我有一些看起来像的数据： { _id: "5e985a07feddae7617ac44f6", age: 24, eyeColor: "brown", name: "Cummings Baxter", gender: "male", company: "VELOS", email: "cummingsbaxter@velos.com", phone: "+1 (907) 482-2451", tags: ["labore", "el...

I need the search bars to filter out the results by first and last name as shown in this link, https://storage.googleapis.com/hatchways-app.appspot.com/assessments/data/frontend/f-1/735fae21-9b8d-4431-8978-5098a2217fd2/part3.webm 以及加号按钮可将百分比展开回列表，而不是平均值。 h...

我有一个费用跟踪器，在其中将费用添加到表中，并将其保存到localStorage并将这些项目显示在UI上。但是，当我删除一个项目时，它并没有像应该的那样从localStorage中删除。它从UI中删除，然后在刷新后返回。 I used a Brad Traversy tutorial (https://www.youtube.com/watch?v=JaMCxVWtW58&t=811s) for help on structure as I am trying to understand Object Or...

我正在尝试基于对象数组创建搜索，并对这些数据采用以下格式进行反应： const data = [ {"category 1" : [ { "name": "Orange", "desc": "juice, orange, Water" }, { "name": "Ananas", "desc": "juice, ananas, water" } ] }, {"category 2" : [ ...

我正在尝试使用dplyr进行过滤。我只能过滤4组中的1组，对于其他3组，输出将变为空白。 我有以下数据： "29", "29", "30", "30", "30", "30", "4", "4", "4", "4", "4", "5", "5", "5", "5", "5", "6", "6", "6", "6", "16", "16", "16", "16", "17", "17", "17", "17", "17", "18", "18", "18", "18", "52", "52", "52"...

I am trying to develop a very simple dashboard with some information. I'm trying to add in a search filter into my code so that I can narrow my data by names. In many other tutorials, I found that they have common used name.toLowerCase().indexOf(this.state...

Let's imagine mtcars is an ordered data.frame and that I want the maximum over the previous rows. Then, I can do: > mtcars %>% mutate(test = cummax(wt)) mpg cyl disp hp drat wt qsec vs am gear carb test 1 21.0 6 160.0 110 3.90 2.620 16.46 0 ...

由于我是React的新手，因此我使用了filter和map从数组列表中选择数组。我得到了预期的输出。现在我想通过渲染值设置this.state.search。我该怎么做？ 以下是我的代码的图片： import React, { Component } from 'react'; import { NativeSelect } from '@material-ui/core'; export default class Test extends Component { constructor() { ...

我有一个对应于HTML元素的对象数组。这些卡应根据条件是否满足而出现/消失。我已经将HTMLCollection转换为Javascript数组，因此可以在其上使用数组方法。 我还使用HTML选择标记来生成javascript对象以用作过滤器。我需要知道如何通过对象上的所有键/值对过滤数组。现在，我的代码仅满足一个条件，即最近的条件。 这是HTML： <label for="numProperties"></label> <label for="location"></label> <label for="r...

我收到错误消息，试图在我的数据集中查找变量的摘要统计信息： **Error in UseMethod("filter_") : no applicable method for 'filter_' applied to an object of class "character" $ operator is invalid for atomic vectors Error in UseMethod("tbl_vars") : no applicable method for 'tbl_vars' ap...

我有一个这样的javascript对象： var obj = { HEALTH: { business: "HEALTH", percentage: 0, outerCriteria:{ DEFAULT:[ { thePercentage : 10, innerCriteria : { min: '10', ...

我想从列表中删除具有来自另一个列表的条件值的项目。这是对象 public class Student{ private String name; private String age; private List<Course> listCourses; //Setters and getters } public Class Course{ private String courseName; private List<CourseDetail> listCoursesDetail; //Set...

我有以下数据框： df = pd.DataFrame({ 'cluster': ['A','B','C','A','B','C','D','D'], 'profit': [-1.0,1.5,1,0.5,3.0,-2,-1, -2] }) 在输出到另一个数据帧之前，我将执行一系列按操作分组的操作，其中大部分我必须开始工作。 df['cluster_total_profit'] = df.groupby(['cluster'])['profit'].transform('sum') ...

我将使用以下两个数据帧来演示我的问题。 val datF1= Seq((1,"everlasting",1.39),(1,"game", 2.7),(1,"life",0.69),(1,"learning",0.69), (2,"living",1.38),(2,"worth",1.38),(2,"life",0.69),(3,"learning",0.69),(3,"never",1.38)).toDF("ID","token","value") datF1.s...

我看到了这样的功能： getDish(id: number): Dish { return DISHES.filter((dish) => (dish.id === id))[0]; } But I can't understand why does it use [0] after filter function? I mean what the return value of filter looks like and why does it specifies the index 0...

This question already has answers here: ...

我得到了一个我没有受到太多关注的东西，除了一个要素，我已经使所有工作正常。本质上，我想过滤代码中的“ ev3_4”返回。我不确定功能是否正确。我正在从外部来源获取数据。并且信息位于我能够正确返回的数组的嵌套数组中。 <template> <!-- the array for the ev data --> <div id="ev-deck" class="content"> <div id="text-box-ev" class="field"> <div class=...

我已经编辑了Adapter类并扩展了filterable类。我的搜索功能有效，但是我无法获得当前列表。 这是我的适配器类： public class ListViewAdapter extends BaseAdapter implements Filterable{ Context context; private List<Student> studentList; private List<Student> orginStudentList; public ListViewAdapter(Contex...