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Xcode 4 - “Archive” is greyed out?
I would like to archive my application, but the Archive option is greyed out. What could cause this?
4 Answers
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What does SQL clause “GROUP BY 1” mean?
Someone sent me a SQL query where the GROUP BY clause consisted of the statement: GROUP BY 1 .
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Persistent invalid graphics state error when using ggplot2
...frame and most of the graphing code to make things as basic as possible. But still, I get:
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How do I create a datetime in Python from milliseconds?
I can create a similar Date object in Java by java.util.Date(milliseconds) . How do I create the comparable in Python?
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Convert object to JSON in Android
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Most people are using gson : check this
Gson gson = new Gson();
String json = gson.toJson(myObj);
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How should I copy Strings in Java?
At this point, the backup variable still contains the original value "hello" (this is because of String's immutability right?).
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Suppress/ print without b' prefix for bytes in Python 3
Just posting this so I can search for it later, as it always seems to stump me:
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How to navigate through a vector using iterators? (C++)
...ctor of strings instead of the [] operator or the "at" method. From what I understand, iterators can be used to navigate through containers, but I've never used iterators before, and what I'm reading is confusing.
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Purpose of asterisk before a CSS property
...llowing is taken from the Yahoo CSS reset. Can someone please explain the purpose of the asterisks?
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Using Moq to mock an asynchronous method for a unit test
I am testing a method for a service that makes a Web API call. Using a normal HttpClient works fine for unit tests if I also run the web service (located in another project in the solution) locally.
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