Ruby If Then Else One Line

This chapter will cover all the basic i o functions available in ruby.

Ruby if then else one line.

Which is the same as. All the i o methods are derived from the class io. If you have an if else expression there is also a shorthand for that. 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.

You can also add an else expression. 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 the test expression evaluates to a true then the then expression is evaluated. X 10 if x 8 puts x is greater than 8 end.

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. Is there an alternative. Executes code if the conditional is true. All in one line.

H ruby abc rb x is greater than 8. Here s the key difference between ruby and most other languages. X 10 if x 8 then puts x is greater than 8 end. Database applications advanced php programming perl python java programming javascript programming c c programming ruby programming visual basic view more.

H ruby abc rb x is greater than 8. If var 10 print variable is 10 else print variable is something else end. These shorthands beautifully consolidate three or more lines of code into one readable line of code. If var 10 print variable is 10 end.

I m getting into the habit of using these a lot more consistently so i wanted to share. It s possible to write an if statement using just one line of code. The class io provides all the basic methods such as read write gets puts readline getc and printf. Ruby provides a whole set of i o related methods implemented in the kernel module.

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. If j 0 then if j 100 then. Puts 123 end this is a shorthand version which can be useful if you have a simple condition. The ruby language has a very simple control structure that is easy to read and follow.

In the first line we are taking input. The values false and nil are false and everything else are true. Notice ruby uses elsif not else if nor elif. The then is optional.

If else if syntax. If a 10 here we used if. If construct in one line. The if then else statement in delphi code beginner delphi developers should watch out for if then else traps.