shawyunz

//from https://hackernoon.com/please-dont-use-offset-and-limit-for-your-pagination-8ux3u4y

//BAD
SELECT + FRM table_name LIMIT 10 OFFSET 40
//GOOD
SELECT + FRM table_name WHERE id > 40 LIMIT 10

shawyunz

xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"

shawyunz

    //MyEntryRenderer : EntryRenderer
    //for android
    if (Control != null)
    {
        Control.SetBackgroundColor(global::Android.Graphics.Color.LightYellow);
        Control.SetCursorVisible(false);
        Control.SetPadding(0, 0, 0, 0);
        Control.Gravity = GravityFlags.CenterVertical | GravityFlags.Left;
    }

shawyunz

//XAML
WidthRequest = "{x:OnPlatform Android=20, iOS=15, Default=20}"
Source = "{x:OnPlatform iOS='icon1.png', Android='icon2.png'}"

<OnPlatform x:Key="color" x:TypeArguments="x:String">
    <On Platform="Android" Value="Red" />
    <On Platform="iOS" Value="Orange" />
</OnPlatform>

//CSharp

shawyunz

      <Label
          Text="&#xf578;"
          FontFamily="fa5_solid.otf#fa-solid"
          FontSize="20" />

shawyunz

<StackLayout.Resources>
    <ResourceDictionary>
        <Style TargetType="Label">
            <Setter Property="HorizontalOptions" Value="End" />
        </Style>
    </ResourceDictionary>
</StackLayout.Resources>

shawyunz

BtnTop.TranslateTo(0, -70),
BtnTop.FadeTo(1),
BtnLeft.TranslateTo(-70, 0),
BtnLeft.FadeTo(1),
ActionBtn.FadeTo(0.4)

shawyunz

/*
x:Class
xmlns, xmlns:x, xmlns:d, xmlns:mc, mc:Ignorable, xmlns:*
x:Key, Key, x:Name, Name, x:Uid, Uid, Title
x:TypeArguments, x:DataType, x:*
BindingContext, TabIndex
Grid.Row*, Grid.Column*, RowSpacing, ColumnSpacing, AbsoluteLayout.LayoutFlags, AbsoluteLayout.LayoutBounds
IsVisible
Style*
WidthRequest, HeightRequest, MinimumWidthRequest, MinimumHeightRequest, M*Width, M*Height

shawyunz

			this.InitializeComponent ();

shawyunz

//case 1: First
try
{
  var result1 = List.First(x => x == "foo");
}
catch (Exception)
{
  //catch
}