DavidBrower

open System

let sumOfSquares = 
    [|1 .. 100|]
    |> Array.map (fun x -> x * x)
    |> Array.sum

let squareOfSum = 
    [|1 .. 100|]
    |> Array.sum

DavidBrower

open System

let isPrime (n : int64) =
    let upperBound = n |> float |> sqrt |> int64
    seq {2L .. upperBound}
        |> Seq.forall (fun x -> n % x <> 0L)

Seq.unfold (fun x -> Some(x, x + 1L)) 1L
    |> Seq.filter isPrime
    |> Seq.nth 10001

DavidBrower

sum [x | x <- [1..999], mod x 3 == 0 || mod x 5 == 0]

DavidBrower

    /// <summary>
    /// Instantiates TClass using a compiled lambda expression and caches it. This assumes a parameterless constructor.
    /// </summary>
    /// <typeparam name="TClass">The type of the class to be instantiated.</typeparam>
    internal static class New<TClass> where TClass : class
    {
        public static readonly Func<TClass> Instance = Expression.Lambda<Func<TClass>>(Expression.New(typeof(TClass))).Compile();

        /// <summary>
        /// Allows a class to be instantiated using a parameterised constructor

DavidBrower

  using System;

  public static class TypeSwitch
  {
      public class CaseInfo
      {
          public bool IsDefault { get; set; }
          public Type Target { get; set; }
          public Func<object, string> Action { get; set; }
      }

DavidBrower

select
      name
    , filename
    , convert(decimal(12,2),round(a.size/128.000,2)) as FileSizeMB
    , convert(decimal(12,2),round(fileproperty(a.name,'SpaceUsed')/128.000,2)) as SpaceUsedMB
    , convert(decimal(12,2),round((a.size-fileproperty(a.name,'SpaceUsed'))/128.000,2)) as FreeSpaceMB
from dbo.sysfiles a

DavidBrower

DECLARE @TableName sysname
SET @TableName = 'table_name'

SELECT OBJECT_NAME(object_id) as [Table Name], format(SUM(row_count), '###,###') AS [Row Count]
FROM sys.dm_db_partition_stats
WHERE object_id = OBJECT_ID(@TableName)
AND index_id < 2
GROUP BY OBJECT_NAME(object_id);

DavidBrower

 public abstract class ValueObject<T> : IEquatable<T> where T : ValueObject<T>
    {
        private List<PropertyInfo> Properties { get; }

        protected ValueObject()
        {
            Properties = new List<PropertyInfo>();
        }

        public override Boolean Equals(object obj)

DavidBrower

# Set PowerShell execution policy
Set-ExecutionPolicy Unrestricted
Set-ExecutionPolicy Bypass -Scope Process -Force

# Install Chocolatey
ex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))

# Install Boxstarter
. { iwr -useb http://boxstarter.org/bootstrapper.ps1 } | iex; get-boxstarter -Force

DavidBrower

# Configure Windows
Set-WindowsExplorerOptions -EnableShowHiddenFilesFoldersDrives -EnableShowProtectedOSFiles -EnableShowFileExtensions -EnableShowFullPathInTitleBar

Update-ExecutionPolicy Unrestricted

# cinst -y Microsoft-Hyper-V-All -source windowsFeatures

#Visual Studio 2017 Community Edition
cinst -y visualstudio2017community