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--- projects:fsharp_workshop [2015/04/17 21:35] – mkucia
+++ projects:fsharp_workshop [2015/04/17 23:03] – mkucia
@@ Line 1: / Line 1: @@
 ====== F# workshop ======
+===== Prerequisites =====
+    * https://www.linqpad.net/ or anything that can execute a REPL((Read, Evaluate, Print Loop))
+<hidden ↘ alternatives>
+    * Try F# in browser: http://www.tryfsharp.org/Create
+    * Use Visual Studio https://www.visualstudio.com/
+    * Get a full distribution: http://fsharp.org/use/windows/ OR http://fsharp.org/use/linux/
+</hidden>
-  * f(x) = Hello_Word
+===== Agenda =====
+  * hello(x)
   * Type providers (strongly typed)
   * Matching
   * Options
-===== How to use? Where to get? =====
-Try F# in browser:
-http://www.tryfsharp.org/Create
-Want to get a full distribution?
+===== hello(x) =====
-http://fsharp.org/ → Use F#
-===== [Hello] =====
 <code fsharp>
 let hello = printf "Hello World"
+hello
 </code>
-===== Why? =====
+<code fsharp>
+let hello x = printfn "Hello %s" x
+hello "world"
+</code>
+<code fsharp>
+let hello x = printfn "Hello %s" x
+"World" |> hello
+</code>
+''|>'' is the pipeline operator
+<code fsharp>
+let square x = x * x
+let subtract x y = x - y
+</code>
+<code fsharp>
+let ``complicated stuff`` x =
+    printfn "%d" (add 5 (square x))
+</code>
+<code fsharp>
+let ``another complicated stuff`` x =
+    x |> square |> subtract 5 |> printfn "%d"
+</code>
+<code fsharp>
+let equation x =
+	x
+	|> (fun y -> y * y )
+	|> (fun y z -> y - z ) 5
+	|> printfn "%d"
+</code>
+===== Why? =====
 <WRAP group>
@@ Line 32: / Line 67: @@
   * Lazy evaluation
   * Reusable
-  * Reduced code
+  * Reduced code (See [[http://theburningmonk.com/2014/12/seven-ineffective-coding-habits-many-f-programmers-dont-have/|signal-to-noise ratio]])
   * Strongly typed
 </WRAP>
@@ Line 39: / Line 74: @@
 Cons:
   * Not suitable for real time (unpredictable performance)
+  * Functional languages fundamentally don't model how your computer works ⇒ harder to optimize.
   * Different thinking process (you need to re-learn)
 </WRAP>
 </WRAP>
-<hidden ↘ C# equivalent>Since you want to know more, here is an explanation with more details […]</hidden>
-===== Pitfalls and drawbacks =====
-Functional languages fundamentally don't model how your computer works.
-Harder to optimize.
 ===== References =====