is
Determines if the supplied string is a valid integer.
Example (REPL) usage:
>>> isAnInteger("howdy")
res1: kotlin.Boolean = false
>>> isAnInteger("5")
res2: kotlin.Boolean = true
>>> "5".toInt()
res3: kotlin.Int = 5Content copied to clipboard
Return
true if the string can be converted to an integer
Parameters
s
string to check