Ruby If Then Else One Line

If the test expression evaluates to a true then the then expression is evaluated.

Ruby if then else one line.

H ruby abc rb x is greater than 8. If you have an if else expression there is also a shorthand for that. The values false and nil are false and everything else are true. The ruby language has a very simple control structure that is easy to read and follow.

All the i o methods are derived from the class io. 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 construct in one line. X 10 if x 8 then puts x is greater than 8 end.

An if expression s conditional is separated from code by the reserved word then a newline or a semicolon. 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. I m getting into the habit of using these a lot more consistently so i wanted to share. The class io provides all the basic methods such as read write gets puts readline getc and printf.

Here s the key difference between ruby and most other languages. All in one line. Notice ruby uses elsif not else if nor elif. H ruby abc rb x is greater than 8.

These shorthands beautifully consolidate three or more lines of code into one readable line of code. If var 10 print variable is 10 else print variable is something else end. Puts 123 if 2 even. Puts 123 end this is a shorthand version which can be useful if you have a simple condition.

X 10 if x 8 puts x is greater than 8 end. If j 0 then if j 100 then. If a 10 here we used if. It s possible to write an if statement using just one line of code.

Is there an alternative. You can also add an else expression. If the conditional is not true code specified in the else clause is executed. Executes code if the conditional is true.

This chapter will cover all the basic i o functions available in ruby. The if then else statement in delphi code beginner delphi developers should watch out for if then else traps. Ruby provides a whole set of i o related methods implemented in the kernel module. If var 10 print variable is 10 end.

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. In the first line we are taking input. If else if syntax. The then is optional.