Ruby If Then Else One Line

Here s the key difference between ruby and most other languages.

Ruby if then else one line. It s possible to write an if statement using just one line of code. X 10 if x 8 puts x is greater than 8 end. 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. 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.

Puts 123 end this is a shorthand version which can be useful if you have a simple condition. If a 10 here we used if. You can also add an else expression. This chapter will cover all the basic i o functions available in ruby.

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. The if then else statement in delphi code beginner delphi developers should watch out for if then else traps. If j 0 then if j 100 then. The values false and nil are false and everything else are true.

An if expression s conditional is separated from code by the reserved word then a newline or a semicolon. Executes code if the conditional is true. The ruby language has a very simple control structure that is easy to read and follow. In the first line we are taking input.

Notice ruby uses elsif not else if nor elif. 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.

Which is the same as. All the i o methods are derived from the class io. If construct in one line. The then is optional.

If else if syntax. 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 you have an if else expression there is also a shorthand for that.

If the test expression evaluates to a true then the then expression is evaluated. Ruby provides a whole set of i o related methods implemented in the kernel module. 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 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. I m getting into the habit of using these a lot more consistently so i wanted to share. Is there an alternative.