hierarchy

问题 I need the following test @runwith(cache, memory) class CollectionA is -- this is a suite (aka folder) class Cache { -- this is a sub-suite (aka folder) @test testCache1() -- this is a method (aka file) @test testCache2() @test testCache3() } class RAM { -- this is a sub-suite (aka folder) @test testRAM1() @test testRAM2() } @test testIO() @test testKeyboard() @test testMouse() @test testMonitor() @test testPower() @test testBoot() Please note that only Cache and RAM need to be grouped. The

问题 Let's say I have a table such as this: CREATE TABLE IF NOT EXISTS `node_list` ( `nid` int(11) NOT NULL AUTO_INCREMENT, `parent` int(11) COMMENT \'Node`s parent (nid).\', PRIMARY KEY (`nid`) ) For a given node id, I want to get a count of all of its descendants. However: SELECT COUNT(*) FROM `node_list` WHERE `parent`=? Only returns the count of immediate children. What might a good way of doing this without a mess of for loops look like? 回答1: For a hierarchy with a known maximum number of

问题 I am trying to do something that should be simple but I'm missing something. I am trying to return some hierarchical data in grouped and ordered. a Rather than trying to explain, I am attaching a picture... heard they are worth a thousand words: Note that hard coded values are no good because the main selection criteria will be the article_id, and then ordered along the lines of the first 'root level' article_comment_id for the article followed by its sub-nodes, then the next 'root level'

问题 I have a table like this (Actually it contains more 6000 records) IdIndustry | IndustryCode | IndustryName | ParentId --------------------------------- 1 | IND | Industry | NULL 2 | PHARM | Pharmacy | 1 3 | FIN | Finance | NULL 4 | CFIN | Corporate | 3 5 | CMRKT | Capital M | 4 DDL: CREATE TABLE [dbo].[tblIndustryCodes]( [IdIndustry] [int] IDENTITY(1,1) NOT NULL, [IndustryCode] [nvarchar](5) NULL, [IndustryName] [nvarchar](50) NULL, [ParentId] [int] NULL, CONSTRAINT [PK_tblIndustryCodes]

问题 The way my application functions, is determined by Skype's view mode, due to the fact that my application is looking for windows of class TConversationWindow , which if in Default View is a child of tSkMainForm , and if in Compact View, it is not a child of tSkMainForm . Here is what I tried to do: Function IsCompactView:Boolean; Var Wnd : Hwnd; Begin Result := True; Wnd := FindWindow('TConversationForm',nil); if Wnd <> 0 then begin Wnd := GetParent(Wnd); // Custom function that grabs the

问题 I have created a collapsible tree to represent some biological data. In this tree the size of the node represents the importance of the node. As I have a huge data and also the sizes of the nodes vary,they overlap over each other. I need to specify the distance between the sibling nodes. I tried tree.separation() method but it didn't work. Code is as follows : tree.separation(seperator); function seperator(a, b) { if(a.parent == b.parent) { if((a.abundance == (maxAbd)) || (b.abundance ==

问题 I understand that: Faster access time > More expensive Slower access time > Less expensive I also understand that registers are the top of the hierarchy, and have the fastest access time. What I am having a hard time researching is why it's so expensive? To my knowledge, registers are literally circuits built directly into the ALU. If they're literally built into the CPU (the ALU especially), what actually makes it the most expensive? Is it the size (registers being the smallest, of course)?

问题 My app has a view controller hierarchy set up like this: UITabBarController | UINavigationController | | | UIViewController | UINavigationController | UIViewController All of my view controllers that are within this hierarchy override the method: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation and return YES - therefore the view controller should be able to rotate to any rotation - even upside down. However, within this setup none of the view

问题 Suppose we have a fixed type hierarchy, e.g. as depicted below. It is a well-defined tree, where each node has one parent (except for the root). Each type has an action associated with it, that should be performed upon successful matching. This does not mean that an action corresponds to a method on said type. It's just arbitrary association. What are intelligent ways to match objects against a type hierarchy? Each object should be matched against the most specific type possible. The objects

问题 I am trying to ORDER my all categories and sub-categories in a hierarchy: The main point is how to get them from MySQL ORDERLY (using POSITION field) Cat A --> position 10 Sub-Cat 1 --> position 10 Sub_Sub_Cat 1 --> position 20 Sub_Sub_Cat 2 --> position 10 Sub_Cat 2 --> position 30 Cat B --> position 20 Cat C --> position 30 MySQL code: CREATE TABLE IF NOT EXISTS `categories` ( `category_id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT, `position` smallint(5) unsigned, `parent_id` mediumint