![]() Site from smaller pieces (in ASP.NET this is done using controls) and by defining the interactionīetween these pieces, however they allow defining the interaction only for the server-side, which is Is one more step that has to be done - most of the web frameworks have some way for composing web The third key problem appears once we tightly integrate client and server side code, because there Components in web frameworks are only server-side Style (calling a function, setting a callback and writing the rest of the code in the callback).ģ. These calls are done without blocking the browser, but without the usual cumbersome programming ![]() Sides and you can send them as an arguments from one side to the other. You can also call server-sideįunctions from the client-side code and you can use certain data-types (including your own) in both ![]() In F# Web Tools we wanted to make this discontinuity as small as possible - You can writeīoth server and client-side code in a same file (as a code-behind code). Written using the same technology - the client-side part is usually even a separate project. In Silverlight (or in GWT ), the gap is still there, even though both parts are The second major problem with "Ajax" applications is that the web application has to be writtenĪs two separate parts - client-side part (when written in JavaScript) consists of several JS filesĪnd the server-side part (for example in ASP.NET) is written as a set of ASPX and C# or VB files.Īlso when using JavaScript, both sides use different formats to store the data, so bridging this Discontinuity between server and client side Runs in any browser that supports JavaScript - the current implementation is tested with IE andįirefox, but it could be easily tested with other browsers. The code you write in F# is of course executed in JavaScript, so it NET and F# classes and functions (so you can use some of the. (so if you don't know JavaScript, you don't have to learn it!) and also use your existing knowledge JavaScript to execute code in the browser, so in the F# Web Tools we wanted to use JavaScriptĪs well, however in the future, when installation of Silverlight becomes more common, we would like toĪllow using Silverlight as an alternative.į# Web Tools allows you to write client-side code in F# Currently majority of the web applications use Runs on the client-side (in a web browser). Limited client-side environmentįirst of the problems with "Ajax" style applications is that significant part of the application Projects are Volta from Microsoft, Links language įrom the University of Edinburgh and Google Web Toolkit, but none of the projects solveĪll three problems at once. There are a few projects that try to solve some of them already - the most interesting ![]() I think this approach has 3 main problems, which we (the more dynamicity you want, the larger JS files you have to write), which exchanges some data with the server-sideĬode using XmlHttpRequest, typically in JSON format. Traditional "Ajax" application consists of the server-side code and the client-side part written in JavaScript (but this is a different topic, which deserves separate blog post). I would be able to finish the project of similar complexity during less than three months in any other language I could finally work on a large project in F# (and discuss the solution with the real experts!) and I don't believe I also quite enjoyed programming in F# itself - I already used it for a few things during the last year, but Aside from these two key features that F# has, The F# team was also working on a feature called computational expressions, which proved to beĮxtremely useful for the F# Web Tools as well - I bet you'll hear a lot about this from Don soon, so I'llĭescribe only the aspects that are important for this project. Makes it extremely easy to translate part of the page code-behind code to JavaScript. The original reason for using F# was its support for meta-programming (, which To do an internship at MSR, this was one of the projects that I wanted to work on. ![]() Visited Cambridge (thanks to the MVP program) and I had a chance to talk withĭon showed me a few things in F# and suggested using F# for this project, so when I was later selected Server side code and the integration between these two sides, so you could write an event handlerĪnd specify if it should be executed on the client or on the server side. I really wanted from the beginning was using the same language for writing both client and I started thinking about working on "Ajax" framework quite a long time ago - the key thing F# Web Tools: "Ajax" applications made simple - Tomas Petricek TP F# Web Tools "Ajax" applications made simple ![]()
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