小编acc*_*der的帖子

为什么在配置中定义与WillCascadeOnDelete(false)的关系在生成的迁移中始终为真？

这是配置代码

 public class PartySuppliesConfiguration:EntityTypeConfiguration<PartySupplies>
{
    public PartySuppliesConfiguration()
    {
        HasKey(x => x.Id);
        HasRequired(x=>x.Supplier).WithMany().HasForeignKey(x=>x.SupplierId).WillCascadeOnDelete(false);
        HasRequired(x => x.Product).WithMany().HasForeignKey(x => x.ProductId).WillCascadeOnDelete(false);
        HasRequired(x => x.Currency).WithMany().HasForeignKey(x => x.CurrencyId).WillCascadeOnDelete(false);
        HasRequired(x => x.CreatedUser).WithMany().HasForeignKey(x => x.CreatedUserId).WillCascadeOnDelete(false);
        Property(x => x.UnitPrice).HasColumnType("Money");
    }
}

这是生成的迁移

 public override void Up()
    {
        CreateTable(
            "PartySupplies",
            c => new
                {
                    Id = c.Int(nullable: false, identity: true),
                    SupplierId = c.Int(nullable: false),
                    ProductId = c.Int(nullable: false),
                    UnitPrice = c.Decimal(nullable: false, precision: 18, scale: 2),
                    CurrencyId = c.Int(nullable: false),
                    FromDate = c.DateTime(nullable: false),
                    ThruDate = c.DateTime(),
                    CreatedUserId = …

有人可以告诉我为什么下面的函数需要整数[]而不是byte []

type Node =
    | InternalNode of int*Node*Node
    | LeafNode of int * byte

let weight node =
    match node with 
    |InternalNode(w,_,_) -> w
    |LeafNode(w,_)-> w

let createNodes inputValues =
    let getCounts (leafNodes:(int*byte)[])= 
        inputValues |>Array.iter
            (fun b-> let (w,v) =leafNodes.[(int)b]
                     leafNodes.[(int)b]<-(w+1,v))

        leafNodes
    [|for b in 0uy..255uy -> (0 ,b)|] |>getCounts
    |>List.ofArray
    |>List.map LeafNode