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How to model type-safe enum types?
Scala doesn't have type-safe enum s like Java has. Given a set of related constants, what would be the best way in Scala to represent those constants?
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How can I count all the lines of code in a directory recursively?
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JavaScript 1506 77848 212000 366495
CSS 56 9671 20147 87695
HTML 51 1409 151 ...
Android - Back button in the title bar
..."Method invocation 'actionBar.setDisplayHomeAsUpEnabled(true)' may produce java.lang.NullPointerException"
– statosdotcom
Jun 29 '16 at 15:26
1
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How to fix Hibernate LazyInitializationException: failed to lazily initialize a collection of roles,
...te from AuthenticationProvider like you suggest, I get an error Caused by: java.lang.IllegalArgumentException: Can not set com.horariolivre.security.CustomAuthenticationProvider field com.horariolivre.security.SecurityConfig.authenticationProvider to $Proxy36. I get the same error if I use the add f...
How can I convert immutable.Map to mutable.Map in Scala?
...p(1 -> "one", 2 -> "two")
//iMap: scala.collection.immutable.Map[Int,java.lang.String] = Map((1,one), (2,two))
scala> val mMap = new HashMap[Int,String] {
| override def default(key: Int): String = iMap(key)
| }
//mMap: scala.collection.mutable.HashMap[Int,String] = Map()
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Coding in Other (Spoken) Languages
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In the Java language some methods must be named (at least partially) using the English language because of the JavaBeans convention.
This convention requires that a property X be established via a pair of getX() and setX() methods....
Android: Share plain text using intent (to all messaging apps)
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If that article doesn't answer all of your questions, there is always the Javadoc itself for ShareCompat.IntentBuilder on the Android Developers website. I added more to this example of the API's usage on the basis of clemantiano's comment.
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How to extract the file name from URI returned from Intent.ACTION_GET_CONTENT?
... This will crash for videos when creating the cursor with a java.lang.IllegalArgumentException: Invalid column latitude unfortunately. Works perfectly for photos though!
– Lucas P.
Feb 28 at 12:47
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Appending an element to the end of a list in Scala
...he ListBuffer converted back (pretty much like String and StringBuilder in Java), but that's just a guess.
– Landei
Aug 9 '13 at 9:27
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How to implement the Android ActionBar back button?
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I got the error: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference
– Jones
Mar 15 at 21:12
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