大约有 1,066 项符合查询结果(耗时:0.0119秒) [XML]

https://www.fun123.cn/referenc... 

App Inventor 2 试验组件 · App Inventor 2 中文网

... 使用已更新的标签和值启动事件。 Firebase错误时(消息) 表示与 Firebase 的通信发出错误信号。 第一项已删除时(值) 由 删除第一项 函数触发的事件。参数“值”是列表中第一个对象,现在已被删除。 以获得值时(标...
https://www.tsingfun.com/it/cpp/2163.html 

select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术

...等待队列中并不代表进程已经睡眠了)。在设备收到一条消息(网络设备)或填写完文件数据(磁盘设备)后,会唤醒设备等待队列上睡眠的进程,这时current便被唤醒了。 (6)poll方法返回时会返回一个描述读写操作是否就绪...
https://www.tsingfun.com/ilife/tech/1267.html 

得合伙人者得天下:腾讯五虎、新东方三驾马车、携程四君子、复旦五虎 - 资...

...们魏一搏打了个电话,当时只是想告诉他自己要创业了的消息,没想到几分钟之后魏一博回电说决定一起创业。两人分别卖掉自己的一套房子,凑到了150万元的创业启动资金。 上下铺兄弟的十年试错之旅 学校:清华大学 创...
https://stackoverflow.com/ques... 

What is the proper REST response code for a valid request but an empty data?

...hat it was a client error and thus the whole class of client error codes (4xx) is not fitting. More importantly, 404 can happen for a number of technical reasons. E.g. the application being temporarily deactivated or uninstalled on the server, proxy connection issues and whatnot. Therefore the clie...
https://stackoverflow.com/ques... 

Using getopts to process long and short command line options

...FILE="$2"; shift 2 ;; --minheap ) JAVA_MISC_OPT="$JAVA_MISC_OPT -XX:MinHeapFreeRatio=$2"; shift 2 ;; --maxheap ) JAVA_MISC_OPT="$JAVA_MISC_OPT -XX:MaxHeapFreeRatio=$2"; shift 2 ;; -- ) shift; break ;; * ) break ;; esac done This lets you specify options like --verbose...
https://stackoverflow.com/ques... 

Spring @Transactional - isolation, propagation

...t is either using xml Or annotation manager.setPropagationBehavior(XX); manager.setIsolationLevelName(XX); status = manager.getTransaction(Def); } public void commitTransaction() { if(status.isCompleted()){ ...
https://stackoverflow.com/ques... 

What is an undefined reference/unresolved external symbol error and how do I fix it?

...rror LNK2001: unresolved external symbol "void __cdecl foo(void)" (?foo@@YAXXZ) 1>test2.obj : error LNK2001: unresolved external symbol "int x" (?x@@3HA) 1>test2.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall A::~A(void)" (??1A@@UAE@XZ) 1>test2.obj : error LNK20...
https://stackoverflow.com/ques... 

What is the difference between partitioning and bucketing a table in Hive ?

... While creating table you can specify like CLUSTERED BY (employee_id) INTO XX BUCKETS; where XX is the number of buckets . Bucketing has several advantages. The number of buckets is fixed so it does not fluctuate with data. If two tables are bucketed by employee_id, Hive can create a logically corr...
https://www.tsingfun.com/it/tech/1330.html 

廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...配置文件的 net 选项中 allow-two-primaries yes; 安装 cman 底层消息通讯 + 全局锁功能 ccs_tool create gfscluster ccs_tool addnode -n 1 -v 1 gfs_1 ccs_tool addnode -n 2 -v 1 gfs_2 查看节点 ccs_tool lsnode 3.5再次启动 drbd 服务 service drbd stop 如果之...
https://www.tsingfun.com/it/tech/1389.html 

程序员之网络安全系列(二):如何安全保存用户密码及哈希算法 - 更多技术 ...

.... 典型的哈希算法包括 MD2、MD4、MD5 和 SHA-1 Hash算法是给消息生成摘要,那么什么是摘要呢? 举个例子: > 比如你给你女朋友写了一封邮件,确保没被人改过,你可以生成这样一份摘要 “第50个字是我,第100个字是爱, 第998个...