This tutorial demonstrates the use of ArrayList, Iterator and a List. The code will be stored in Directories in the format of Flask. Loop filtering. I'm actually using a .foreach function but for ease of use, a regular for loop would suffice for now. The for loop executes the code block for a specified number of times. The following while loop iterates as long as n is less than 3:. Lets rename this “Check if each item needs an email sent”. So I would get five buttons displayed on an html page. As soon as you do this, the “Check if Active Tasks and HTML Created is equal” action will be placed inside of a loop so that the action applies to each item in the Email Source list. Again, the computer "knows" how many grades there are, so a for loop is appropriate. The loop keyword will not accept a string as input, see Ensuring list input for loop: using query rather than lookup.. Generally speaking, any use of with_* covered in Migrating from with_X to loop … Loop filtering does exactly what its name implies. Using jQuery, when the addItemButton is clicked this whole foreach loop is hidden and an item create form is shown in the same space. Preprocessor loops are most useful when you have a collection (list or array) of items to loop over — like an array of social media icons and colors, or a list of state-modifiers (success, warning, error, etc). {{ my_list is sequence and my list is not string }} {{ my_list is sequence and my list is not mapping }} For the full list of available tests follow the link in References. I’m trying to add