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How do I break out of a loop in Scala?
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This is using Scala as a procedural language ignoring the functional programming advantages (i.e. tail recursion). Not pretty.
– Galder Zamarreño
Aug 3 '11 at 17:13
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.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
...is right, if you use a zero-length array there is no way around: (T[])java.lang.reflect.Array.newInstance(a.getClass().getComponentType(), size); which would be superfluous in if the size would be >= actualSize (JDK7)
– Alex
May 31 '13 at 14:52
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Difference between return and exit in Bash functions
...unction. 0 is true but false is 1 in the shell, different from other prog langs.
For more info on functions:
http://www.linuxjournal.com/content/return-values-bash-functions
NOTE: The isdirectory function is for instructional purposes only. This should not be how you perform such an option in a r...
Lambda Expression and generic method
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incompatible types: java.util.Comparator<java.lang.String> cannot be converted to MyComparable and MyComparable is not generic (no type) so (MyComparable<String>) would not work either
– user85421
Sep 20 '18 at 13:00
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How to create ENUM type in SQLite?
...LUES" keyword) creates a single new row in an existing table.": sqlite.org/lang_insert.html. Break it up avoid that: INSERT INTO PriceType(Type, Seq) VALUES ('M',1); INSERT INTO PriceType(Type, Seq) VALUES ('R',2); INSERT INTO PriceType(Type, Seq) VALUES ('H',3);
– ahcox
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jQuery UI accordion that keeps multiple sections open?
...orner-bottom")
.hide();
HTML code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Toggle Panels (not accordion) using ui-accordion styles</title>
<!-- jQuery UI | http://jquery.com/ http://jqueryui.com/ http://jqueryui.co...
How to set up Spark on Windows?
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I get "java.lang.IllegalArgumentException: Error while instantiating 'org.apache.spark.sql.hive.HiveSessionState'". Do I need an extra step for installing hive?
– Stefan
Mar 31 '17 at 19:52
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How do I use a custom Serializer with Jackson?
... With this I get the same error: Exception in thread "main" java.lang.IllegalArgumentException: JsonSerializer of type com.example.JsonTest$UserSerilizer does not define valid handledType() (use alternative registration method?) at org.codehaus.jackson.map.module.SimpleSerializers.addSeri...
Who is calling the Java Thread interrupt() method if I'm not?
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You could learn this by creating your own thread class (extending java.lang.Thread) and overriding interrupt() method, in which you record the stacktrace into, say, a String field, and then transfer to super.interrupt().
public class MyThread extends Thread {
public volatile String interru...
Wrapping null-returning method in Java with Option in Scala?
... with Java objects it won't work as expected:
val nullValueInteger : java.lang.Integer = null
val option: Option[Int] = Option(nullValueInteger)
println(option) // Doesn't work - zero value on conversion
val nullStringValue : String = null
val optionString: Option[String] = Option(nullStringValue...