Scala Classic-----002-scala function definition, Process Control, exception handling getting started combat

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002-scala function definition, Process Control, exception handling getting started combat

Scalafunction Definitionstatement end no semicolondefining an parameterless functionDefFunction Name(Parameter name:parameter Type) [: unit=]{function Body}The teacher's code My actual code The reason is that the integrated development environment comes with a version of 2.11.0variablesConstants(not variable)StatementValVariable DeclarationVarno reference function calls without parentheses()defines a function with the return value of a parameterDefFunction Name(Parameter name:parameter Type...):return value type={function Body}Teacher Code Note that the last one is b . is the return value of this function default last behavior return valueProcess ControlIfStatementif (!args.isempty) file=arg (0)streamlined syntax structureprintln (if (!args.isempty) args (0) Else "Spark.txt") Do{}while ()Looping StatementsaboveForStatementfor (I <-1 to ten) {}for (i <-1.to (10)) {}+-*/%Print all file statements for the current directoryException HandlingOpenFile (file)may produce an exceptionwith theJavasamesame Usetry{}catch{}finally{}Way to handlewith theJavadifferentthroughCasematch a different exceptionNote The order of exceptions

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Scala Classic-----002-scala function definition, Process Control, exception handling getting started combat