Ruby Return Value

New 3 index index 2 0 1 4 common gotchas when sending the second parameter the same object will be used as the value for all the array.

Ruby return value.

The object returned could be the object nil meaning nothing but it still is an object. 2 56 let s take a look at return values in another context though. The return statement in ruby is used to return one or more values. Employee salary.

The returned object can be anything but a method can only return one thing and it also always returns something. 1 2 1 2 2 0 2 1 1 ruby s sort method accepts a block that must return 1 0 or 1 which it then uses to sort the values in the array. In ruby a method always return exactly one single thing an object. 2 53 here the return value from gets is getting assigned to the variable answer.

Each element in this array is created by passing the element s index to the given block and storing the return value. Here we can see that a call to explicit return call executes all. 2 49 well ruby methods have a return value 2 51 a value that they send back to the code that called them. For example def test i 100 j 10 k 0 end this method when called will return the last declared variable k.

Anyway just a personal taste thing. It is similar to an array except that indexing is done via arbitrary keys of any. 3 02 here are our add and subtract methods from before. When you access any key in a hash that has a default value if the key or value doesn t exist accessing the hash will return the default value.

Also called associative arrays they are similar to arrays but where an array uses integers as its index a hash allows you to use any object type. This returned value will be the value of the last statement. Every method always returns exactly one object. In the last form an array of the given size is created.

Every method in ruby returns a value by default. Ruby provides a keyword that allows the developer to explicitly stop the execution flow of a method and return a specific value. Hashes enumerate their values in the order that the corresponding keys were inserted. This operator compares two ruby objects and returns 1 if the object on the left is smaller 0 if the objects are the same and 1 if the object on the left is bigger.

It may feel less ruby but it has the advantage of being clear about what the return value really is an array. Return values from methods.