app生成主题的文章列表，还有app生成的技术要点_第2页

Go语言生成随机数

在日常开发中，生成随机数是很常见的需求，Go语言有两种方式来生成随机数，分别由 math/rand 和 crypo/rand 库来提供。为什么会提供两种方式呢？其实两者是有区别的，math 提供的是伪随机数，生成的随机序列不是真正的随机；而 crypo&nbs...

开发笔记 ·2024-02-24

PHP生成订单号的两种方法

在开发项目的时候经常有生成订单号的需求，这里列出两种生成20位订单号的常用方法。方法一：以下代码是14位当前时间加6位随机数，如果增减位数，只需修改末尾的数字6即可。<?phpFunctionbuild_order_no(){returndate('YmdHis').substr(implode(NULL,arr...

开发笔记 ·2023-12-10

APP开发的编程语言有哪些？

目前市面上主流的手机系统包括iOS和Android，而它们所要使用的编程语言也有所不同。针对iOS系统，主要的编程语言是Objective-C和Swift。Objective-C是苹果企业推出的一种面向对象的编程语言，也是iOS系统开发中的一种常用语言，它可以实现面向对象编程的特性，同时也能够与C语言进行兼容。而Swi...

开发笔记 ·2023-12-05

app上线指南（中文版）

目录 1.条款与条件 2.功能 3.元数据4.位置 5.推送通知 6.游戏中心 7.广告 8.商标与商品外观 9.媒体内容 10.用户界面 11.购买与货币 12.抓取与聚合 13.设备损...

开发笔记 ·2023-08-19

ORA-55470: OLS may not be applied with one or more models VPD-enabled

文档解释ORA-55470:OLSmaynotbeappliedwithoneormoremodelsVPD-enabledCause:AnattemptwasmadetoOLS-enableResourceDefinitionFramework(RDF)repositorywhenoneormoremodelsisV...

IT技术学习 ·2023-07-28

ORA-24384: Application context size is not initialized

文档解释ORA-24384:ApplicationcontextsizeisnotinitializedCause:Thesizeoftheapplicationcontextmustbeinitializedbeforepopulatingeachcontextelement.Action:IssueOCIAttrS...

IT技术学习 ·2023-07-28

ORA-29340: export file appears to be corrupted: [string] [string] [string]

文档解释ORA-29340:exportfileappearstobecorrupted:[string][string][string]Cause:ThisiscausedeitherbyacorruptedexportfileorbyanOracleinternalerror.Action:Makesurethee...

IT技术学习 ·2023-07-28

ORA-16273: invalid value for APPLY_SERVERS parameter

文档解释ORA-16273:invalidvalueforAPPLY_SERVERSparameterCause:attempttosetAPPLY_SERVERSparametertozeroortoavaluewhichwouldrequireMAX_SERVERStobeincreased.Action:setA...

IT技术学习 ·2023-07-28

ORA-39234: Data cannot be remapped under the direct path access method.

文档解释ORA-39234:Datacannotberemappedunderthedirectpathaccessmethod.Cause:Dataremappingwasrequestedonajobthatrequiresthedirectpathaccessmethod.Dataremappingcanonly...

IT技术学习 ·2023-07-28

ORA-16812: log apply service not running on apply instance recorded by the broker

文档解释ORA-16812:logapplyservicenotrunningonapplyinstancerecordedbythebrokerCause:LogapplyserviceswerenotrunningontheinstancetheDataGuardbrokerexpectedthemtoberunn...

IT技术学习 ·2023-07-28

ORA-16307: TSE key string successfully applied

文档解释ORA-16307:TSEkeystringsuccessfullyappliedCause:AnALTERSYSTEMSETENCRYPTIONKEYstatementwassuccessfullycommittedonthelogicalstandbydatabase.Action:Noactionnece...

IT技术学习 ·2023-07-28

ORA-55478: application table with multiple RDF models not suitable for VPD

文档解释ORA-55478:applicationtablewithmultipleRDFmodelsnotsuitableforVPDCause:AnattemptwasmadetoVPD-enableamodelwhichsharedtheapplicationtablewithanothermodel.Actio...

IT技术学习 ·2023-07-28

ORA-15414: Appliance mode requires at least string failure groups and either string or string disks in all failure groups.

文档解释ORA-15414:Appliancemoderequiresatleaststringfailuregroupsandeitherstringorstringdisksinallfailuregroups.Cause:Appliancemodecouldnotbeenabledbecauseitdidnotm...

IT技术学习 ·2023-07-28

ORA-32052: failed to start mapping service

文档解释ORA-32052:failedtostartmappingserviceCause:Themappingservicefailedtostartproperly.Action:CheckFMONtracefilesforerrors.ORA-32052表明应用程序无法启动映射服务。它是一个致命错误，必须修复才...

IT技术学习 ·2023-07-28

ORA-26724: only SYS is allowed to set the Capture or Apply user to SYS.

文档解释ORA-26724:onlySYSisallowedtosettheCaptureorApplyusertoSYS.Cause:TheCaptureorApplyuserwasspecifiedasSYSbyauserotherthanSYS.Action:SetSYSastheCaptureorApplyus...

IT技术学习 ·2023-07-27