How to access Scala var and val fields from Java
I just ran into one thing I wish I had included in the Scala Cookbook that I didn’t include: How to access a val or var field in a Scala object from your Java code.In short, if you have a field named...
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Android field/variable naming conventions
This image, copied from this android.com page, shows the suggested Android field naming conventions.
View ArticleHow to override Scala's default numeric type when defining a field
Scala FAQ: How do I override the default numeric type that Scala assigns when I declare an Int, Long, Short, Float, or Double val or var field?SolutionIf you assign 1 to a variable, Scala assigns it...
View ArticleHow to assign a Scala class field to a (lazy) block or function
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 4.8, “How to assign a Scala class field to a block or function.”ProblemYou want to initialize a field in...
View ArticleHow to set uninitialized var fields (field types) in Scala
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is a short recipe, Recipe 4.9, “How to set uninitialize var field types in Scala.”ProblemYou want to set the type...
View ArticleScala: How to define properties in an abstract base class or trait
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 4.13, “How to define properties in an abstract base class or trait.”ProblemYou want to define abstract...
View ArticleHow to set default values for Scala method parameters
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 5.3, “How to set default values for Scala method parameters.”ProblemYou want to set default values for...
View ArticleHow to use parameter names when calling a Scala method
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 5.4, “How to use parameter names when calling a Scala method.”ProblemYou prefer a coding style where you...
View ArticleScala: How to create methods that take variable-arguments (varargs) fields
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 5.7, “How to create methods that take variable-arguments (varargs) fields.”ProblemTo make a method more...
View ArticleHow to create static members with Scala companion objects
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 6.6, “How to create static members with Scala companion objects.”ProblemYou want to create a class that...
View ArticleHow to use abstract and concrete fields in Scala traits
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is a very short recipe, Recipe 8.2, “How to use abstract and concrete fields in Scala traits.”ProblemYou want to...
View ArticleHow to create a JSON string from a Scala object
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 15.1, “How to create a JSON string from a Scala object.”ProblemYou’re working outside of a specific...
View ArticleHow to create JSON strings from Scala classes that have collections fields
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is Recipe 15.2, “How to create a JSON String from Scala classes that have collections.”ProblemYou want to generate...
View ArticleHow to create a simple Scala object from a JSON String
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is a short recipe, Recipe 15.3, “How to create a simple Scala object from a JSON String.”ProblemYou need to...
View ArticleScala: How to access the MongoDB document '_id' field with Casbah
This is an excerpt from the Scala Cookbook (partially modified for the internet). This is a very short recipe, Recipe 16.7, “How to access the MongoDB document 'ID' field (_id) with Casbah.”ProblemYou...
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