![]() In this example we are trying to concatenate two strings in scala using relp tool. In this example we are printing out the sum of variables using repl in scala. Examples of Scala REPLįirst try to type scala on the shell the press enter to check everything is working fine and you will see some lines would get printed there. Just freely open the command line type your code there. After these two lines of code, we will have the output as 2 here. Also, the dependent code will be automatically imported. These lines of code will be compiled separately as we typed them on the shell. ![]() But b has dependency on the variable a here. We are assigning two variable here a and b. Let’s see one simple example to for beginners to start with openyour command line and try to type the below line of code there The code that we type in the shell will be bind as an object or a class. Suppose we have some dependency of the previous lines on the command line then this dependency would be automatically be imported by the help of generated imports. When we type any line on the command line interpreter shell that is these lines would be compiled separately not all at once. -Yrepl-outdir: This command helps us in the inspection of our artifacts with this help of some external tool.paste: This command helps us to enter the object and class.javap: This command is used to for the inspection of the class artifacts.replay: This command is used to give replay to session with some modified settings.settings: With the use of this command we can modify the settings of our compiler.load: This command is used to load file and this fie will contain the REPL input.help: this command will display the list of all the commands that are present and we can use.paste -raw: This command is used to disable some code which is defined in a package.Also, this command is used to enter into the power mode. power: This commands will import all the compiler components.We have so many command to deal with repl in scala or these are the features provided by them to work with expression in scala. After this step it compiles the executable template and prints the result or we can say the output on the screen. When the repl evaluating an expression so at that time it bind those expression into the executable template. ![]() That means it is again ready to take the inputs and read them followed by evaluating the expression and print the output on the shell and this process goes on the loop. Loop: When all this process get performed successfully it again start performing the same steps.After reading and evaluating the expression from the command line interpreter it just print the output on the shell. Print: The third operation is to print the output.Immediately after reading the input, it perform its the next step that is to evaluate them correctly. Evaluate: The second operation that it performed Evaluate.So the first step it performs is reading the input from the command line shell. Read: When we type any input on the shell so it immediately start reading those inputs. ![]() Let’s have a look of its working in step see below: This is used to read the expression or we can say to evaluate the expression in scala. How does REPL Command Work in Scala?Īs we know that repl is an interactive interpreter shell. You will some lines of code automatically gets printed. Just open your command line interface and run this command there. This is the command that we have to run while working with repl in scala. Web development, programming languages, Software testing & others Start Your Free Software Development Course
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