You can use a recursive function to go through the whole tree: getDepth = function (obj) { var depth = 0; if (obj.children) { obj.children.forEach(function (d) { var tmpDepth = getDepth(d) if (tmpDepth > depth) { depth = tmpDepth } }) } return 1 + depth } The function works as follow: If the object … Read more
Another way of getting the enum values for use as a data source: <Window.Resources> <ObjectDataProvider MethodName=”GetValues” ObjectType=”{x:Type sys:Enum}” x:Key=”TestValues”> <ObjectDataProvider.MethodParameters> <w:Type2 TypeName=”w:Test+TestEnum” /> </ObjectDataProvider.MethodParameters> </ObjectDataProvider> </Window.Resources> … ItemsSource=”{Binding Source={StaticResource TestValues}}” Note that you still need the Type2Extension because of weirdness with TypeExtension and nested types. But you wouldn’t need the extra custom markup extension. This … Read more
You can’t nest script tags. The way script tags work, the browser reads the opening tag and then starts building up a string of the code therein without interpreting that code at all. It stops doing that the first time it sees the exact sequence < / s c r i p t >. The … Read more
Member x and y are non-static data member of Enclosing, which means that they only exist within a concrete object of Enclosing class. Without a concrete object, neither x nor y exist. Meanwhile, you are trying to refer to x and y without an object. That can’t be done, which is what the compiler is … Read more
Maybe you’re not using the latest version of a JSON for Java Library. json-simple has not been updated for a long time, while JSON-Java was updated 2 month ago. JSON-Java can be found on GitHub, here is the link to its repo: https://github.com/douglascrockford/JSON-java After switching the library, you can refer to my sample code down … Read more
Subroutines are stored in a global namespace at compile time. In your example b(); is short hand for main::b();. To limit visibility of a function to a scope you need to assign an anonymous subroutines to a variable. Both named and anonymous subroutines can form closures, but since named subroutines are only compiled once if … Read more
There are two basic methods for doing this: adjacency lists and nested lists. Take a look at Managing Hierarchical Data in MySQL. What you have is an adjacency list. No there isn’t a way of recursively grabbing all descendants with a single SQL statement. If possible, just grab them all and map them all in … Read more
>>> map(list.__add__, L1, L2) [[1, 2, ‘a’, ‘b’], [3, 4, ‘c’, ‘d’], [5, 6, ‘e’, ‘f’]]
I would store it in the order you want it back out. Or sort it after you pull it out, on the client side. If neither of those are possible, you can use the aggregation framework: > db.test.insert({answers: [ … {name: ‘paul’, state: ‘RU’}, … {name: ‘steve’, state: ‘US’}, … {name: ‘mike’, state: ‘DE’}]}); > … Read more
Here is one way to write the function depth = lambda L: isinstance(L, list) and max(map(depth, L))+1 I think the idea you are missing is to use max()