HasIndex
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hashIndex return whether the given index is valid for this object, that is, whether it could be used with square brackets to get some value
from self.
See also: Indexes
Arguments
| Parameter Name | Default Value | Meaning |
|---|---|---|
| self | string, list, or map | object to check for an index on |
| index | any | value to consider for possible index |
Usage Notes
When self is a list or string, the result is true for integers from -(length of string) to (length of string-1). When self is a map, it is true for any key (index) in the map. If called on a number, this method throws a runtime exception.
Example
"foo".hasIndex(2) // returns 1
"foo".hasIndex(3) // returns 0
