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# Minesweeper Kata

Solution to Minesweeper Kata challenge at Goto Copenhagen 2012 conference "Programming with the Stars" track.

 ``` 1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: 21: 22: 23: 24: 25: 26: 27: 28: 29: 30: 31: 32: 33: 34: ``` ``````let board = "*... .... .*.. ...." let compute (board:string[]) = let value c = match c with | '*' -> 1 | '.' -> 0 | _ -> failwith "Unexpected value" let count (x,y) = [-1,-1; 0,-1; 1,-1 -1, 0; 1, 0 -1, 1; 0, 1; 1, 1] |> List.sumBy (fun (dx,dy) -> let x, y = x + dx, y + dy if y>=0 && y=0 && x value else 0 ) board |> Array.mapi (fun y line -> line.ToCharArray() |> Array.mapi (fun x c -> match c with | '*' -> c | '.' -> '0' + char (count(x,y)) | _ -> failwith "Unexpected value" ) |> fun xs -> (System.String(xs) |> string) ) let view = let options = System.StringSplitOptions.RemoveEmptyEntries let board = board.Split([|'\r';'\n'|], options) compute board ``````
val board : string

Full name: Script.board
val compute : board:string [] -> string []

Full name: Script.compute
val board : string []
Multiple items
val string : value:'T -> string

Full name: Microsoft.FSharp.Core.Operators.string

--------------------
type string = System.String

Full name: Microsoft.FSharp.Core.string
val value : (char -> int)
val c : char
val failwith : message:string -> 'T

Full name: Microsoft.FSharp.Core.Operators.failwith
val count : (int * int -> int)
val x : int
val y : int
Multiple items
module List

from Microsoft.FSharp.Collections

--------------------
type List<'T> =
| ( [] )
| ( :: ) of Head: 'T * Tail: 'T list
interface IEnumerable
interface IEnumerable<'T>
member IsEmpty : bool
member Item : index:int -> 'T with get
member Length : int
member Tail : 'T list
static member Cons : head:'T * tail:'T list -> 'T list
static member Empty : 'T list

Full name: Microsoft.FSharp.Collections.List<_>
val sumBy : projection:('T -> 'U) -> list:'T list -> 'U (requires member ( + ) and member get_Zero)

Full name: Microsoft.FSharp.Collections.List.sumBy
val dx : int
val dy : int
property System.Array.Length: int
module Array

from Microsoft.FSharp.Collections
val mapi : mapping:(int -> 'T -> 'U) -> array:'T [] -> 'U []

Full name: Microsoft.FSharp.Collections.Array.mapi
val line : string
System.String.ToCharArray() : char []
System.String.ToCharArray(startIndex: int, length: int) : char []
Multiple items
val char : value:'T -> char (requires member op_Explicit)

Full name: Microsoft.FSharp.Core.Operators.char

--------------------
type char = System.Char

Full name: Microsoft.FSharp.Core.char
val xs : char []
namespace System
Multiple items
type String =
new : value:char -> string + 7 overloads
member Chars : int -> char
member Clone : unit -> obj
member CompareTo : value:obj -> int + 1 overload
member Contains : value:string -> bool
member CopyTo : sourceIndex:int * destination:char[] * destinationIndex:int * count:int -> unit
member EndsWith : value:string -> bool + 2 overloads
member Equals : obj:obj -> bool + 2 overloads
member GetEnumerator : unit -> CharEnumerator
member GetHashCode : unit -> int
...

Full name: System.String

--------------------
System.String(value: nativeptr<char>) : unit
System.String(value: nativeptr<sbyte>) : unit
System.String(value: char []) : unit
System.String(c: char, count: int) : unit
System.String(value: nativeptr<char>, startIndex: int, length: int) : unit
System.String(value: nativeptr<sbyte>, startIndex: int, length: int) : unit
System.String(value: char [], startIndex: int, length: int) : unit
System.String(value: nativeptr<sbyte>, startIndex: int, length: int, enc: System.Text.Encoding) : unit
val view : string []

Full name: Script.view
val options : System.StringSplitOptions
type StringSplitOptions =
| None = 0
| RemoveEmptyEntries = 1

Full name: System.StringSplitOptions
field System.StringSplitOptions.RemoveEmptyEntries = 1