iOS application development
Tutorials programming language Swift
helpful hints for application developers
programming language Swift
Run the needs of code after some time (on a timer) to help build DispatchQueue place in the code. With the help of these queues you can perform tasks asynchronously or concurrently. For example, you could define a task to perform some calculations, create or modify a data structure, process some data read from a file, or any number of things. You define tasks by placing the corresponding code inside either a function or a block object and adding it to a dispatch queue.
A dispatch queue is an object-like structure that manages the tasks you submit to it. All dispatch queues are first-in, first-out data structures. Thus, the tasks you add to a queue are always started in the same order that they were added.
DispatchQueue manages the execution of work items. Each work item submitted to a queue is processed on a pool of threads managed by the system.