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Facebook database design?
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1 bob@bob.com bobbie M 1/1/2009 New York City
2 jon@jon.com jonathan M 2/2/2008 Los Angeles
3 joe@joe.com joseph M 1/2/2007 Pittsburgh
Table Friends
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UserID FriendID
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1 2
1 3
2 3
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Laravel migration: unique key is too long, even if specified
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How to initialize an array's length in JavaScript?
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edited Jul 7 '15 at 15:21
answered Jan 31 '11 at 14:32
F...
How to smooth a curve in the right way?
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275
I prefer a Savitzky-Golay filter. It uses least squares to regress a small window of your data...
MySQL ON vs USING?
...d to just say film_id since that would make for an ambiguity:
ERROR 1052 (23000): Column 'film_id' in field list is ambiguous
As for select *, the joining column appears in the result set twice with ON while it appears only once with USING:
mysql> create table t(i int);insert t select 1;c...
Ways to save enums in database
...ame Suit
================== ==========
Shelby Jackson 2
Ian Boyd 1
verses
Name Suit
================== ==========
Shelby Jackson Diamond
Ian Boyd Heart
the latter is much easier. The former required getting at the source code and f...
How to get the input from the Tkinter Text Widget?
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To get Tkinter input from the text box, you must add a few more attributes to the normal .get() ...
Is it correct to use JavaScript Array.sort() method for shuffling?
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12 Answers
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What is the difference between LL and LR parsing?
...→ T + E
E → T
T → int
Then given the string int + int + int, an LL(2) parser (which uses two tokens of lookahead) would parse the string as follows:
Production Input Action
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S int + int + int Predi...
Why would adding a method add an ambiguous call, if it wouldn't be involved in the ambiguity
...ms string[]) in its normal form
1: C(params string[]) in its expanded form
2: C<string>(string)
3: C(string, object)
Candidate zero is obviously inapplicable because string is not convertible to string[]. That leaves three.
Of the three, we must determine a unique best method. We do so b...