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Using Build Flavors - Structuring source folders and build.gradle correctly

...r code in src/main/java can do import com.foo.A depending on the flavor selected, the right version of com.foo.A is used. This also means both version of A must have the same API (at least when it comes to the API used by classes in src/main/java/... Edit to match revised question Additionally...
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How can I define a composite primary key in SQL?

...for the table and neither value can be NULL. If you do a query like this: SELECT * FROM voting WHERE QuestionID = 7 it will use the primary key's index. If however you do this: SELECT * FROM voting WHERE MemberID = 7 it won't because to use a composite index requires using all the keys from th...
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Hidden features of Perl?

... One of my favourite features in Perl is using the boolean || operator to select between a set of choices. $x = $a || $b; # $x = $a, if $a is true. # $x = $b, otherwise This means one can write: $x = $a || $b || $c || 0; to take the first true value from $a, $b, and $c, or a default of 0...
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How to set JVM parameters for Junit Unit Tests?

...agues to set the following: Windows Preferences / Java / Installed JREs: Select the proper JRE/JDK (or do it for all of them) Edit Default VM arguments: -Xmx1024m Finish, OK. After that all test will run with -Xmx1024m but unfortunately you have set it in every Eclipse installation. Maybe you co...
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How to print the current Stack Trace in .NET without any exception?

...oint where you want to see the stack trace. Right-click the breakpoint and select "Actions..." in VS2015. In VS2010, select "When Hit...", then enable "Print a message". Make sure "Continue execution" is selected. Type in some text you would like to print out. Add $CALLSTACK wherever you want to se...
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Apache Prefork vs Worker MPM

... See also "How do I select which Apache MPM to use?" serverfault.com/a/383634 – Nazariy Dec 18 '13 at 12:17 ...
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iOS 7 - How to display a date picker in place in a table view?

...hose values. As a delegate to this table, the sample uses the method "didSelectRowAtIndexPath" to open the UIDatePicker control. For iOS 6.x and earlier, UIViewAnimation is used for sliding the UIDatePicker up on-screen and down off-screen. For iOS 7.x, the UIDatePicker is added in-line to th...
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The breakpoint will not currently be hit. No symbols have been loaded for this document in a Silverl

...on --> Properties Look under Common Properties --> Startup Project Select multiple startup projects select Start action on the projects you need to debug. share | improve this answer ...
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Sublime Text 2 and 3: open the same file multiple times

... the file in. Type Ctrl-p (Mac: ⌘-p) to get the list of files available. Select the one you're after and it will be loaded into the current pane (Even if it's already open in another pane.) share | ...
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Create new user in MySQL and give it full access to one database

...'; Where ALL (priv_type) can be replaced with specific privilege such as SELECT, INSERT, UPDATE, ALTER, etc. Then to reload newly assigned permissions run: FLUSH PRIVILEGES; Executing To run above commands, you need to run mysql command and type them into prompt, then logout by quit command...