The following script prints the numbers 1 through 10.
Ruby until loop.
Ruby until loop will executes the statements or code till the given condition evaluates to true.
End in the above outline expression is a ruby expression which must evaluate to true or false the ruby code here marker is where the code to executed is placed.
The until loop executes while a condition is false.
Inside the loop i 0 inside the loop i 1 inside the loop i 2 inside the loop i 3 inside the loop i 4 ruby until statement until conditional do code end executes code while conditional is false.
The ruby while loop is designed to repeat a task until a particular expression is evaluated to be false the syntax of a while loop is as follows.
The variable is incremented by one until its value equals ten.
Until conditional do code end example.
An until statement s conditional is separated from code by the reserved word do a newline or a semicolon.
An until loop s conditional is separated from code by the reserved word do a newline backslash or a semicolon.
This example is the functional equivalent of the while loop example except using an until loop until i 10.
The until loop allows you to write code which is more readable and logical.
The ruby until loop runs until the given condition evaluates to true.
Usr bin env ruby i 0 until i 10 i 1 end puts i loops the ruby way though the more traditional while and until loops are used in ruby programs closure based.
Basically it s just opposite to the while loop which executes until the given condition evaluates to false.
Like a while loop the do is optional.
While expression do.
An until statement s conditional is separated from code by the reserved word do a newline or a semicolon.