Ruby If Then

If else if syntax.

Ruby if then.

The stock 1 part is what we call a condition. Here we will explain all the conditional statements and modifiers available in ruby. If something is true the condition then you can do something. In ruby you do this using if statements.

H ruby abc rb x is greater than 8. So val is even will be the return value of even or odd without an explicit return statement in the method s final line. X 10 if x 8 puts x is greater than 8 end. These shorthands beautifully consolidate three or more lines of code into one readable line of code.

For each operator plus. It s important to get it right. B is interpreted as a plus b where the plus. For an if else end spanning multiple lines the newline acts as a delimiter to split the conditional from the true part.

Then is optional unless you want to write an if expression in one line. The ruby s passengers were all over australia and beyond having in some cases caught the final flights before international borders closed. If var 10 print variable is 10 end. Stock 10 if stock 1 puts sorry we are out of stock end notice the syntax.

For example a plus. Ruby supports a rich set of operators as you d expect from a modern language. If condition then true part else false part end. H ruby abc rb x is greater than 8.

Then is a delimiter to help ruby identify the condition and the true part of the expression. There is a corresponding form of abbreviated assignment operator. The ruby language has a very simple control structure that is easy to read and follow. Remember that a ruby method by default will return the value in its final line.

Ruby has some amazing shorthands for if then else statements. Most operators are actually method calls. In ruby they are created by writing the if keyword followed by a condition optionally followed by the then keyword then the code you want to execute if the condition is true and then finally the end keyword to end the structure. Carnival had provided officials with a list of emails.

The then is optional. If var 10 print variable is 10 else print variable is something else end. Here s the key difference between ruby and most other languages. If the test expression evaluates to a true then the then expression is evaluated.

When the argument val is even the code including and following the else statement doesn t exist as far as ruby is concerned. So they should look something like the following.