Ruby If Then One Line

You could use the then keyword but its considered bad practice.

Ruby if then one line.

If foo then a elsif bar then b else c end you could use cases ruby s switch operator if find your control statements overly complex. These shorthands beautifully consolidate three or more lines of code into one readable line of code. A 7 end note that the syntax for if one line blocks do not work anymore in ruby 1 9. Notice ruby uses elsif not else if nor elif.

An if expression s conditional is separated from code by the reserved word then a newline or a semicolon. If item rigged then yes else no end if item rigged. With an if statement you can check if something is true. The unless expression is the opposite of the if expression the code.

In ruby the condition and the then part of an if expression must be separated by either an expression separator i e. Notice that we use two equal symbols to mean equality. But when you want to check for the opposite not true false. Or a newline or the then keyword.

I m getting into the habit of using these a lot more consistently so i wanted to share. One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same. Ternary statements still work this is equal to. Yes else no end if item rigged yes else no end.

A 5 a 7 if a 4 print a prints 5 since the if block isn t executed unless expression. Ruby has some amazing shorthands for if then else statements. If a 4 then a 7 end or if a 4. The github ruby styleguide recommends that one liners be reserved for trivial if else statements and that nested ternary operators be avoided.

If the conditional is not true code specified in the else clause is executed.