IntAtLeast returns a SchemaValidateFunc which tests if the provided value is of type int and is at least min (inclusive).

ParseTwoPartID returns the pieces of id `left:right` as left, right.

StringInSlice returns a SchemaValidateFunc which tests if the provided value is of type string and matches the value of an element in the valid slice will test with in lower case if ignoreCase is true.

ValidateValueFunc check arguments based on list of strings.