Ad
related to: understanding javascript promises pdf
Search results
Results From The WOW.Com Content Network
The terms future, promise, delay, and deferred are often used interchangeably, although some differences in usage between future and promise are treated below. Specifically, when usage is distinguished, a future is a read-only placeholder view of a variable, while a promise is a writable, single assignment container which sets the value of the ...
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
In programming language theory, lazy evaluation, or call-by-need, [1] is an evaluation strategy which delays the evaluation of an expression until its value is needed (non-strict evaluation) and which avoids repeated evaluations (by the use of sharing).
JavaScript (/ ˈ dʒ ɑː v ə s k r ɪ p t / ⓘ), often abbreviated as JS, is a programming language and core technology of the World Wide Web, alongside HTML and CSS. Ninety-nine percent of websites use JavaScript on the client side for webpage behavior. [10] Web browsers have a dedicated JavaScript engine that executes the client code.
JavaScript—via web workers, in a browser environment, promises, and callbacks. JoCaml—concurrent and distributed channel based, extension of OCaml, implements the join-calculus of processes; Join Java—concurrent, based on Java language; Joule—dataflow-based, communicates by message passing
To aid understanding the concept, the following is an analogy from real life. A customer visits a store to place an order. This is like the first call. The customer gives to a clerk a list of items, a check to cover their cost and delivery instructions.
The promise is the set of directed acyclic graphs. In this example, the promise is easy to check. In particular, it is very easy to check if a given graph is cyclic. However, the promised property could be difficult to evaluate. For instance, consider the problem "Given a Hamiltonian graph, determine if the graph has a cycle of size 4."
If n is higher than every previous proposal number received by the Acceptor (from any Proposer), then the Acceptor must return a message (called a Promise) to the Proposer, indicating that the Acceptor will ignore all future proposals numbered less than or equal to n. The Promise must include the highest number among the Proposals that the ...