00:57 +00:00Commented Jun 25, 2015 at 3:00
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1 Answer
In Javascript, arrays are objects, == will test if the two objects are the same instance. If you want to compare their contents, read Comparing two arrays in Javascript.
In Ruby, there are multiple ways to compare objects. == is used to compare values, so it makes sense that they are equal.
To compare if they are the same object, use equal?:
obj1.equal? obj2
# => false
