The if else statement.
Ruby if then else.
You can also add an else expression.
Ruby has some amazing shorthands for if then else statements.
After an if.
In other programming languages this is known as a switch statement.
X 10 if x 8 puts x is greater than 8 end.
X 10 if x 8 then puts x is greater than 8 end.
If the test expression evaluates to a true then the then expression is evaluated.
Ruby exceptions the execution and the exception always go together.
H ruby abc rb x is greater than 8.
Ruby case statement last updated.
An if expression s conditional is separated from code by the reserved word then a newline or a semicolon.
In this post you will learn a few different use cases and how it all really works under the hood.
If the conditional is not true code specified in the else clause is executed.
The case statement is a multiway branch statement just like a switch statement in other languages.
The values false and nil are false and everything else are true.
It provides an easy way to forward execution to different parts of code based on the value of the expression.
Remember using unless in ruby is just the reverse of using if.
Whenever you need to use some if elsif statements you could consider using a ruby case statement instead.
The components of a case statement in ruby.
If you are opening a file which does not exist then if you did not handle this situation properly then yo.
The then is optional.
Note that else if is actually spelled elsif without the e.
It is similar to the default keyword in another programming languages.
You re saying if this is not true then do this.
Notice ruby uses elsif not else if nor elif.
This is where else statements come in.
If stock 1 puts sorry we are out of stock else puts thanks for your order end.
You can also say if this is not true then do this other thing.
Executes code if the conditional is true.
So they should look something like the following.
Ternary shortened if statement syntax.
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.
If var 10 print variable is 10 elsif var 20 print variable is 20 else print variable is something else end.
