object

How to create a nested array of objects from flat array of objects?

由 别等时光非礼了梦想. 提交于 2021-01-01 21:16:25
问题 I am still learning and need some guidance on how to form a complex nested array of objects from a JSON flat file. Here is the current input: [ {"id":"US-AL","state":"Alabama","industry":"All","category":"Cable Related Services","itemid":"12290","item":"Basic Cable Services","answer":"Exempt","explanation":"The sale of these services is not subject to sales tax.","citation":"Ala. Code sec. 40-23-1; Ala. Code sec. 40-23-2"}, {"id":"US-AL","state":"Alabama","industry":"All","category":"Cable

Objects does not include methods in the list comprehension

由 狂风中的少年 提交于 2020-12-31 05:54:55
问题 This question is related to my previous question and Bill's response there. I have a class named StrucData in subfile.py class StrucData: def __init__(self, name): self.name=name def loadData(self, size=1, cost=1): self.size=size self.cost=cost return self In the main file I: call the subfile, create a list of data names loop through the list to instantiate the objects; and load data using 'loadData' method for each object (I'm using the same 'size' and 'cost' to make this example easy.) in

Javascript get value from an object inside an array

由 非 Y 不嫁゛ 提交于 2020-12-28 20:55:50
问题 I have an object with key value pairs inside an array: var data = [ { "errorCode":100, "message":{}, "name":"InternetGatewayDevice.LANDevice.1.Hosts.HostNumberOfEntries", "value":"2" } ]; I want to get the value of "value" key in the object. ie, the output should be "2". I tried this: console.log(data[value]); console.log(data.value); Both logging "undefined". I saw similar questions in SO itself. But, I couldn't figure out a solution for my problem. 回答1: You are trying to get the value from

JavaScript - Get an array object from a string variable

由 廉价感情. 提交于 2020-12-27 07:16:04
问题 var list = "OVER_30 = true || NUM_OF_JACKETS >=3 || COUNT_TOTAL == 500"; var array = getList(); // array[0].OVER_30 = true, array[0].NUM_OF_JACKETS = 5, array[0].COUNT_TOTAL = 500; if (array[0].OVER_30 = true || array[0].NUM_OF_JACKETS >=3 || array[0].COUNT_TOTAL == 500) { <--- What I want to accomplish return true; } I have a string variable called list that contains the conditions. How can I add array[0]. in front of each condition to combine the array and string? var format = array[0]. +

JavaScript - Get an array object from a string variable

由 人盡茶涼 提交于 2020-12-27 07:15:41
问题 var list = "OVER_30 = true || NUM_OF_JACKETS >=3 || COUNT_TOTAL == 500"; var array = getList(); // array[0].OVER_30 = true, array[0].NUM_OF_JACKETS = 5, array[0].COUNT_TOTAL = 500; if (array[0].OVER_30 = true || array[0].NUM_OF_JACKETS >=3 || array[0].COUNT_TOTAL == 500) { <--- What I want to accomplish return true; } I have a string variable called list that contains the conditions. How can I add array[0]. in front of each condition to combine the array and string? var format = array[0]. +

Remove Characters from All Keys in an Object (Lodash OK)

由 自闭症网瘾萝莉.ら 提交于 2020-12-27 06:26:06
问题 I have a bothersome length of characters before all keys in this object. Since they are all the same, I would like to do a .map() or forEach() or something with a .slice() in it to remove the first n characters. How is this done to all keys in the object? I should say that we are already importing Lodash in the project so I can use that. So I need to turn this: { 'remove.this.string.a': "apple", 'remove.this.string.b': "banana", 'remove.this.string.c': "carrot", 'remove.this.string.d':

Remove Characters from All Keys in an Object (Lodash OK)

由 蹲街弑〆低调 提交于 2020-12-27 06:26:06
问题 I have a bothersome length of characters before all keys in this object. Since they are all the same, I would like to do a .map() or forEach() or something with a .slice() in it to remove the first n characters. How is this done to all keys in the object? I should say that we are already importing Lodash in the project so I can use that. So I need to turn this: { 'remove.this.string.a': "apple", 'remove.this.string.b': "banana", 'remove.this.string.c': "carrot", 'remove.this.string.d':

window.opener用法

由 。_饼干妹妹 提交于 2020-12-26 07:56:12
在 JS 中，window. opener 只是对弹出窗口的母窗口的一个引用。比如： a.html中，通过点击按钮等方式window.open出一个新的窗口b.html。那么在b.html中，就可以通过window. opener （省略写为 opener ）来引用a.html，包括a.html的document等对象，操作a.html的内容。 假如这个引用失败，那么将返回null。所以在调用 opener 的对象前，要先判断对象是否为null，否则会出现“对象为空或者不存在”的 JS 错误。 在一般的用法中，只是用来解决关闭窗口时不提示弹出窗口， 而对它更深层的了解一般比较少。其 实 window.opener是指调用window.open方法的窗口。 在工作中主要是用来解决部分提交的。这种跨页操作对工作是非常有帮助的。 如果你在主窗口打开了一个页面，并且希望主窗口刷新就用这个，打开页面的window.opener就相当于 主窗口的window。 主窗口的刷新你可以用 window.opener.location.reload()； 如果你用虚拟的目录：如struts的*.do会提示你重试 你可以改成这样 window.opener.yourformname.submit() 就好了 2〉 在应用中有这样一个情况， 在A窗口中打开B窗口，在B窗口中操作完以后关闭B窗口

Iterate over dictionary of objects

由 谁说我不能喝 提交于 2020-12-26 06:21:25
问题 I have a dictionary of objects which contains the "Names/Ranges" within a spreadsheet. As I process the spreadsheet I need to update the value associated with a range. The class to hold this info looks like this: class varName: name = None refersTo = None refersToR1C1 = None value = None def __init__(self, name, refersTo, refersToR1C1, value): self.name = name self.refersTo = refersTo self.refersToR1C1 = refersToR1C1 self.value = value I create the dictionary as follows: staticNames = {}

I have two lists containing the same objects. How do I change one list without changing the other? [duplicate]

由 倖福魔咒の 提交于 2020-12-25 18:25:22
问题 This question already has answers here : How do you make a deep copy of an object? (19 answers) Closed 4 years ago . I first noticed this problem when I only put the objects in listOfRates and then created inverseListOfRates by copying it. But even using this method, I can't alter one list without altering the other. How do I solve this issue? List<HistoricRate> listOfRates = new ArrayList<HistoricRate>(); List<HistoricRate> inverseListOfRates = new ArrayList<HistoricRate>(); for
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