我试图从基类item_t创建子类base_t,但它会给我带来错误:
PLS-00539:子程序'ITEM_T‘在对象类型体中声明,并且必须在对象类型规范PLS-00538中定义:子程序或游标'ITEM_T’在对象类型规范中声明,并且必须在对象类型体中定义。
不知道是怎么回事。你能帮帮我吗。
-- Open log file.
SPOOL example.txt
DROP TYPE item_t FORCE;
DROP TYPE base_t FORCE;
CREATE OR REPLACE TYPE base_t IS OBJECT
(oname VARCHA
为什么~/.sbt/0.13/plugins/build.sbt中定义的插件不包括在sbt tasks -V列表中?
jacek:~/oss/scalania
$ sbt about
[info] Loading global plugins from /Users/jacek/.sbt/0.13/plugins
[info] Loading project definition from /Users/jacek/oss/scalania/project
[info] Set current project to scalania (in build file:/Users/jacek/os
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]
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
#include <sstream>
#include <string>
using namespace std;
template<typename T>
string ToString(const T& obj)
{
ostringstream oss;
oss << obj;
//
// oss will never be used again, so I should
// MOVE its underlying string.
//
// However, below
我正在尝试开发我的第一个Drupal 8模块,我不明白为什么在我的小枝模板中没有定义jQuery。
在我的块中,我调用控制器函数:
public function build() {
$config = $this->getConfiguration();
$slider = new OsTouchController;
return $slider->displaySlider($config['id']);
}
然后在控制器中:
public function displaySlider($slider_id) {
$o