nested

问题 I have a nested promise. The promise resolves or rejects based on another promise resolving or rejecting with a setTimeout of 0 so as not to clog: return new Promise((resolve, reject) => { promiseInst .then(value => { executeSoon(() => { dispatch({ ...action, status: "done", value: value }); resolve(value); }); }) .catch(error => { executeSoon(() => { dispatch({ ...action, status: "error", error: error.message || error }); reject(error); }); }); }); the executeSoon() is executeSoon(fn) {

问题 This question already has answers here : Iterating over dictionaries using 'for' loops (10 answers) Closed last year . I've been stuck on this all weekend, can anybody help me out please? I'm trying to parse a nested JSON response. I cannot seem to return the values I need, I just get errors about "string indices must be integers" whenever I try to parse it... What I am trying to achieve is: for each object in the JSON, extract the available_projects, and then the available_models from each.

问题 I am attempting to write a parameterized test for an interface Foo, which declares a method getFooEventInt(int, int). I have written a paramterized test that works for a single instance of Foo (a FooImpl object). public class FooTest { @ParameterizedTest @MethodSource("getFooEvenIntProvider") public void getFooEvenIntTest(int seed, int expectedResult) { Foo foo = new FooImpl(); Assertions.assertEquals(expectedResult, foo.getFooEvenInt(seed)); } private static Stream getFooEvenIntProvider() {

问题 The following code contains a few nested async calls within some foreach loops. I know the silverlight/wcf calls are called asyncrously -but how can I ensure that my wcfPhotographers, wcfCategories and wcfCategories objects are ready before the foreach loop start? I'm sure I am going about this all the wrong way -and would appreciate an help you could give. private void PopulateControl() { List<CustomPhotographer> PhotographerList = new List<CustomPhotographer>(); proxy

问题 I'm working on a function for calculations of a single numeric variable (double). It should takes it's components from another data frame that stores different equations which are broken up into their single pieces (I use linear regression equations here so it's about the two variables/columns slope and intercept). Depending on one condition (a name/specific string) which is stored in the equations table as well the function should use the slope and intercept from the same row. The actual

问题 I would like to change my mouse cursor when it is in a graphics item (MyCircle inherits from QObject and QGraphicsItem ). Had my class inherited from QWidget , I would have reimplemented enterEvent() and leaveEvent() and use it as follows : MyCircle::MyCircle(QObject *parent) : QWidget(parent), QGraphicsItem() // But I can't { rect = QRect(-100,-100,200,200); connect(this,SIGNAL(mouseEntered()),this,SLOT(in())); connect(this,SIGNAL(mouseLeft()),this,SLOT(out())); } void MyCircle::in() {

问题 I was searching a lot for this, maybe someone know a good answer for this. I tried to use this: (.span3>img[src="/images/img_$.png"])*4 But this creates: <div class="span3"><img src="/images/img_1.png" alt="" /></div> <div class="span3"><img src="/images/img_1.png" alt="" /></div> <div class="span3"><img src="/images/img_1.png" alt="" /></div> <div class="span3"><img src="/images/img_1.png" alt="" /></div> And I see the logic in this, why I got this result, but is there any way to use

问题 I have nested objects in my elastic search index of the following type "_source": { "NAME": "MNQ", "LAST_MOD_DATE": 1373587200000, "ACTIVE_FL": "Y", "ID": "1008", "USER": [ { "USR_ID": 499, "STATUS": "INACTV", "NAME": "ABC" }, { "USR_ID": 53, "STATUS": "ACTV", "NAME": "XYZ" } ] } And I have following use cases for querying the index: Get all active users for a particular id. Eg: I want to get users that are active for id 1008 which in this case would be user XYZ Get all active users. Eg: I

问题 I have a set of categories and their values stored as a list of hashes: r = [{:A => :X}, {:A => :Y}, {:B => :X}, {:A => :X}, {:A => :Z}, {:A => :X}, {:A => :X}, {:B => :Z}, {:C => :X}, {:C => :Y}, {:B => :X}, {:C => :Y}, {:C => :Y}] I'd like to get a count of each value coupled with its category as a hash like this: {:A => {:X => 4, :Y => 1, :Z => 1}, :B => {:X => 2, :Z => 1}, :C => {:X => 1, :Y => 3}} How can I do this efficiently? Here's what I have so far (it returns inconsistent values):

问题 I have a set of categories and their values stored as a list of hashes: r = [{:A => :X}, {:A => :Y}, {:B => :X}, {:A => :X}, {:A => :Z}, {:A => :X}, {:A => :X}, {:B => :Z}, {:C => :X}, {:C => :Y}, {:B => :X}, {:C => :Y}, {:C => :Y}] I'd like to get a count of each value coupled with its category as a hash like this: {:A => {:X => 4, :Y => 1, :Z => 1}, :B => {:X => 2, :Z => 1}, :C => {:X => 1, :Y => 3}} How can I do this efficiently? Here's what I have so far (it returns inconsistent values):