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lesson_13 [2019/10/07 13:09]
britaldo
lesson_13 [2020/02/13 20:06] (current)
danilo
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-=====LESSON 13: Loop structures ​on Dinamica EGO=====  ​+=====LESSON 13: Loop structures ​introduction=====  ​
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-Dinamica EGO has several looping structures that can be used for various applications. Loops come in handy when you want to run the same code over and over again, each time with a different value. Loops can execute a block of code a number of times. In this lesson we will talk about different kinds of loops on Dinamica EGO and how to work with repetition structures.+==== What will you learn? ====
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 +  * The main iteration algorithms (containers) ​
 +  * Their main auxiliary operators ​
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-===Container operators that repeat the functions within them:===+Dinamica EGO has several iteration control functors. These functors in the form of container allow to developing iteration including closed loops. For example, run model steps, each time with different values or using a dynamic data, such as a map that is updated during the iteration execution. Iteration algorithm can execute a block of code a number of times. In this lesson we show types of iteration algorithms and how to work with them. 
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 +===Container operators that repeat the functions within them===
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-**Repeat:** This container makes a set of functorslinked in a dataflow chainiterate a predetermined number of times.+**Repeat:** This container makes a set of functors linked in a dataflow chain iterate a predetermined number of times.
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-**For:** This container makes a set of functorslinked in a dataflow chainiterate while a given condition is not met.+**For:** This container makes a set of functors linked in a dataflow chain iterate while a given condition is met.
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-**For each region:** This container creates and manages regions identified ​by a categorical map, whose classes represent regions. It manages both the processes of splitting a map into several maps, each one comprising a region, and the subsequent merging of all regional maps in a mosaic, that is a new map. The container also calls the functors inside it to each region.+**For each region:** This container creates and manages regions identified ​in a categorical map, whose classes represent regions ​(for example, a country, state, etc). It manages both processes of splitting a map into several maps, each one comprising a region, and the subsequent merging of all regional maps in a mosaic, that is a new map, after a sequence of processing of the regional maps. The container also iterates ​the functors inside it for each region.
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-**While:​** ​Checks ​the condition at the starting ​of the loop and if the condition is satisfied the statement inside the loop is executed+**While:** the condition ​is checked ​at the beginning ​of the iteration ​and if the condition is true, he container iterates
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-**Do while:** The condition is checked after the execution of all statements in the body of the loop.+**Do while:** The condition is checked after the execution of all functors within ​the container and the container iterates until the condition remains true.
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-**Step:** This functor receives and passes on to the current ​model the step or iteration.+**Step:** This functor receives and passes on the current step or iteration. 
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 +**Mux Map:** This functor enables a map to become dynamic, feeding back a new map output from the model iteration. In the beginning of the first iteration, it reads the map input to the initial port. 
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 +**Mux Table:** This functor enables a table to become dynamic, feeding back a new table output from the model iteration. In the beginning of the first iteration, it reads the table input to the initial port. 
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 +**Mux Value:** This functor enables a value to become dynamic, feeding back a new value output from the model iteration. In the beginning of the first iteration, it reads the input value to the initial port.
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-**Mux Map:** This functor makes a map dynamic, feeding it back with a map output from a model step. In the beginning of the first iteration, it reads a map input from the initial port. **(?)** 
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-**Mux Table:** This functor makes a table dynamic, feeding it back with a table output from a model step. In the beginning of the first iteration, it reads the table input from the initial port. **(?)** 
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 +===Congratulations,​ you have successfully completed this lesson!===
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-**Mux Value:** This functor initiates and feeds back a loop variable containing a value. In the beginning of the first iteration, it reads the input value from the initial port. **(?)** 
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 +☞[[:​lesson_14 | Next Lesson]]
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-Congratulations,​ you have successfully completed this lesson! Now let’s move to the **next lesson:​** ​[[lesson_14|LESSON 14: Using "​For" ​to make successive calculations]]+[[:​guidebook_startBack to Guidebook Start]]