#POINTER

ORA-30202: NULL pointer to OCIMsgh was passed to OCIMsg function

文档解释ORA-30202:NULLpointertoOCIMsghwaspassedtoOCIMsgfunctionCause:TheNULLpointerwaspassed.Action:CheckyourvalueofOCIMsghpointer.ORA-30202是ORACLE数据库中常见的内部错误。它是指在调...

ORA-09989: attempt to use invalid skgmsdef struct pointer

文档解释ORA-09989:attempttouseinvalidskgmsdefstructpointerCause:PointertoskgmsdefstructusedwithoutvalidatingitAction:Assignavalidaddresstotheskgmsdefstructpointerbe...

ORA-02788: Unable to find kernel process pointer in async process array

文档解释ORA-02788:UnabletofindkernelprocesspointerinasyncprocessarrayCause:Internalerror–ContactORACLEsupport.Action:NoneORA-02788:在异步进程数组中找不到内核进程指针错误,这是一个系统错...

ORA-44910: xpointer not supported within XInclude element

文档解释ORA-44910:xpointernotsupportedwithinXIncludeelementCause:ThexpointerattributeisspecifiedwithinXIncludeelement.Action:Removethexpointerattribute.ORA-44910是一个...

NullPointerException

if(userName.equals("zhansan")){}  可能会报空指针异常...
代码星球 ·2021-02-23

SSM java.lang.NullPointerException

 如上图所示的异常原来是少了这个东西,加上就好了  ...
代码星球 ·2021-02-17

C++ code:指针类型(pointer types)

1#include<iostream>2usingnamespacestd;34intmain()5{6floatf=34.5;7int*ip=reinterpret_cast<int*>(&f);8cout<<"floataddress:"<<&f<...

C++ code:char pointers and char arrays(字符指针与字符数组)

C-串的正确赋值、复制、修改、比较、连接等方式。1#include<iostream>2#pragmawarning(disable:4996)//这一句是为了解决“strrev”出现的警告3usingnamespacestd;4intmain()5{6char*s1="Hello";7char*s2="1...

[转]NullPointerException异常

原文地址:http://blog.csdn.net/javaeeteacher/article/details/4285488顾名思义,NullPointerException是空指针异常。但是在Java中没有指针,怎么会有空指针异常呢?在C++中,声明的指针需要指向一个实例(通过new方法构造),这个指针可以理解为地...
代码星球 ·2021-02-15

two pointers

https://www.geeksforgeeks.org/container-with-most-water/Approach:Thisimpliesthatiftherewasabettersolutionpossible,itwilldefinitelyhavetheHeightgreaterthanmin(a1...
代码星球 ·2021-02-08

springcloud gateway nullpointerexception (NettyRoutingFilter)

最近在做一个下载功能时,发现直接调用服务是可以下载的,但是通过gateway路由下载会报NPE异常,具体如下java.lang.NullPointerException:nullatjava.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:...

NullPointerException-----开发中遇到的空指针异常

1.使用CollectionUtils.isEmpty判断空集合publicclassTestIsEmpty{staticclassPerson{}staticclassGirlextendsPerson{}publicstaticvoidmain(String[]args){List<Integer>fi...

反向解析与PTR(Pointer Record)

PTR记录,是电子邮件系统中的邮件交换记录的一种;另一种邮件交换记录是A记录(在IPv4协议中)或AAAA记录(在IPv6协议中)。PTR记录常被用于反向地址解析。PTR记录  PointerRecord  电子邮件系统中的一种数据类型  用于反向地址解析&n...

kotlin.KotlinNullPointerException

*Whatwentwrong:Aproblemoccurredconfiguringproject':app'.>kotlin.KotlinNullPointerException(noerrormessage) 后查是因为本地少了 local.properties文件,从而导致缺少andro...
代码星球 ·2020-10-22

leetcode 138. Copy List with Random Pointer

138.CopyListwithRandomPointer分三步:1.在原有list每个节点的后面增加与原节点值相同的节点    2.在这些新生成的节点中增加随机节点    3.将原有的节点和新生成的节点进行分离注意:if(cur->random)randNode=cur->random->next;...
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