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Uncaught TypeError: Cannot read properties of undefined (rea

vue页面UncaughtTypeError:Cannotreadpropertiesof undefined (reading‘install’)报错，页面全空白。然后发现是自己写的指令全局引用的原因使用了export导出export{preventReClick}复制代码...

开发笔记 ·2024-09-29

树莓派安装 wiringpi 失败、gpio readall 命令出错的解决方法

64位的树莓派不能够直接用pipinstallwiringpi命令装wiringpi，否则装的是armhf架构的不兼容一、彻底卸载装错的wiringpisudoapt-getremovewiringpisudoapt-getpurgewiringpihash-r二、安装适合64位ARM架构的wiringpi版本sudo...

开发笔记 ·2024-07-04

树莓派4B终端上输入gpio readall提示gpio: error while loading shared libraries: libcrypt.so.1: cannot open shared object file: Error 40

如果你的系统是64位的话，在使用最新的树莓派的64位系统。使用旧版本的WiringPi来进行IO控制的时候，由于原版已经不再更新，对于新的树莓派使用时存在指令无法使用的问题。 ...

开发笔记 ·2024-07-04

Vue3中的readonly怎么使用

在Vue3中，可以通过readonly函数将一个对象转化为只读的，使其属性成为只读的，无法被修改。使用方法如下：import{readonly}from'vue';constmyObject={name:'Alice',age:25};constreadonlyObject=readonly(myObject);//尝...

开发笔记 ·2024-03-10

ORA-29510: name, string.string, already used by an existing object

文档解释ORA-29510:name,string.string,alreadyusedbyanexistingobjectCause:ACREATEJAVAcommandattemptedtocreateasource,class,orresourceobjectwithanamethatisalreadyinuse...

IT技术学习 ·2023-07-28

ORA-55339: a virtual model already exists for the specified model-rulebase combination

文档解释ORA-55339:avirtualmodelalreadyexistsforthespecifiedmodel-rulebasecombinationCause:Avirtualmodelwithidenticalcomponentswasalreadypresent.Action:Chooseadiffer...

IT技术学习 ·2023-07-28

ORA-25197: an overflow segment already exists for the indexed-organized table

文档解释ORA-25197:anoverflowsegmentalreadyexistsfortheindexed-organizedtableCause:AnattemptwasmadetoADDOVERFLOWsegmentonanindex-organizedtablethatalreadyhasanoverfl...

IT技术学习 ·2023-07-28

ORA-32409: materialized view log on “string”.”string” already excludes new values

文档解释ORA-32409:materializedviewlogon“string”.”string”alreadyexcludesnewvaluesCause:Thematerializedviewlogontheindicatedtablealreadyexclud...

IT技术学习 ·2023-07-28

ORA-49429: File already exists and OVERWRITE option not specified [string]

文档解释ORA-49429:FilealreadyexistsandOVERWRITEoptionnotspecified[string]Cause:Theclientattemptedtocreateafilethatalreadyexists.Action:EitherremovethefileorusetheOV...

IT技术学习 ·2023-07-28

ORA-47000: Factor Type string already defined

文档解释ORA-47000:FactorTypestringalreadydefinedCause:TheobjectwiththisnameexistsalreadyAction:ChooseauniqueobjectnameandretrytheoperationORA-47000是一个通用错误，称为“因素类型st...

IT技术学习 ·2023-07-28

ORA-32162: Read/Write SQL method not registered

文档解释ORA-32162:Read/WriteSQLmethodnotregisteredCause:readSQL/writeSQLmethodwasNULLorwasnotregisteredAction:RegisterreadSQL/writeSQLbycallingputmethodinMapORA-321...

IT技术学习 ·2023-07-28

ORA-25146: EXTENT MANAGEMENT option already specified

文档解释ORA-25146:EXTENTMANAGEMENToptionalreadyspecifiedCause:InCREATETABLESPACE,theEXTENTMANAGEMENToptionwasspecifiedmorethanonce.Action:RemoveallbutoneoftheEXTENT...

IT技术学习 ·2023-07-28

ORA-53211: unable to read invalid ORDDicom object

文档解释ORA-53211:unabletoreadinvalidORDDicomobjectCause:ThevalueofthesourceattributeortheextensionattributeoftheORDDicomobjectwasnull.Action:SeetheOracleMultimedia...

IT技术学习 ·2023-07-28

ORA-16443: could not switch out of log string thread string

文档解释ORA-16443:couldnotswitchoutoflogstringthreadstringCause:ALTERSYSTEMFLUSHREDOTOSTANDBYcouldnotswitchoutofthecurrentlog.Action:Thiscanhappenifthereareoneormor...

IT技术学习 ·2023-07-28

ORA-19955: only one open thread is allowed to change the DBID

文档解释ORA-19955:onlyoneopenthreadisallowedtochangetheDBIDCause:Theoperationfailedbecausetherewereactivethreadsinthedatabase.Themostlikelycauseisthatthedatabasecra...

IT技术学习 ·2023-07-28