小编Sou*_*uet的帖子

我在 Jest 中遇到以下错误，但不清楚为什么即使添加了 testEnvironmentOptions

       TypeError: Cannot read properties of undefined (reading 'testEnvironmentOptions')
    
          at new JSDOMEnvironment (node_modules/jest-environment-jsdom/build/index.js:72:28)
          at async TestScheduler.scheduleTests (node_modules/@jest/core/build/TestScheduler.js:333:13)
          at async runJest (node_modules/@jest/core/build/runJest.js:404:19)

这是我的 Jest 配置package.json：

       TypeError: Cannot read properties of undefined (reading 'testEnvironmentOptions')
    
          at new JSDOMEnvironment (node_modules/jest-environment-jsdom/build/index.js:72:28)
          at async TestScheduler.scheduleTests (node_modules/@jest/core/build/TestScheduler.js:333:13)
          at async runJest (node_modules/@jest/core/build/runJest.js:404:19)

我尝试了res.render('index.html')和res.sendfile('index.html'),他们似乎都在做同样的事情.我没有发现Express文档非常有用.这两者有什么区别？

我正在尝试在 Go 中编写一个函数，该函数采用带有目录 URL 的 JSON 并执行 BFS 以查找该目录中的文件。当我找到作为目录的 JSON 时，代码会生成一个 URL 并且应该将该 URL 加入队列。当我尝试append()在循环中创建结构时，出现错误。

type ContentResp []struct {
    Name string `json:"name"`
    ContentType string `json:"type"`
    DownloadURL string `json:"download_url"`
}
...

var contentResp ContentResp
search(contentQuery, &contentResp)

for _, cont := range contentResp {
        append(contentResp, ContentResp{Name:cont.Name, ContentType:"dir", DownloadURL:cont.contentDir.String()})
}

./bfs.go:129: undefined: Name
./bfs.go:129: cannot use cont.Name (type string) as type struct { Name string "json:\"name\""; ContentType string "json:\"type\""; DownloadURL string "json:\"download_url\"" } in array or slice literal
./bfs.go:129: undefined: ContentType …

尝试将我的网络和张量移动到GPU时,我收到以下错误.我已经检查过网络参数是否已移动到GPU并检查每个批次的张量并移动它们(如果它们尚未在GPU上).但我仍然得到这个问题,说张量类型不匹配 - 一个是a torch.cuda.FloatTensor,另一个是torch.FloatTensor？有人能告诉我我做错了什么吗？谢谢.

我的代码:

class Train():
  def __init__(self, network, training, address):
    self.network    = network
    self.address    = address
    self.batch_size = training['batch_size']
    self.iterations = training['iterations']
    self.samples    = training['samples']
    self.data       = training['data']
    self.lr         = training['lr']
    self.noisy_lr   = training['nlr']
    self.cuda       = training['cuda']
    self.save       = training['save']
    self.scale      = training['scale']
    self.limit      = training['limit']
    self.replace    = training['strategy']
    self.optimizer  = torch.optim.Adam(self.network.parameters(), lr=self.lr)

  def tensor_to_Variable(self, t):
    if next(self.network.parameters()).is_cuda and not t.is_cuda:
        t = t.cuda()

    return Variable(t)

  def train(self):
    if self.cuda:
        self.network.cuda()
    dh = DataHandler(self.data)
    loss_fn …

我正在尝试使文本编辑器类似于Medium。我正在使用内容可编辑的段落标签，并将每个项目存储在数组中，并使用v-for呈现每个项目。但是，我在使用v-model将文本与数组绑定时遇到问题。似乎与v模型和contenteditable属性发生冲突。这是我的代码：

<div id="editbar">
     <button class="toolbar" v-on:click.prevent="stylize('bold')">Bold</button>
</div>
<div v-for="(value, index) in content">
     <p v-bind:id="'content-'+index" v-bind:ref="'content-'+index" v-model="content[index].value" v-on:keyup="emit_content($event)" v-on:keyup.delete="remove_content(index)" contenteditable></p>
</div>

在我的脚本中：

export default { 
   data() {
      return {
         content: [{ value: ''}]
      }
   },
   methods: {
      stylize(style) {
         document.execCommand(style, false, null);
      },
      remove_content(index) {
         if(this.content.length > 1 && this.content[index].value.length == 0) {
            this.content.splice(index, 1);
         }
      }
   }
}

我还没有在网上找到任何答案。

我是web dev和AngularJS的新手.我正在尝试使用指令ng-if只显示div块,如果从数据库返回的列表大于1,但它不起作用.我滥用指令了吗？我环顾四周,找不到任何有效的解决方案.目前,显示两个div并忽略ng-ifs.

