This document describes how to create a loop by block coding.
Index
For
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A repeat statement is a syntax that allows a specific part of the code to be repeated under certain conditions.
1) For Statement Blockset
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The repeat statement consists of initial values (init), condition, counter, and statements to be executed if true.
2) Condition Blockset
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Defines conditions to be applied to loop elements.
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Click the button to add or delete conditions in logical comparison form (&&, ||)
button to add or delete conditions in logical comparison form (&&, ||)
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Below is an example using the For Statement Blockset.
No. | Detail |
1 | Create Array Data by declaring the variables Array1 and Array2. |
2 | Declare a HashMap type variable result. |
3 | Set the initial value (i=0) of the For statement. |
4 | Set the condition of the For statement.
- Repeat the For statement when the value of variable i is less than the number of elements in array Array 1. |
5 | The For statement is an increment or decrement.
- When repeating For statements, increase the value of variable i by 1 each time. |
6 | Command statement for For statement.
- Add a HashMap element to the variable result, where the i-th element of array1 is key and the i-th element of array2 is the value. |
7 | Check the results on the Testbed. |
Foreach
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The Foreach statement is used to repeat the number of elements in an array or the number of properties of an object.
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The Foreach block set consists of an array object (element), an index (key) of the array, a value (value), and a statement (statement).
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Below is an example using the Foreach statement blockset.
No. | Detail |
1 | Declare HashMap type variable ResponseData. |
2 | Declare the variable HashMapData and create Array Data. |
3 | Specifies the array object (HashMapData) to apply the Foreach statement. |
4 | The Key(index) of the element obtained when traversing the element through the Foreach statement is stored in a variable called KeyName. |
5 | The Value of the element obtained when traversing the element through the Foreach statement is stored in a variable called ValueName. |
6 | A Command statement in the Foreach statement.
- Add a HashMap element with KeyName as key and ValueName as value to the variable ResponseData
- Clean up Key in the form of KeyName via the String Concat (text integration) block. |
7 | Check the results in Testbed. |
Control Block
1) Break
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If certain conditions are met, exit the repeat statement without further circulation.
2) Continue
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If certain conditions are met, skip the contents below Continue and start the next iteration.
