1 The function in map is executed on each value emission while mapTo argument is calculated once when the operator is created. The s?k?nt? I was running into with this method, is that it would return the latest row that had hami? been soft-deleted in the database. However, it would return that same row a number of times equal to the amount of non-… Read More

To do this we could apply the map operator, providing a function that returns an object with just these properties: The mapTo() operator's return value is Observable that emits the given value every time the source Observable emits something. There may also be times we want to grab a single property from an object using map. For example, we may h… Read More