v2.0.0
Important: Version 2 introduces break changes. If you're already using TPromise v1, you should do some changes to your code. If you do not want to use v2, keep using v1 by setting the head to tag 1.1.0. See Break changes introduced by V2 to see what needs to change from v1 to v2.
All units are inside src/ folder.
uPromiseInterface defines IPromise interface and anonymous functions. You're supposed to use it more than the another unit.
The another unit is uPromise, that defines de TPromise class that implements IPromise interface.
The golden usage rule is:
Example:
unit uBrowserFetch;
// This units creates and returns a IPromise. So, it uses uPromiseInterface and uPromise units.
interface
uses uPromiseInterface;
// Implements a browser fetch() like function
function fetch(const url: string): IPromise<String, String>;
implementation
uses uPromise;
function fetch(const url: string): IPromise<String, String>;
begin
result := TPromise.New(
procedure (resolve: TOnResolveCallback<String>; reject: TOnRejectCallback<String>; const utils: TPromiseUtils)
begin
// Do some network stuff
resolve(fetchResultStr);
end
);
end;unit uMainForm;
// This unit just need a reference to IPromise<T, E>, and in implementation. So it just use uPromiseInterface
interface
...
implementation
uses uPromiseInterface, uBrowserFetch;
...
procedure TMainForm.SomeButtonClick(Sender: TObject);
begin
fetch('https://my.login.page.com/?user=foo&pwd=bar')
.&then(
procedure (const result: string)
begin
// Do something with fetch result
end
);
end;
...See the samples/ folder. There's a network fetch sample using TPromise.