小编Nat*_*Ngs的帖子

尝试运行go build命令后出现的一小部分错误

go build ./...
trillian.pb.go:7:8: cannot find package "github.com/golang/protobuf/proto" in any of:
    /usr/local/go/src/github.com/golang/protobuf/proto (from $GOROOT)
    /Projects/Proj1/trillian/src/github.com/golang/protobuf/proto (from $GOPATH)

trillian.pb.go:11:8: cannot find package "github.com/golang/protobuf/ptypes/any" in any of:
    /usr/local/go/src/github.com/golang/protobuf/ptypes/any (from $GOROOT)
    /Projects/Proj1/trillian/src/github.com/golang/protobuf/ptypes/any (from $GOPATH)

trillian_admin_api.pb.go:12:8: cannot find package "github.com/golang/protobuf/ptypes/empty" in any of:
    /usr/local/go/src/github.com/golang/protobuf/ptypes/empty (from $GOROOT)
    /Projects/Proj1/trillian/src/github.com/golang/protobuf/ptypes/empty (from $GOPATH)

trillian.pb.go:10:8: cannot find package "github.com/google/trillian/crypto/sigpb" in any of:
    /usr/local/go/src/github.com/google/trillian/crypto/sigpb (from $GOROOT)
    /Projects/Proj1/trillian/src/github.com/google/trillian/crypto/sigpb (from $GOPATH)

trillian_admin_api.pb.gw.go:17:2: cannot find package "github.com/grpc-ecosystem/grpc-gateway/runtime" in any of:
    /usr/local/go/src/github.com/grpc-ecosystem/grpc-gateway/runtime (from  $GOROOT)
    /Projects/Proj1/trillian/src/github.com/grpc-ecosystem/grpc-gateway/runtime (from $GOPATH)

trillian_admin_api.pb.gw.go:18:2: cannot find package "github.com/grpc-ecosystem/grpc-gateway/utilities" …

我正在读一本书.在书中写道 -

浮点加法满足以下单调特性:
如果a>=b再(x + a) >= (x+b)对任何价值a,b和x其他比NaN.无符号或二进制补码的加法不符合实数(和整数)加法的这一性质.

浮点如何服从它？
为什么无符号或两个补码不符合它？

如果我在IE11中按下表单发送按钮"Saada" ,我将收到一个错误:

Object doesn't support property or method 'attachEvent'

我发现这是一个IE11问题,但我发现的唯一解决方案是使用我的开发人员工具并将浏览器设置为以IE9模式运行.

但是我希望每个人都可以在不使用他们的开发者工具的情
你知道我可以尝试的其他解决方案吗？或者我可能需要导入其他一些Jquery库？

其他浏览器工作正常,但这只发生在IE11中

我使用cytoscape.js来显示节点之间的关系。我想为一个节点创建不同的时尚标签。我想要更复杂的时尚标签，然后在cytoscape.org官方示例中。

我该怎么做？

我的问题的样本图片：

我尝试将String ID转换为MongoDB ObjectID

public class relevancy_test extends  Object implements Comparable<ObjectId> {
    public static void main(String[] args) throws UnknownHostException {
        MongoClient mongo = new MongoClient("localhost", 27017);
        DB mydb = mongo.getDB("test");
        DBCollection mycoll = mydb.getCollection("mytempcoll");
        BasicDBObject query = null;
        Map<ObjectId, DBObject> updateMap = new HashMap<ObjectId, DBObject>();
        List<DBObject> dbobj = null;
        DBCursor cursor = mycoll.find();
        dbobj = cursor.toArray();

        for (DBObject postObj : dbobj) {
            String id = postObj.get("_id").toString();
            ObjectId objId = new ObjectId((String) postObj.get("_id"));
            updateMap.put(objId, postObj);
        }
    }
}

这(String) postObj.get("_id")是表格 …

我收到以下错误：

bash: -Dversion=${log4j.version}: bad substitution

执行以下命令时：

mvn install:install-file -DgroupId=log4j -DartifactId=log4j -Dversion=${log4j.version} -Dpackaging=jar -Dfile=/home/user/Downloads/log4j-1.2.17.jar

知道如何解决这个问题吗？