proc `==`*[T: StringSlice or string](str: StringSlice, cmp: T): bool = if cmp.isNil(): return false if str.len != cmp.len: return false when T is StringSlice: for i in cmp.start..cmp.stop: if str.str[i + str.start] != cmp.str[i]: return false return true else: return str.startsWith(cmp) template `==`*(str: string, cmp: StringSlice): bool = cmp == str