![]() ![]() At this point, option_index_element = Some(1) Hence, to extract the value of the type Option, use the unwrap() function. This type contains the value of the index of the element in the array, but is not necessarily a numeric type. The position() function returns a value of type Option. The closure passed in the position() doesn’t necessarily get executed on each element of the array as it will stop processing other elements as soon as it finds one element that meets the condition defined in the closure returning as a result true. if ("c" = "b") return true This won't reach to element "c" as it has previously found an element that meets the condition defined in the closure if ("b" = "b") return true This will return true, stop processing other elements if ("a" = "b") return true This will return false, get the next element in other words, it will run the closure for each ![]() This function uses a closure that executes against the elements in the iterator until it finds one element that meets the condition and returns true. The position() function searches for an element in an iterator, returning its index. Iterators have a wide range of functions available, among them is the position() function. In the previous example, the referemce types of the elements of the array my_array is &str. Therefore, the result from using iter() is an iterator of the type T, where T is the reference type of the elements of the array. The iter() is a function that generates an Iterator trait which helps to iterate a collection of values by reference such as arrays, slices, vectors, etc. Other solution to find index of an element of an array: Using a for loopĪs previously stated, there are three functions used to find the index of an array element:.Using into_iter() instead of iter() function.Solution that works when finding the index of an element in slices and vectors. ![]()
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