Ruby provides a keyword that allows the developer to explicitly stop the execution flow of a method and return a specific value. … So, the puts ‘after return call’ is never executed. Let’s see what happens if we call return without value. The return keyword returns nil if no value is passed as argument.
Is return necessary in Ruby?
No. Good Ruby style would generally only use an explicit returns for an early return. Ruby is big on code minimalism/implicit magic. That said, if an explicit return would make things clearer, or easier to read, it won’t harm anything.
Which keyword is used to not return anything in method?
The void keyword is used to declare that a method does not return any value.
What is the return type when there is no return statement in the method?
If no return statement appears in a function definition, control automatically returns to the calling function after the last statement of the called function is executed. In this case, the return value of the called function is undefined. … If a return value isn’t required, declare the function to have void return type.
Does Ruby automatically return?
Using “return” is unnecessary if it is the last line to be executed in the method, since Ruby automatically returns the last evaluated expression.
What is return in Ruby?
Ruby methods ALWAYS return the evaluated result of the last line of the expression unless an explicit return comes before it. If you wanted to explicitly return a value you can use the return keyword.
What does each return Ruby?
4 Answers. Array#each returns the [array] object it was invoked upon: the result of the block is discarded. Thus if there are no icky side-effects to the original array then nothing will have changed.
What does float a 35 0 return mean?
10) What does the expression float a = 35 / 0 return? Explanation: In Java, whenever we divide any number (double, float, and long except integer) by zero, it results in infinity.
What is the difference between return 0 and return 1?
return 0 in the main function means that the program executed successfully. return 1 in the main function means that the program does not execute successfully and there is some error. return 0 means that the user-defined function is returning false. return 1 means that the user-defined function is returning true.
What is Java void?
void is a Java keyword. Used at method declaration and definition to specify that the method does not return any type, the method returns void .
Is void a return type?
In lieu of a data type, void functions use the keyword “void.” A void function performs a task, and then control returns back to the caller–but, it does not return a value. You may or may not use the return statement, as there is no return value.
What is the difference between a void method and a value returning method?
A void method is one that simply performs a task and then terminates. A value – returning method not only performs a task but also sends a value back to the code that called it.
What is the return type of main ()?
main function return type is integer by default. But it cam be void also . When return type is integer ,you have to include “return 0” statement at the end . This line returns zero to the operating system at the end of the program.
What does next do in Ruby?
The Ruby next statement is used to skip loop’s next iteration. Once the next statement is executed, no further iteration will be performed. The next statement in Ruby is equivalent to continue statement in other languages.
What does << mean in Ruby?
In ruby ‘<<‘ operator is basically used for: Appending a value in the array (at last position)
What does || mean in Ruby?
It is a near-shorthand for a || a = b . The difference is that, when a is undefined, a || a = b would raise NameError , whereas a ||= b sets a to b . This distinction is unimportant if a and b are both local variables, but is significant if either is a getter/setter method of a class.