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typescript 对象

TypeScript中的对象是一个包含了一组属性和对应值的数据结构。它可以用来表示一个实体、一组数据等等。在TypeScript中，对象的类型可以使用接口或类型别名来定义。例如：interfacePerson{name:string;age:number;gender:'male'|'femal...

开发笔记 ·2024-09-01

typescript function

TypeScript函数是一段可重复使用的代码块，用于执行特定的任务。它可以接收参数并返回值。TypeScript函数可以使用不同的语法来定义，包括函数声明，函数表达式和箭头函数。函数声明：functionfunctionName(parameter1:type,parameter2:type):returnType{...

开发笔记 ·2024-09-01

typescript中文官网

TypeScript是一种静态类型的JavaScript超集，它可以编译成纯JavaScript，并且可以运行在任何浏览器、Node.js和任何支持ECMAScript标准的环境中。TypeScript提供了更好的可读性、可维护性和可扩展性，它支持ES6和ES7的最新特性，并且可以在编译时进行类型检查，避免了在运行时出...

开发笔记 ·2024-09-01

ORA-39792: Attribute “string” is not valid for subtypes(s) loaded into column string.

文档解释ORA-39792:Attribute“string”isnotvalidforsubtypes(s)loadedintocolumnstring.Cause:Attributespecifiedwasnotincludedinanysubtypesspecifiedforthecolu...

IT技术学习 ·2023-07-28

ORA-31219: DBMS_LDAP: PL/SQL – Invalid LDAP notypes.

文档解释ORA-31219:DBMS_LDAP:PL/SQL–InvalidLDAPnotypes.Cause:TherehasbeenanerrorintheDBMS_LDAPexplode_dnorexplode_rdnoperation.Action:PleasechecktheLDAPnotypes...

IT技术学习 ·2023-07-27

ORA-14142: ALTER INDEX VISIBLE|INVISIBLE may not be used with certain types of index

文档解释ORA-14142:ALTERINDEXVISIBLE|INVISIBLEmaynotbeusedwithcertaintypesofindexCause:UsingtheALTERINDEXVISIBLE|INVISIBLEstatementoncertaintypesofindexes(IOT-TOP,Cl...

IT技术学习 ·2023-07-26

ORA-30373: object data types are not supported in this context

文档解释ORA-30373:objectdatatypesarenotsupportedinthiscontextCause:Anobjectdatatypewasencounteredinanunsupportedcontext.Action:Re-specifytheexpressiontoavoidtheuseo...

IT技术学习 ·2023-07-26

ORA-26092: only LONG or LOB types can be partial

文档解释ORA-26092:onlyLONGorLOBtypescanbepartialCause:AcolumnwhichisnotaLONGorLOBhadthe*OCI_DIRPATH_COL_PARTIALflagassociatedwithit.*OnlyLONGorLOBtypecolumnscanbelo...

IT技术学习 ·2023-07-26

ORA-29892: indextypes with array DML do not support the given data type

文档解释ORA-29892:indextypeswitharrayDMLdonotsupportthegivendatatypeCause:TheuserspecifiedaREForaLONGdatatypewhichisnotsupportedinCREATE/ALTERINDEXTYPEWITHARRAYDML(...

IT技术学习 ·2023-07-23

ORA-32305: RepAPI materialized views with user-defined types are not supported

文档解释ORA-32305:RepAPImaterializedviewswithuser-definedtypesarenotsupportedCause:AnattemptwasmadetocreateaRepAPImaterializedviewwithuser-definedtypes.Action:Donot...

IT技术学习 ·2023-07-23

ORA-22326: cannot change a type to FINAL if it has subtypes

文档解释ORA-22326:cannotchangeatypetoFINALifithassubtypesCause:AnattemptwasmadetochangeatypewithsubtypestoFINAL.Action:Dropallsubtypesofthetargettypebeforechangingi...

IT技术学习 ·2023-07-23

ORA-24048: cannot create QUEUE_TABLE, user does not have access to AQ object types

文档解释ORA-24048:cannotcreateQUEUE_TABLE,userdoesnothaveaccesstoAQobjecttypesCause:AnattemptwasmadetoissuetheCREATE_QUEUE_TABLEcommand,buttheuserwhoissuedthecomman...

IT技术学习 ·2023-07-19

ORA-24318: call not allowed for scalar data types

文档解释ORA-24318:callnotallowedforscalardatatypesCause:Thiscallisvalidonlyforobjecttypes.Action:Verifythatthedata-typeforthisvariableisanobjecttypeORA-24318:callno...

IT技术学习 ·2023-07-18

ORA-32303: mviews with user-defined types cannot reference multiple master sites

文档解释ORA-32303:mviewswithuser-definedtypescannotreferencemultiplemastersitesCause:Formaterializedviewswithuser-definedtypes,thedefinitionquerycannotreferencetabl...

IT技术学习 ·2023-07-18

ORA-23482: column string of “string”.”string”: object types not allowed.

文档解释ORA-23482:columnstringof“string”.”string”:objecttypesnotallowed.Cause:ThecolumnisofObjectType.Action:Ensurethatallthecolumnsarenotof...

IT技术学习 ·2023-07-17