编译这个接口声明我有一个错误
Kotlin: Platform declaration clash: The following declarations have the same JVM signature (Function(Lkotlin/jvm/functions/Function1;)V): fun Function(action: (Int) -> Unit): Unit defined in IInterface fun Function(action: (String) -> Unit): Unit defined in IInterface
interface
class MapBuilder<T,U> {
operator fun invoke(arg: T): MapBuilder<T, U> {
return this
}
operator fun invoke(arg: U): MapBuilder<T, U> {
return this
}
}
当然,由于JVM的限制,它不能工作。
Platform declaration clash: The following declarations have the same JVM signatur
我在FirebaseUserAuth类中有两个构造函数,它给出了一个错误:声明有相同的java签名。构造函数的参数不同。为什么它会给出相同的签名错误?如何解决这个问题?
class FirebaseUserAuth(private val auth: FirebaseAuth,
private val loginCallBack: ((LoginAuthData) -> Unit)?,
private val registerVM_CallBack: ((RegisterAuthData) -&g
Kotlin语言规范声称标识符是大小写敏感的,但以下代码会生成编译器错误消息,因为生成的getter/setter明显不区分大小写。 var a=10; var A=20
Clash.kt:1:1: error: platform declaration clash: The following declarations have the same JVM signature (getA()I):
fun <get-A>(): Int defined in root package
fun <get-a>(): Int defined in root
我是Kotlin的初学者,我正在尝试用以下代码创建一个基本的person类: class Person(_firstName: String, _lastName: String, _age: Int){
val firstName: String = _firstName
val lastName: String = _lastName
var age: Int = _age
fun setAge(newAge: Int){
age = newAge
}
} 我想给我的类添加一些基本的方法,比如getter和setter。当我创建
我定义了一个实现Neo4j的RelationshipType的枚举类
enum class MyRelationshipType : RelationshipType {
// ...
}
我得到以下错误:
Inherited platform declarations clash: The following declarations have the same JVM signature (name()Ljava/lang/String;): fun <get-name>(): String fun name(): String
我理解来自Enum类的Enum方法和来自
class loginViewModel(): BaseObservable() {
var errorEmail:String?=null
var errorPassword:String?=null
var userEmailAddress:ObservableField<String> = ObservableField()
var userPassword:ObservableField<String> = ObservableField()
fun setUserEmailAddress(email:Observa
我试图在kotlin中实现一个抽象类,它扩展了一个MultiValuedMap,当我试图重写keySet()方法时,我得到了错误
platform declaration clash: The following declarations have the same JVM signature (keySet()Ljava/util/Set;)
我的代码:
abstract class ConfigProperties<K, V>(delegate: Map<K, V>?): MultivaluedMap<String, String> {
prote
我想要创建一个数据类,它既可以接受list,也可以接受可变列表,如果列表是MutableList的实例,那么如果它是list,那么直接使它成为一个属性,然后将它转换为MutableList,然后存储它。
data class SidebarCategory(val title: String, val groups: MutableList<SidebarGroup>) {
constructor(title: String, groups: List<SidebarGroup>) :
this(title, if (groups is
使用下面的代码,我在IntelliJ IDEA 13.1.6和Kotlin插件0.11.91.AndroidStudio.3中得到了以下错误:
Platform declaration clash: The following declarations have the same JVM signature (getName()Ljava/lang/String;):
• public open fun getName(): kotlin.String?
• internal final fun <get-name>(): kotlin.String?
Java类,Java
我在试着创建一个类
class TestingModel {
companion object {
const val IMAGE_SLIDER: Int = 0
const val TRENDING_ADS: Int = 1
}
var viewType: Int? = 0
var imageSliderList: List<SlideModel>? = null
var adsList: List<HomeTrendingAdsModel>? = null
var categoryL
我试图创建两个几乎相同的方法,它们处理可空参数和非空参数的方式略有不同:
fun parse(type: Any) : MyObject {
return handleParse(type)
}
fun parse(type: Any?) : MyObject? {
if (type == null)
return null
return handleParse(type)
}
但是我在Android中得到了这个错误:
Platform declaration clash: The following declarations have the sa
我有这个扩展函数:
fun <T : View> Activity.bind(idRes: Int): Lazy<T> = lazy { findViewById<T>(idRes) }
正如您所看到的,我的通用T应该是View或一个后代。
每当我想使用它来获取一个View派生对象时,我都会执行以下选项之一:
val textView1 by bind<TextView>(R.id.text_view_1)
val textView2: TextView by bind(R.id.text_view_2)
非常好,但现在让我们看看问题所在,有时我
所以我想写一个函数,它接受一个第一类模块作为参数,在Base.Map和Base.Hashtbl上工作,但我遇到了一个问题。下面的代码说明了发生了什么:
module type Len_intf = sig
type t
val length : t -> int
end
let show (type a) (module L : Len_intf with type t = a) h =
printf "len: %d\n" @@ L.length h
let test (type a) h =
show (module Hashtbl : Len_i
在编译此程序时:
module type Inc =
sig
type t
val inc : t -> t
end
module type Dec =
sig
type t
val dec : t -> t
end
module Merger (I : Inc) (D : Dec with type t = I.t) =
struct
let merge x = x |> I.inc |> D.dec
end
module IntIn
我在Postgres 9.4中编写了一个用户定义函数来编码字符串:
CREATE OR REPLACE FUNCTION platform.encode_sig(sig text)
RETURNS bigint AS $BODY$
declare sig_id bigint;
begin
lock table platform.sig2encodings in access exclusive mode;
execute 'select sig_id from platform.sig2encodings where sig = '
我想确定数组类型是否是只读的。这包括ReadonlyArray和readonly前缀。
示例:
type a = ReadonlyArray<string>
type b = readonly string[]
相关的非公开TypeChecker代码是:
let globalReadonlyArrayType = <GenericType>getGlobalTypeOrUndefined("ReadonlyArray" as __String, /*arity*/ 1) || globalArrayType;
function isReadonlyAr
我一直试图运行./hack/update-all.sh脚本,并且在更新codegen时得到了这个错误:
$ ./hack/update-all.sh
Running in the silent mode, run with -v if you want to see script logs.
