Ruby If Then Else One Line

Ruby provides a whole set of i o related methods implemented in the kernel module.

Ruby if then else one line. You can also add an else expression. The ruby language has a very simple control structure that is easy to read and follow. An if expression s conditional is separated from code by the reserved word then a newline or a semicolon. If var 10 print variable is 10 else print variable is something else end.

One of the most powerful features present in most programming and scripting languages is the ability to change the flow of the program as certain conditions change. This chapter will cover all the basic i o functions available in ruby. In the first line we are taking input. If the test expression evaluates to a true then the then expression is evaluated.

Here s the key difference between ruby and most other languages. The values false and nil are false and everything else are true. Executes code if the conditional is true. If construct in one line.

Database applications advanced php programming perl python java programming javascript programming c c programming ruby programming visual basic view more. Which is the same as. If you have an if else expression there is also a shorthand for that. Notice ruby uses elsif not else if nor elif.

First see a 10 the condition a 10 is comparing a with 10 and if a is greater than 10 then it is true and if smaller then false. If else if syntax. The class io provides all the basic methods such as read write gets puts readline getc and printf. All the i o methods are derived from the class io.

Is there an alternative. The then is optional. X 10 if x 8 then puts x is greater than 8 end. All in one line.

If a 10 here we used if. I m getting into the habit of using these a lot more consistently so i wanted to share. The if then else statement in delphi code beginner delphi developers should watch out for if then else traps. It s possible to write an if statement using just one line of code.

The simplest form of flow control and logic in ruby is called an if statement or technically speaking in ruby since everything is an expression an if. If j 0 then if j 100 then. If var 10 print variable is 10 end. If the conditional is not true code specified in the else clause is executed.

Puts 123 if 2 even. H ruby abc rb x is greater than 8. So the whole story is that if a 10 if a is greater than 10 then it will execute puts your number is greater than 10 otherwise it will execute puts your number not greater than 10 end at. X 10 if x 8 puts x is greater than 8 end.