<div>
    <div ng-if="listOfThings.length > 1">
        <h1> {{listOfThings.length}} </h1>
        </br>
        <div ng-repeat="thing in listOfThings">
           <label> {{ thing.name }} </label>
        </div>
    </div>
    <div ng-if="listOfThings.length == 1" class="col-sm-4 col-sm-offset-4">
        <h1> {{ listOfThings[0].name }} </h1>
        <iframe width="560" height="315" ng-src="{{ listOfThings[0].embed }}" frameborder="0" allowfullscreen></iframe>
    </div>
</div>

我尝试了这个代码,它在Plunker中工作,但由于某种原因不在我的代码中.在我的代码中,只有ng-app有效,但ng-if仍然没有.

    <div ng-app="ngAnimate">
        Click me: <input type="text" ng-model="check" ng-init="check='show'" /><br/>
        Show when check: {{check}}
        <input ng-if="check!='hide'" class="animate-if" placeholder="type the word 'hide'"/>
    </div>

当前目录是否有符号？例如，而不是键入当前目录的完整路径名，即 cp /User/Name/f1/f2/ /User/Name/f3/f4/f5 而您当前的目录是 /User/Name/f1/f2/ 是否有任何充当密码的符号？

我正在尝试将一些userdata打印出来作为一个字符串,但lua的文档相当弱到不存在.如何将userdata变量转换为字符串,以便将其写入文件？

抽象语法树中存在哪些类型信息？如何使用 AST 进行类型推断？我不明白当没有节点指示具体类型时，如何在给定 AST 的情况下导出类型输入和输出。类型是仅从树结构推断出来的吗？例如有一堆IfStatement(Statement)，所以它可能会返回一个 bool ？例如，javalang python 模块使用以下 AST 节点：

CompilationUnit(Node)
Import(Node)
Documented(Node)
Declaration(Node)
Type(Node)
TypeArgument(Node)
TypeParameter(Node)
Annotation(Node)
ElementValuePair(Node)
ElementArrayValue(Node)
ArrayInitializer(Node)
VariableDeclarator(Node)
InferredFormalParameter(Node)
Statement(Node)
SwitchStatementCase(Node)
ForControl(Node)
EnhancedForControl(Node)
Expression(Node)
EnumBody(Node)
VariableDeclaration(Declaration)
FormalParameter(Declaration)
TryResource(Declaration)
CatchClauseParameter(Declaration)
AnnotationMethod(Declaration)
BasicType(Type)
ReferenceType(Type)
TypeDeclaration(Declaration, Documented)
PackageDeclaration(Declaration, Documented)
ConstructorDeclaration(Declaration, Documented)
EnumConstantDeclaration(Declaration, Documented)
ClassDeclaration(TypeDeclaration)
EnumDeclaration(TypeDeclaration)
InterfaceDeclaration(TypeDeclaration)
AnnotationDeclaration(TypeDeclaration)
Member(Documented)
MethodDeclaration(Member, Declaration)
FieldDeclaration(Member, Declaration)
ConstantDeclaration(FieldDeclaration)
LocalVariableDeclaration(VariableDeclaration)
IfStatement(Statement)
WhileStatement(Statement)
DoStatement(Statement)
ForStatement(Statement)
AssertStatement(Statement)
BreakStatement(Statement)
ContinueStatement(Statement)
ReturnStatement(Statement)
ThrowStatement(Statement)
SynchronizedStatement(Statement)
TryStatement(Statement)
SwitchStatement(Statement)
BlockStatement(Statement)
StatementExpression(Statement)
CatchClause(Statement)
Assignment(Expression)
TernaryExpression(Expression)
BinaryOperation(Expression)
Cast(Expression)
MethodReference(Expression)
LambdaExpression(Expression)
Primary(Expression) …

我正在尝试编写一个基本的http服务器示例.我可以卷曲localhost:8080,但无法http.Get("127.0.0.1:8080")从客户端脚本联系服务器.我究竟做错了什么？

server.go:

import "fmt"
import "net/http"

func join(w http.ResponseWriter, req *http.Request) {
    fmt.Println("Someone joined")
}

func main() {
    fmt.Println("Listening on port 8080...")
    http.HandleFunc("/join", join)
    http.ListenAndServe(":8080", nil)
}

client.go:

import "net/http"
http.Get("127.0.0.1:8080/join")