Running in short-circuit mode; run with -a to force all scripts to run.
Updating generated-protobuf
Updating codegen
# runtime
/usr/local/go/src/runtime
该错误遵循"ntp_crypto.c:2248:2: error:未知类型名称'DSA_SIG';您的意思是‘ECDSA_SIG’吗?“
make失败的输出如下:
tp_crypto.c: In function 'crypto_alice':
ntp_crypto.c:2188:13: warning: implicit declaration of function 'EVP_PKEY_get0_DSA'; did you mean 'EVP_PKEY_get0_RSA'? [-Wimplicit-function-
似乎Xcode 13 SwiftUI不支持+操作符。例如
Text("Not you? Hit the")
+ Text(" ‘Back’ ").fontWeight(.bold)
+ Text("arrow and use a different email.")
因为一个错误
ambiguous operator declarations found for operator
-----------------------------------
我是新到角2,我写了显示电影列表的代码,但它显示错误请检查我的代码.
下面是我的代码
component.ts:文件
import { Component} from '@angular/core';
@Component({
selector:'my-app',
template:`<h1>welcome to my shop</h1>
<p>we have the following movies available</p>
<div>
<p *ngfor=#movie o
我正在尝试使用getter方法实现一个接口,该方法与实现类的构造函数参数名称相匹配。
interface Car{
fun getModel(): Int
}
class Honda(val model: Int): Car {
override fun getModel(): Int {
}
}
如果Honda没有实现getModel(),我们就会得到一个Accidental Override错误。如果Honda实现了getModel(),我们就会得到一个Platform declaration clash错误。
我可以在Honda构造函数中更改参数的名称,这样就
当我试图为kotlin多平台定制上下文时,我遇到了这个问题。
Actual typealias 'ApplicationContext' has no corresponding expected declaration
The following declaration is incompatible because modality is different:
public final expect class ApplicationContext
androidMain
import android.app.Application
actual typealia
kotlin文件
interface Test {
fun test(message: String, delay: Int =100)
}
class A: Test
{
override fun test(message: String, delay: Int) {
}
}
我发现我不能在接口和类中使用@JvmOverloads。
如果在接口中添加@JvmOverloads,错误为@JvmOverloads annotation cannot be used on interface method;如果在类中添加@JvmOverloads,错误为platfor
我看到了下面关于javascript中的变量提升的文章。本文总结了以下三点。
1. All declarations, both functions and variables, are hoisted to the top of the containing scope, before any part of your code is executed.
2. Functions are hoisted first, and then variables.
3. Function declarations have priority over variable declarations, b
我正在使用gradle插件:
id 'org.springframework.boot' version '2.7.2'
拿着这个。我是不是遗漏了什么?
Could not resolve all files for configuration ':classpath'.
> Could not find org.springframework.boot:spring-boot-buildpack-platform:2.7.2.
Searched in the following locations:
有一些HTML看起来像这样:
<body>
Do
all
declarations for
the same
<TT>static</TT> function
or variable
have to include the storage class <TT>static</TT>?
</body>
当我使用$('body').children().wrapAll("<div class='container'&g
我正试图用BNFC编写一个编译器。我将使用BNFC来生成抽象语法树。但是,我得到了错误,我似乎不知道为什么。它似乎没有太多的文档。
以下是我所犯的错误:
Bad coercion in rule _. Prog ::= Block
Bad coercion in rule _. Declarations ::= Declaration ";" Declarations
Bad coercion in rule _. Declarations ::=
Bad coercion in rule _. Declaration ::= Var_declaration
Bad coerc
我正在测试SwiftLint的(实验性) analyze特性,并且能够生成报告。现在,我想让它们返回到Xcode中,并将它们显示为警告和错误。 使用xcode格式化程序/报告器创建了此结构的文件: /absolute/path/to/source/Scenes/UpdateOS/UpdateOSViewModel.swift:10:6: error: Unused Declaration Violation: Declarations should be referenced at least once within all files linted. (unused_declaration