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How to return a value from __init__ in Python?
...is new here? Is new implicit in Python? I assumed Python's semantics were different from Java and the other languages that do use this word.
– cs95
Jul 20 '16 at 6:06
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What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
...andles Qt's C++
extensions.
The moc tool reads a C++ header file.
If it finds one or more class
declarations that contain the Q_OBJECT
macro, it produces a C++ source file
containing the meta-object code for
those classes. Among other things,
meta-object code is required for the
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What's the difference between “ ” and “ ”?
Both of them mean space, but is there any difference?
13 Answers
13
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onCreateOptionsMenu inside Fragments
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it won't be called if you don't add this line: setHasOptionsMenu(true);
– Yoann Hercouet
Sep 21 '13 at 10:01
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What is the difference between ~> and >= when specifying rubygem in Gemfile?
... to 5, but the leading 0.8 must be "0.8".
You might do this, for example, if you think that the 0.9 version is going to implement some breaking changes, but you know the entire 0.8.x release series is just bugfixes.
However, simply using ">=0.8.5" would indicate that any version later than (or ...
C# declare empty string array
...ed visual studio's complain about using a variable that is not initialized if I assign it in an if statement
– Joe
Aug 30 '16 at 18:12
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Is MVC a Design Pattern or Architectural pattern
...ness logic layer, maybe some service layer and data access layer. That is, if you're into n-tier approach.
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How to cast an object in Objective-C
...o the compiler knows what method invocation to actually generate. (It can differ for properties with the same name.)
– Chris Hanson
Mar 29 '09 at 4:27
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How to convert a java.util.List to a Scala list
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@mauhiz If a Scala Buffer is a Java List, then nothing is fine! The OP wanted a conversion from Java List to an immutable Scala List. Expressions that expect a Scala List won't typecheck with a Buffer.
– Andres ...
In MySQL queries, why use join instead of where?
...s joins because the join conditions are not right next to the table names. If you have 6 tables being joined together, it is easy to miss one in the where clause. You will see this fixed all too often by using the distinct keyword. This is ahuge performance hit for the database. You can't get an acc...