StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
18549674
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2013-08-31T15:25:39.840
FavoriteCount
0
LastActivityDate
2013-09-09T01:56:05.713
LastEditDate
2013-09-09T01:56:05.713
LastEditorUserId
2034787
OwnerUserId
2034787
ParentId
18548265
PostTypeId
2
Score
14
ViewCount
0
LastEditorDisplayName
text
Body
<p>Just for fun, keep two numbers, starting as zeros, one for <code>X</code>, one for <code>O</code>. Update them by <code>or</code>ing with the moves. To check for a winner, first <code>and</code>, then <code>xor</code> with the mask.</p> <pre><code>277 & 273 ^ 273 0 ==> we have a winner. 276 & 273 ^ 273 1 ==> not. </code></pre> <p>277 == parseInt("100010101",2)<br /> 273 == parseInt("100010001",2)<br /> 276 == parseInt("100010100",2)</p> <p>For more fun, here's an example that plays <code>O</code> in your favorite JavaScript console:</p> <pre><code><!DOCTYPE html> <html> <head> <meta http-equiv="Content-type" content="text/html;charset=UTF-8"> </head> <body> <script> var x = 0, o = 0, count = 0, w = 0 ws = [0007,0070,0700,0111,0222,0444,0124,0421] function t1(v){ var w1 = 0 for (var i in ws) w1 |= !(v & ws[i] ^ ws[i]) return w1 } function t(i){ var ot = count % 2, m = 1 << (9 - i), bd = x | o if (!ot && (i > 9 || i < 1 || i != Math.floor(i))) return "Out of bounds." else if (m & bd) return "Position taken." if (ot){ var n1 = 0, a1 = -2 while (bd & (1 << n1)) n1++ var n = n1 while (n1 < 9){ var m1 = 1 << n1 if (!(bd & m1)){ var bt = -mx(x,o | m1,count + 1) if (bt > a1){ a1 = bt n = n1 } } n1++ } w = t1(o |= 1 << n) } else w = t1(x |= m) var b = "\n", p = 0400 while (p > 0){ if (p & x) b += "X" else if (p & o) b += "O" else b += "." if (p & 0110) b += "\n" p >>= 1 } if (w) b += "\n\n" + (ot ? "O" : "X") + " wins!" else if (!(bd ^ 0777)) b += "\n\nDraw." if (!ot){ console.log(b + '\n\n"""') count++ console.log(t(-1)) count++ } else return b + "\n" return '"' } function mx(x1,o1,c1){ var ot1 = c1 % 2, w1 = ot1 ? t1(x1) : t1 (o1), b1 = x1 | o1, p = 0400 if (w1) return -1 if (!(b1 ^ 0777)) return 0 var a = -2 while (p > 0){ if (!(b1 & p)) a = Math.max(a,-mx(ot1 ? x1 : x1 | p,ot1 ? o1 | p : o1,c1 + 1)) p >>= 1 } return a } console.log(' Plays O!' + '\nTo play, type t(MOVE); MOVE is from 1-9') </script> </body> </html> </code></pre>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POtesting tic tac toe win condition
  singulars
  PostTypePostTypeId
  PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USגלעד ברקן
UserOwnerUserId
1. USגלעד ברקן
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. COThis is a neat idea, +1.
  singulars
  PostPostId
  PO
  UserUserId
  USarshajii
2. CONice suggestion! If he updates the masks as the players make moves then this makes it very simple to check. However, I'd recommend writing the [integer literals](http://docs.oracle.com/javase/specs/jls/se7/html/jls-3.html#jls-3.10.1) for the masks in [octal](http://en.wikipedia.org/wiki/Octal) rather than decimal, since one octal digit would correspond to each row of the tic-tac-toe board. E.g., `273 == 0421`. It's way easier for me to translate that into the binary representation of the board in my head than a base-10 or even base-16 version of the mask.
  singulars
  PostPostId
  PO
  UserUserId
  USDaoWen

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.