hierarchy

问题 Clojure's system for creating an ad hoc hierarchy of keywords is familiar to most people who have spent a bit of time with the language. For example, most demos and presentations of the language include examples such as (derive ::child ::parent) and they go on to show how this can be used for multi-method dispatch. In all of the slides and presentations that I've seen, they use the global hierarchy. But it is possible to put keyword relationships in independent hierarchies, by using (derive h

问题 I'm calling a method from viewcontroller in an appdelegate. When I was testing functionality I just used NSLog message which works fine (so the connection between viewcontroller and appdelegate is OK). The problem appears once I add a email form into this method. The message I receive is: Warning: Attempt to present <MFMailComposeViewController: 0x1fdc3990> on <ViewController: 0x1fd9e3b0> whose view is not in the window hierarchy! Anyone who know what to do? I know there are lot of topics

问题 I found this here: Category Hierarchy (PHP/MySQL) And i want to display that code, but it is not working correctly. I got the following Hierarchy: -Airsoft --Scopes That's all. But the code is displaying: -Airsoft --Scopes (So far so good) -Scopes <--- this one should not be here! Here's the code: public static function producten(){ $connection=Yii::app()->db; // assuming you have configured a "db" connection $sql = 'SELECT id, parent, naam FROM categories ORDER BY naam'; $command=$connection

问题 We have a table with one Measure [Discount Amount] on the COLUMNS and CROSSJOIN of [Product].[Product Categories] and [Geography].[Geography] on ROWS axis. We use ORDER function to sort entities by [Discount Amount] with option "BDESC". MDX: SELECT NON EMPTY {[Measures].[Discount Amount]} ON COLUMNS ,NON EMPTY Order ( { Hierarchize ( { CrossJoin ( { Hierarchize ( { [Product].[Product Categories].[All Products] ,[Product].[Product Categories].[All Products].Children } ) } ,{Hierarchize({

问题 I need something like this + scrollview | |__ moving content | |__ non moving content The tricky part is that I'm modifying an existing piece of code where I can't use the scrollview parent to set the "non moving content" as it's child. The non moving content must be a scrollview child. I was thinking of attaching it to the background view but I don't know how to access the UIScrollview's background view. 回答1: I believe the "recommended" way to do this is to override layoutSubviews in a

问题 I have several spreadsheets with data organized from left to right which I would like to create folders from. Every record is complete with no blanks unless that is the end of the row, so I am shooting for something the following: Col1 Col2 Col3 ------ ------ ------ Car Toyota Camry Car Toyota Corolla Truck Toyota Tacoma Car Toyota Yaris Car Ford Focus Car Ford Fusion Truck Ford F150 Car Toyota Camry Corolla Yaris Ford Focus Fusion Truck Toyota Tacoma Ford F-150 ... The only caveat to this

问题 Take this example: var graph = { "nodes": [ { "name": "Myriel", "group": 1 }, //0 { "name": "Napoleon", "group": 1 }, //1 { "name": "Mlle.Baptistine", "group": 1 }, //2 { "name": "Mme.Magloire", "group": 1 }, //3 { "name": "CountessdeLo", "group": 1 },//4 { "name": "Geborand", "group": 1 } // { "name": "Champtercier", "group": 1 } ], "links": [ { "source": 0, "target": 1, "value": 50}, { "source": 1, "target": 2, "value": 50}, { "source": 2, "target": 0, "value": 50}, { "source": 3, "target":

问题 I have htc desire and hierarchy viewer works fine. But when I plug the sensation than nothing happens I have refresh button but afrer clicking on it nothing happens :( where is the problem ? 回答1: Hierarchy View normally does not support hardware, only the emulator. For API Level 12 devices and higher, you can try embedding ViewServer into your app, though I have not yet tried this. It is also possible that you might have better results with a rooted device, though I have not tried that either

问题 I have generic class that extend other generic class. All of them is @MappedSuperclass . So they dont have own table in database. They are also abstract, so they dont have any objects. They are just skeleton for my entities @Entity My inheritance structure: Generic -> GenericDictionary -> GenericHierarchicalDictionary -> Unit Where Unit is @Entity class and have objects. @Entity public class Unit extends GenericHierarchicalDictionary<Unit> {} Unit entity has hierarchical structure which means

问题 I am relatively new to Rails and am working on a project that involves multiple, "nested" levels of data. I am having issues making the proper associations so I can get all the child elements of a model 3 levels higher. Here is an example of the models: class Country < ActiveRecord::Base has_many :states end class State < ActiveRecord::Base belongs_to :country has_many :cities end class City < ActiveRecord::Base belongs_to :state has_many :people end class Person < ActiveRecord::Base belongs