Why am I getting different results from ng-show=“!emptyArray” and ng-hide=“emptyArray”?

Question

I have always thought ngShow and ngHide act as boolean counterpart to each other. That belief, however, is shaken by the unexpected behaviour of

Answer 1

ng-if and ng-show mistreats "[]" (empty array)

See: this link

[] == true
false

 [] != true
 true

(![]) == true
false

[''] == true
false

(!['']) == true
false

"" == true
false

"[]" == true
false

(!"[]") == true
false

Sounds its by design.