You can’t do what you’re trying to do: bash arrays are one-dimensional $ declare -A PERSONS $ declare -A PERSON $ PERSON[“FNAME”]=’John’ $ PERSON[“LNAME”]=’Andrew’ $ declare -p PERSON declare -A PERSON='([FNAME]=”John” [LNAME]=”Andrew” )’ $ PERSONS[1]=([FNAME]=”John” [LNAME]=”Andrew” ) bash: PERSONS[1]: cannot assign list to array member You can fake multidimensionality by composing a suitable array index … Read more
In ECMAScript 6 you can use computed values for object keys: var CONSTANT_A = 0, CONSTANT_B = 1 var state_machine = { [CONSTANT_A]: function () { return ‘a’ }, [CONSTANT_B]: function () { return ‘b’ } }; console.log(state_machine) This does not work in Internet Explorer 11 nor in Safari browsers: https://kangax.github.io/compat-table/es6/#test-object_literal_extensions_computed_properties
also $a = @{‘foo’=’bar’} or $a = @{} $a.foo = ‘bar’
Try this: function isEmpty(map) { for(var key in map) { if (map.hasOwnProperty(key)) { return false; } } return true; } Your solution works, too, but only if there is no library extending the Object prototype. It may or may not be good enough.
Everything in JavaScript is an object. In the case of an Array, the length property returns the size of the internal storage area for indexed items of the array. Some of the confusion may come into play in that the [] operator works for both numeric and string arguments. For an array, if you use … Read more