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Facebook database design?
...ures a composite primary key made up of the two foreign
keys, both pointing back to the user table. One ID will point to the
logged in user, the other ID will point to the individual friend
of that user)
Example Usage:
Table User
--------------
UserID EmailAddress Password Gender ...
Where IN clause in LINQ [duplicate]
...
@JitendraPancholi if you create a List<int> you can check for ids. It is supported in .Net 4. Not sure of the earlier versions.
– SO User
Jun 10 '14 at 5:16
...
android TextView: setting the background color dynamically doesn't work
...s definitely could have been done better with enums rather than ubiquitous ints. Thanks for the answer.
– Wojciech Górski
Sep 2 '12 at 15:21
2
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Any implementation of Ordered Set in Java?
...og(n).
If you want to access the content of the set as an Array, you can convert it doing:
YourType[] array = someSet.toArray(new YourType[yourSet.size()]);
This array will be sorted with the same criteria as the TreeSet (natural or by a comparator), and in many cases this will have a advantag...
Date query with ISODate in mongodb doesn't seem to work
...ructor and then supplied to the mongodb criteria object,I think the driver converts the date to ISO date and the query then works and gives desired output, however the same new Date() constructor does not work or show same output on robo mongo,for the same criteria,which is weird,since I used robomo...
How to set radio button checked as default in radiogroup?
...gs, finally i did a trick which is wrong actually, but works fine.
for ( int i = 0 ; i < myCount ; i++ )
{
if ( i != k )
{
System.out.println ( "i = " + i );
radio1[i].setChecked(false);
}
}
Here I set one for loop, which checks for the available radio buttons and ...
How do I compare two hashes?
...sh2.to_a # => true
hash1.to_a == hash3.to_a # => false
You can convert the hashes to arrays, then get their difference:
hash3.to_a - hash1.to_a # => [["c", 3]]
if (hash3.size > hash1.size)
difference = hash3.to_a - hash1.to_a
else
difference = hash1.to_a - hash3.to_a
end
Hash...
Changing specific text's color using NSMutableAttributedString in Swift
...ange = (main_string as NSString).rangeOfString(string_to_color)
Then you convert to attributed string and use 'add attribute' with NSForegroundColorAttributeName:
var attributedString = NSMutableAttributedString(string:main_string)
attributedString.addAttribute(NSForegroundColorAttributeName, val...
What's the best way to generate a UML diagram from Python source code? [closed]
...f such a UML diagrammer existed, then you could take an arbitrary program, convert "halt" statements into statements that would impact the UML diagram, and use the UML diagrammer to solve the halting problem, which as we know is impossible.
...
SQL : BETWEEN vs =
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Would there be a second compiler step as BETWEEN gets converted to conditionals? I understand this is a bit pedantic but would there be an additional overhead?
– James Scott
Aug 11 '16 at 14:48
...