object

问题 I am using COM Object in my C# .NET 1.1 application. When the COM object is not registered on client machine, I get the exception: "COM object with CLSID {} is either not valid or not registered." (HRESULT:0x80040154) I know how to register the COM object using regsvr32. Our requirement is to identify the COM object which is not registered. We don't want to hardcode the name of the COM Object, rather identify it dynamically using the COM Exception/HResult. Any ideas? 回答1: Given the situation

问题 I started this little blog project and I think I have just made a mistake by not including fetch_assoc method. This is the code: $data = new database(); $sql = "SELECT * FROM post "; $article = $data->select($sql); foreach ($article as $value) : ?> <div class="blog-post"> <h2 class="blog-post-title"><?= $value["blog_title"]; ?></h2> and this is how the select methode look like: public function select($sql){ $result = $this->con->query($sql) or die($this->con->error.__LINE__); if ($result->num

问题 Given the following JSON object, using jq, how to get the last two elements for each item? I have been trying to find a solution with the help of jqplay.org but didn't get anywhere. While getting values out of objects having consistent key names is rather straightforward, I can't get my head around this. Input: { "foo": { "abc": { "key1": "value1" }, "bcd": { "key1": "value1" }, "cde": { "key1": "value1" }, "def": { "key1": "value1" }, "efg": { "key1": "value1" }, "fgh": { "key1": "value1" }

问题 I would like to better understand Python 3.x data model. But I do not find complete and precise explanation of Python Object behaviours. I am looking for references, it would be great if every case that I show below could be linked to a Python API reference or PEP or anything else valuable. Thank you further for your wise advises... Let say we have some complex Python structure for testing purposes: d1 = { 'id': 5432 ,'name': 'jlandercy' ,'pets': { 'andy': { 'type': 'cat' ,'age': 3.5 } ,'ray'

问题 I am reading up on how we ensure data encapsulation in python.One of the blog says "Data Encapsulation means, that we should only be able to access private attributes via getters and setters" Consider the following snippets from the blog: class Robot: def __init__(self, name=None, build_year=None): self.name = name self.build_year = build_year Now, if i create the object of the class as below: obj1=Robot() obj1.name('Robo1") obj1.build_year("1978") Currently, i can access the attributes

问题 I am reading up on how we ensure data encapsulation in python.One of the blog says "Data Encapsulation means, that we should only be able to access private attributes via getters and setters" Consider the following snippets from the blog: class Robot: def __init__(self, name=None, build_year=None): self.name = name self.build_year = build_year Now, if i create the object of the class as below: obj1=Robot() obj1.name('Robo1") obj1.build_year("1978") Currently, i can access the attributes

问题 In the code below, is it possible to convert x to the type you're passing into Activator.CreateInstance without knowing what it is ahead of time? I tried passing in typeof... but that doesn't work. var testClasses = AppDomain.CurrentDomain.GetAssemblies() .Single(a=>a.FullName.StartsWith("VerifyStuff")).GetTypes() .Where(t=>t.UnderlyingSystemType.Name.StartsWith("VerifyXXX")); var x = Activator.CreateInstance(testClasses.ElementAt(0)); Thanks! 回答1: You simply need to cast it: MyObject x =

问题 I want to create a new array containing contact objects if the value property in contacts matches the values in selectedContact . Any simpler way to do this? selectedContact: number[] = [0,2] //value contacts: Contact[] = [{ firstName:"Dan"; lastName:"Chong"; email:"danc@mail.com"; value:0; }, { firstName:"Mark"; lastName:"Wong"; email:"markw@mail.com"; value:1; }, { firstName:"Layla"; lastName:"Sng"; email:"layla@mail.com"; value: 2; }] Intended final result: newArray = [{ firstName:"Dan";

问题 I have this matrix algorithm problem: Input: const testObj = [ ['Anna', 10, 'Monday'], ['Anna', 15, 'Wednesday'], ['Beatrice', 8, 'Monday'], ['Beatrice', 11, 'Wednesday'], ['Anna', 4, 'Wednesday'], ['Beatrice', 5, 'Monday'], ['Beatrice', 16, 'Monday'] ] Output: let resultObj = [ ['Anna', 10, 'Monday'], ['Beatrice', 11, 'Wednesday'], ['Anna', 19, 'Wednesday'], ['Beatrice', 27, 'Monday'] ] Basically, if it's the same person (col0) and the same day (col2), get the sum of col1, and merge. I'm

问题 I am trying to make a list of coordinates directly adjacent to any given point in a 3d grid. For example, when given a vector {3,3,3}, the function should return the following list: [{4,3,3},{2,3,3},{3,4,3},{3,2,3},{3,3,4},{3,3,2}] (The values in curly braces are vector objects, not lists.) Here is my code: def touchingBlocks(sourceBlock): touching = [] for t in range(6): touching.append(sourceBlock) touching[0].x += 1 touching[1].x -= 1 touching[2].y += 1 touching[3].y -= 1 touching[4].z +=