StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
6520359
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-06-29T12:06:10.393
FavoriteCount
0
LastActivityDate
2011-06-29T12:06:10.393
LastEditDate
LastEditorUserId
0
OwnerUserId
66131
ParentId
6517752
PostTypeId
2
Score
3
ViewCount
0
LastEditorDisplayName
text
Body
This sounds like a good situation for the observer pattern. This is a sample of that in ruby: <pre><code>require 'observer' class Node attr_accessor :id @@current_node_id = 0 def initialize @@current_node_id += 1 id = @@current_node_id end include Observable attr_reader :value protected def value=(new_value) return if @value == new_value old_value = @value @value = new_value changed notify_observers(id, old_value, @value) end end class ValueNode < Node def initialize(initial_value) super() @value = initial_value end def value=(new_value) super(new_value) end end class SumNode < Node def initialize(*nodes) super() @value = nodes.map(&:value).inject(0, &:+) nodes.each do |node| node.add_observer(self) end end def update(id, old_value, new_value) self.value = self.value - old_value + new_value end end def test v1 = ValueNode.new 4 v2 = ValueNode.new 8 sum = SumNode.new(v1, v2) sum2 = SumNode.new(v1, sum) v2.value = 10 p sum.value p sum2.value end test() </code></pre> Notice how the value of <code>SumNode</code> isn't recalculated every time it is requested - instead it is updated when one of its value nodes is updated. This works recursively, so that inner <code>SumNodes</code> also trigger updates. As the notification includes the unique <code>id</code> of the node, it is possible to write more complex <code>Node</code> types, such as ones that contain formulas. See <a href="http://www.ruby-doc.org/stdlib/libdoc/observer/rdoc/index.html" rel="nofollow">http://www.ruby-doc.org/stdlib/libdoc/observer/rdoc/index.html</a> for more details on Observable
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POBest way to program an "Excel-like" network of influence in Ruby?
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USDavid Miani
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.