Learn how to call your reply function from the main function of your bot project, using the railway-oriented programming style.
- [Instructor] And then, the very final step…in coding terms, is to actually call something…in our main function.…And, this is it.…We're going to do a GetSession…which again is the function we wrote…to read credentials and…to establish a connection with Twitter.…And, if that succeeds, and you'll recognize that…from Choice.either, if that succeeds,…we are going to call Twitter.Monitor.…Which again, we wrote in a previous video,…providing the session is an argument…and providing a reference to this function…as a second argument.…
So, essentially what we're saying there…is listen to the tweet stream,…and every time you get a tweet that meets the criteria,…call this function.…And, provide into this function,…the session we're dealing with…and the tweet that came in.…And then we're going to provide a little bit of feedback…to the user saying the bot is running.…This is the failure branch from Choice.either.…And in that case, really, we can't do much apart…from putting a message on the console.…And that will be because we can't connect…
Author
Released
12/20/2016- Defining values and calling functions in F#
- Defining and identifying discriminated unions
- Working with if-else expressions
- Writing unit test
- Using type providers to access data
- Analyzing data with collection functions
- Plotting data using the R type provider
- Using railway-oriented programming to handle errors
- Integrating with Twitter
- Deploying an F# application to Azure
Skill Level Intermediate
Duration
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Introduction
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Welcome59s
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Exercise files41s
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1. Get Started with F#
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Record type and arrays2m 35s
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Forward piping3m 39s
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Array mapping and iteration6m 22s
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If-else expressions2m 9s
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Exception handling2m 40s
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Option types5m 9s
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The bot and type signatures4m 19s
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2. Build a Simple Parser with Unit Testing
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Install NUnit4m 23s
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Write a real test4m 31s
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Write a parser5m 8s
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Refactor tests5m 18s
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Test unhappy paths4m 1s
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Challenge35s
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Solution3m 38s
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3. Use F# CSV Type Provider to Get Data
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Recap and code tidy-up1m 51s
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Introducing Quandl1m 52s
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Challenge1m 14s
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Solution9m 34s
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4. Analyze Data with F# Collection Functions
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5. Use RStats Provider and ggplot2 to Plot Data
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RStats and ggplot21m 38s
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Develop the chart generator5m 45s
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Challenge38s
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Solution2m 21s
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6. Use BoxKite with Twitter
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Create a Twitter application5m 24s
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React to directed tweets4m 47s
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7. Deploy a Working Bot
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Call the reply function1m 17s
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Try the bot running locally1m 53s
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Understanding ROP2m 37s
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Conclusion
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Next steps1m 46s
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Video: Call the reply function