flatten

问题 given a list of documents, I want to obtain the pairs that shares at least one token. To do this I wrote the code below, that do that through an inverted index. object TestFlatMap { case class Document(id : Int, tokens : List[String]) def main(args: Array[String]): Unit = { val documents = List( Document(1, List("A", "B", "C", "D")), Document(2, List("A", "B", "E", "F", "G")), Document(3, List("E", "G", "H")), Document(4, List("A", "L", "M", "N")) ) val expectedTokensIds = List(("A",1), ("A"

问题 Disclaimer: I've been fighting against this problem since 2 days (I've read a lot of similar questions on SO).. so be patient, I'm missing something about the Group By with Linq and asking for help. The Class Structure Populating the sample data I have a list of Macrotab . Each Macrotab object contains a list of Tab . Each Tab object inside with Slot inside. List<MacroTab> hierarchaldata = CreateHierarchaldata(); *For keeping the question easy to read I've moved the CreateHierarchaldata,

问题 I have an array of object with hierarchical structure, something like this: [ {name: 'ParentOne', children: [ {name: 'ParentOneChildOne'}, {name: 'ParentOneChildTwo', children: [ {name: 'ParentOneChildTwoGrandChildOne'}, ]}, ]}, {name: 'ParentTwo', children: [ {name: 'ParentTwoChildOne', children: [ {name: 'ParentTwoChildOneGrandChildOne'}, {name: 'ParentTwoChildOneGrandChildTwo'} ]}, {name: 'ParentTwoChildTwo'} ]} ]; I want to flatten it: [ {name: 'ParentOne'}, {name: 'ParentOneChildOne'},

问题 I have an array of object with hierarchical structure, something like this: [ {name: 'ParentOne', children: [ {name: 'ParentOneChildOne'}, {name: 'ParentOneChildTwo', children: [ {name: 'ParentOneChildTwoGrandChildOne'}, ]}, ]}, {name: 'ParentTwo', children: [ {name: 'ParentTwoChildOne', children: [ {name: 'ParentTwoChildOneGrandChildOne'}, {name: 'ParentTwoChildOneGrandChildTwo'} ]}, {name: 'ParentTwoChildTwo'} ]} ]; I want to flatten it: [ {name: 'ParentOne'}, {name: 'ParentOneChildOne'},

问题 I have an array of object with hierarchical structure, something like this: [ {name: 'ParentOne', children: [ {name: 'ParentOneChildOne'}, {name: 'ParentOneChildTwo', children: [ {name: 'ParentOneChildTwoGrandChildOne'}, ]}, ]}, {name: 'ParentTwo', children: [ {name: 'ParentTwoChildOne', children: [ {name: 'ParentTwoChildOneGrandChildOne'}, {name: 'ParentTwoChildOneGrandChildTwo'} ]}, {name: 'ParentTwoChildTwo'} ]} ]; I want to flatten it: [ {name: 'ParentOne'}, {name: 'ParentOneChildOne'},

问题 I am using javascript and I have nested json object getting from mongodb. "abc": [ { "a": "01AABCE2207R1Z5", "b": "Y", "c": [ { "ca": "A", "cb": "AflJufPlFStqKBZ", "cc": "S008400" }, { "cx": "A", "cy": "AflJufPlFStqKBZ", "cz": "S008400" } ] }, { "a": "01AABCE2207R1Z5", "b": "Y", "c": [ { "ca": "A", "cb": "AflJufPlFStqKBZ", "cc": "S008400" }, { "cx": "A", "cy": "AflJufPlFStqKBZ", "cz": "S008400" } ] } ] Above schema have fixed fields there will no changes in schema. Now I want to make it as

问题 I am using javascript and I have nested json object getting from mongodb. "abc": [ { "a": "01AABCE2207R1Z5", "b": "Y", "c": [ { "ca": "A", "cb": "AflJufPlFStqKBZ", "cc": "S008400" }, { "cx": "A", "cy": "AflJufPlFStqKBZ", "cz": "S008400" } ] }, { "a": "01AABCE2207R1Z5", "b": "Y", "c": [ { "ca": "A", "cb": "AflJufPlFStqKBZ", "cc": "S008400" }, { "cx": "A", "cy": "AflJufPlFStqKBZ", "cz": "S008400" } ] } ] Above schema have fixed fields there will no changes in schema. Now I want to make it as

问题 Can anyone help with the general format for flattening a 3D array using MPI? I think I can get the array 1 dimensional just by using (i+xlength*j+xlength*ylength*k), but then I have trouble using equations that reference particular cells of the array. I tried chunking the code into chunks based on how many processors I had, but then when I needed a value that another processor had, I had a hard time. Is there a way to make this easier (and more efficient) using ghost cells or pointer juggling

问题 How do you achieve the following in linq? I feel there should be a Linq alternative. var foods = new Dictionary<string, List<string>>(); foods.Add("Cake", new List<string>() { "Sponge", "Gateux", "Tart" }); foods.Add("Pie", new List<string>() { "Mud", "Apple" }); foods.Add("Roll", new List<string>() { "Sausage" }); var result = new List<Tuple<string, string>>(); foreach (var food in foods) { foreach (var detail in food.Value) { result.Add(new Tuple<string, string>(food.Key, detail)); } } ie

问题 Good morning, given the below data structure (in JSON for ease of reading) [ { "parent": "root", "active": "1", "label": "Index", "route": "/", "children": [ { "parent": "/", "active": "1", "label": "Products", "route": "/products", "children": [ { "parent": "/products", "active": "0", "label": "Test", "route": "/test" } ] } ] }, { "parent": "root", "active": "1", "label": "404", "route": "/404" }, { "parent": "root", "active": "1", "label": "Login", "route": "/login" } ] I am having major