Tutorial 90 demonstrates how to create a vector, store data in it, and finally limit its size by deleting elements after the vector reaches a specific size.
Vectors can be useful, especially as they automatically ‘shuffle’ all the data down when a new element is added. You could do this with arrays, however it would require extra programming. In addition, it is normally more efficient to create an index variable that cycles around the array values such that the last entry added could be any of its entries (determined by the variable, that is incremented each time a new value is added, until it reaches the maximum size of the array, when it is reset to zero).
Unlike arrays, it is not possible to query what a vector element had been on a previous bar, like you can with arrays.
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Video explanation | Creating a vector and storing data in it
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