Why let a = [{}] and a.indexOf({}) -1?
3526
How to determine equality for two JavaScript objects?
36954
What does the construct f[x_] := f[x] = ... mean?
9785
What’s the difference between "Array()" and "[]" while declaring a JavaScript array?
137638
Why does ++[[]][+[]]+[+[]] return the string "10"?
11959
What's wrong with this argument that $[0,1]$ is countable?
83415
Why are my JavaScript objects equal to Proxy {}
51074
Why doesn't indexOf work on an array IE8?
126379
What do square brackets, "[]", mean in function/class documentation?
97086
How does delete[] know it's an array?
155152
What does [&] mean before function?
109376
Is indexing a new map element and having something that reads it assigned to it undefined behaviour, or just unspecified?
137018
Weirdness in Equated Java Arrays: References vs. Pointers
42605
Is there a technical reason to use > (<) instead of != when incrementing by 1 in a 'for' loop?
156548
Why is Array.Length an int, and not an uint
16864
Where is Java's Array indexOf?
39485
Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b')
50837
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)