nested

问题 So I have a dictionary of the form Dictionary<int, Dictionary<int, Object>> myObjects and I would like to flatten this to a List<Object> flattenedObjects as simply as possible. I tried to come up with a clever solution, but so far all I've gotten to work is a solution with two nested foreach -loops that iterate over all of the elements, but I suppose there should be a nicer way of accomplishing this with LINQ. 回答1: try this List<Object> flattenedObjects = myObjects.Values.SelectMany(myObject

问题 import numpy as np for i in range(len(x)): if (np.floor(N[i]/2)==N[i]/2): for j in range(N[i]/2): pxd[i,j]=x[i]-(delta*j)*np.sin(s[i]*np.pi/180) pyd[i,j]=y[i]-(delta*j)*np.cos(s[i]*np.pi/180) else: for j in range((N[i]-1)/2): pxd[i,j]=x[i]-(delta*j)*np.sin(s[i]*np.pi/180) pyd[i,j]=y[i]-(delta*j)*np.cos(s[i]*np.pi/180) Does anyone has an idea of solving this problem? Running these codes successfully? Thanks, Jeremy 回答1: N=np.floor(np.divide(l,delta)) ... for j in range(N[i]/2): N[i]/2 will be

问题 I would like to get all media objects that are of type "VIDEO". Here is my query which always returns all media objects regardless of the type: ?fields=media{media_type,insights.metric(reach, impressions)}&filtering=[{field: "media_type", operator: "EQUAL", value: "VIDEO"}] "media.media_type" is also not working. Thanks in advance! output format: "data": [ { "media_type": "IMAGE", "insights": { "data": [ { "name": "reach", "period": "lifetime", "values": [ { "value": 1476 } ], "title":

问题 I'm trying to learn Dynamic Proxies in Java. I know how they work but I can't find a solution to my problem: given an interface and its implementation with methods a(), b() and c() nested one into the other (let's say a() calls b() which calls c()), I would like to proxy my object to log EACH call to the methods. So I code my InvocationHandler such as the invoke() method prints a log-line before the execution. But when I call proxy.a(), only the call of method a() is logged and not the whole

问题 So I'm in college and I'm writing a program using C# which is ALMOST done except for this button. I don't want the answer because I'll never learn that way, but I'm writing a program using Heron's method where the user has to input 3 numbers to determine if these numbers can be used as sides of a triangle. The one button I am confused with is the Finding the Maximum button which wants the program to show which number entered is the highest. The professor wants this code to be written using

问题 I'm trying to get the name and reading type="alpha". I'm a beginner and English is not my first language, please pardon me. I've read about DOM, SAX, Simple, other StackOverflow posts, other samples but I don't understand and will like to learn about XMLPullParser in this case. Sample XML below: <feed> <title>Title</title> <item> <entry> <name>Name1</name> <record date="20001231"> <reading type="alpha" value="100"/> <reading type="beta" value="200"/> </record> </entry> <entry> <name>Name2<

问题 I have a lot of nested dictionaries, I am trying to find a certain key nested inside somewhere. e.g. this key is called "fruit". How do I find the value of this key? 回答1: @Håvard's recursive solution is probably going to be OK... unless the level of nesting is too high, and then you get a RuntimeError: maximum recursion depth exceeded . To remedy that, you can use the usual technique for recursion removal: keep your own stack of items to examine (as a list that's under your control). I.e.:

问题 I have a nested hash: { ["X", 1, 2, 3]=> { ["X", "O", 2, 3]=> { ["X", "O", "X", 3]=>["X", "O", "X", "O"] } } } I want to merge a given nested hash: { ["X", 1, 2, 3]=> { ["X", "O", 2, 3]=> { ["X", "O", 2, "X"] => ["X", "O", "O", "X"] } } } such that: { ["X", 1, 2, 3]=> { ["X", "O", 2, 3]=> { ["X", "O", "X", 3]=>["X", "O", "X", "O"], ["X", "O", 2, "X"] => ["X", "O", "O", "X"] } } } What's the best way? The hashes I'll be merging will have an equivalent key at an arbitrary depth of nested-ness.

问题 To have less redundant XAML markup i try to get a radiobutton-type selection control to be populated generically, i.e. i use an ItemsControl with an enum as ItemsSource and create a DataTemplate which shows which item is selected by checking whether the enum value of the item is the same as the current setting. This alone cannot be done using a simple converter or DataTrigger because two bindings are needed, so i created a generic MutliValueConverter to check for equality: <CheckBox

问题 For example, if I have: td { font-size: 1.3em } h2 { font-size: 2em } h3 { font-size: 1.6em } p { font-size: 1.2 } And I have headings/paragraphs inside my table-cells, I know that I can avoid compounding the font-sizes by the following: td h2, td h3, td p { font-size: 1em } Which would result in the headings/paragraphs in my table-cells having font-size of 1.3em (that of the td). But what I'm looking for is a nice, clean way for each child element to have it's original font-size, not that of