我得到了这个编译错误:
main.cpp:34:74: error: cannot allocate an object of abstract type ‘HouseClass’
mapEntVec.push_back(new HouseClass(PixelLocationClass(120, 220), 100000));
^
In file included from main.cpp:2:0:
HouseClass.h:17:7:
我在签署要发布到Sonatype Nexus Repo的工件时遇到了问题:
下面是我的build.gradle
plugins {
id 'java'
id 'idea'
id 'maven-publish'
id 'signing'
id "com.palantir.git-version" version "0.12.3"
id "io.github.gradle-nexus.publish-plugin" version
我有四节课
class A { //a base class
public:
A(ostringstream* os){ oss2=os; }
ostringstream* oss2;
};
class B : public A{ // a derived class
public:
B(ostringstream* os):A(os){};
};
class C { //class where oss is actually declared
public:
C(){};
ostringstream oss;
};
最后(
我使用play new hello命令创建了一个新的应用程序,并在目录中输入cd。当我在目录中键入play时,我收到以下错误:
akshay@Akshay:~/play/testn$ play -help
Java HotSpot(TM) Server VM warning: ignoring option MaxPermSize=512M; support was removed in 8.0
Getting org.scala-sbt sbt 0.13.0 ...
:: retrieving :: org.scala-sbt#boot-app
confs: [default]
Tomcat开始正常工作,在服务多次向cassandra添加数据后,我得到了一个不支持的版本错误。该错误如下;
com.datastax.oss.driver.api.core.servererrors.ProtocolError:无效或不支持的协议版本(0);支持的版本是(3/v3,4/v4,5/v5-β)在com.datastax.oss.driver.api.core.servererrors.ProtocolError.copy(ProtocolError.java:52) at com.datastax.oss.driver.internal.core.util.concurren
我是新来的。我们有以卡桑德拉为后端的看图设置。我们使用ConfiguredGraphFactory在运行时动态创建图形。但是,当试图使用ConfiguredGraphFactory.open("graphName")打开创建的图形时,会出现以下错误
com.datastax.oss.driver.api.core.DriverTimeoutException: Query timed out after PT2S
at com.datastax.oss.driver.api.core.DriverTimeoutException.copy(DriverTimeo
我尝试为我的项目为oss.jfrog.org做一个oss.jfrog.org。但是,我得到了这个错误:
Caused by: org.apache.maven.wagon.TransferFailedException: Failed to transfer file: http://oss.jfrog.org/simple/oss-snapshot-local/com/myorg/mylibrary/com/myorg/mylibrary/0.0.1-SNAPSHOT/mylibrary-0.0
.1-20141211.050111-1.pom. Return code is: 409, R
当我试图在Android中运行应用程序时,我遇到了这个谷歌服务缺失的错误。
试图寻找答案,我发现我应该运行"make“,但我真的不太明白你是如何做到的(我仍然是编码/android/github的新手)。
以下是错误:
File google-services.json is missing. The Google Services Plugin cannot function without it. Searched Location: C:\Users\naufa\AndroidStudioProjects\android-oss\app\src\external\min21\de
我正在尝试为AWS键空间编写一个Spark。随机地,有些记录正在更新,有些记录正在抛出此异常。
com.datastax.oss.driver.api.core.type.codec.CodecNotFoundException: Codec not found for requested operation: [INT <-> java.lang.String]
at com.datastax.oss.driver.internal.core.type.codec.registry.CachingCodecRegistry.createCodec(CachingCodecRegi
我正在尝试创建一个查询,该查询根据另一个表(oss)中特定项的当前值返回相关表(cld) -但是,使用以下查询,当前收到"Error Code: 1241 Operand should 1 column(s)“: SELECT
CASE
WHEN oss.`creative_link_data` IS NOT NULL THEN (SELECT * FROM `facebook_creative_link_data`)
END
FROM adgroup a
JOIN `creative` c ON c.`parent_id` = a.`uuid`
LEFT JOIN `faceb