30秒学会 Dart 片段 – some
Returns true if the provided predicate function returns true for at least one element in a collectio...
Returns true if the provided predicate function returns true for at least one element in a collectio...
Returns the tail of a collection. Use IEnumerable.Count() to check if the enumerable is non-empty. U...
Initializes a list containing the numbers in the specified range where start and end are inclusive w...
Chunks a list into smaller lists of a specified size. Use list() and range() to create a list of the...
Returns the average of a collection, after mapping each element to a value using the provided functi...
Chunks a list into smaller lists of the specified size. Use List.generate() to generate a list that ...
Groups the elements of a list based on the given function and returns the count of elements in each ...
Deep flattens a list. Use recursion. Use isinstance() with collections.abc.Iterable to check if an e...
Returns the nth element of a list. Check if lst has a length greater than n, use lst[n] if possible ...
Returns the first element in a collection that matches the given predicate function, match. Use IEnu...