期望所有子对象都包含属性

Question

我想声明此对象中的所有子对象都包含一个为true的open属性：

    struct sockaddr_in from_addr;
    socklen_t fromlen = sizeof(from_addr);
    char    from_ip[2048] = "";
    int nbytes = 0;

    // Receive until the peer shuts down the connection
    do {

        nbytes = recvfrom(ClientSocket, recvbuf, recvbuflen, 0, (sockaddr *) &from_addr, &fromlen);
        InetNtop(AF_INET, &from_addr.sin_addr, from_ip, sizeof(from_ip));

        if (nbytes > 0) {
            printf("Received %d bytes from %s@%d", nbytes, from_ip, ntohs(from_addr.sin_port));

            // Echo the buffer back to the sender
            iSendResult = send(ClientSocket, recvbuf, nbytes, 0);
            if (iSendResult == SOCKET_ERROR) {
                printf("send failed with error: %d\n", WSAGetLastError());
                closesocket(ClientSocket);
                WSACleanup();
                return 1;
            }
            printf("\tBytes sent: %d\n", iSendResult);
        }
        else if (nbytes == 0)
            printf("Connection closing...\n");
        else  {
            printf("recv failed with error: %d\n", WSAGetLastError());
            closesocket(ClientSocket);
            WSACleanup();
            return 1;
        }
        fromlen = sizeof(from_addr);

    } while (nbytes > 0);

现在我正在做：

var groups = {
    'Group1': {
        open: true,
        entries: [...]
    },
    'Group2': {
        open: true,
        entries: [...]
    },
    'Group3': {
        open: true,
        entries: [...]
    }
}

有没有可以简化这个的柴相匹配器。例如

angular.forEach(groups, function(group) {
    expect(group.open).to.be.true;
})