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Adding a library/JAR to an Eclipse Android project

...w application project. When you are creating the library project, you can select any application name, package, and set other fields as needed, as shown in figure 1. Next, set the project's properties to indicate that it is a library project: In the Package Explorer, right-click the library proje...
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Is it possible to change a UIButtons background color?

...IControlStateDisabled]; [myButton setBackgroundImage:[UIImage imageNamed:@"selected.png"] forState:UIControlStateSelected]; [myButton setBackgroundImage:[UIImage imageNamed:@"higligted.png"] forState:UIControlStateHighlighted]; [myButton setBackgroundImage:[UIImage imageNamed:@"highlighted+selected....
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Restful way for deleting a bunch of items

...away with the javascript confirm on the same page, and instead, create the selection and redirect to it, showing a confirm message on that page. In other words: From: http://example.com/resources/ do a POST with a selection of the ID's to: http://example.com/resources/selections which, if succes...
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iPhone app signing: A valid signing identity matching this profile could not be found in your keycha

... Open Xcode. Click WINDOW > ORGANIZER. Then click the Devices tab and select "Provisioning Profiles" on the left. That should bring up your provisioning profiles. Highlight one by one (if more than 1), right click and delete profile. Yes, just do it! Delete them all! (I kept making a new one a...
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SQL Server: Is it possible to insert into two tables at the same time?

...LARE @DataID int; INSERT INTO DataTable (Column1 ...) VALUES (....); SELECT @DataID = scope_identity(); INSERT INTO LinkTable VALUES (@ObjectID, @DataID); COMMIT The good news is that the above code is also guaranteed to be atomic, and can be sent to the server from a client application w...
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What is the difference between '>' and a space in CSS selectors?

... A > B will only select B that are direct children to A (that is, there are no other elements inbetween). A B will select any B that are inside A, even if there are other elements between them. ...
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Adding 'serial' to existing column in Postgres

...int, b text); CREATE TABLE bar (a serial, b text); INSERT INTO foo (a, b) SELECT i, 'foo ' || i::text FROM generate_series(1, 5) i; INSERT INTO bar (b) SELECT 'bar ' || i::text FROM generate_series(1, 5) i; -- blocks of commands to turn foo into bar CREATE SEQUENCE foo_a_seq; ALTER TABLE foo ALTER...
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Pad a string with leading zeros so it's 3 characters long in SQL Server 2008

... If the field is already a string, this will work SELECT RIGHT('000'+ISNULL(field,''),3) If you want nulls to show as '000' It might be an integer -- then you would want SELECT RIGHT('000'+CAST(field AS VARCHAR(3)),3) As required by the question this answer only w...
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Warning: Null value is eliminated by an aggregate or other SET operation in Aqua Data Studio

...t the solution specifically for the "opencases" column be simpler as just "select count(1)..." (or "count" of any other literal)? The Where clause already specifies "and closed is NULL" so no need for summing a case statement in this instance. Also, I've heard (aeons ago) that "count(*)" is not as e...
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NULL values inside NOT IN clause

... Query A is the same as: select 'true' where 3 = 1 or 3 = 2 or 3 = 3 or 3 = null Since 3 = 3 is true, you get a result. Query B is the same as: select 'true' where 3 <> 1 and 3 <> 2 and 3 <> null When ansi_nulls is on, 3 <&...