CurtHagenlocher

let
    Value.WaitFor = (producer as function, interval as function, optional count as number) as any =>
        let
            list = List.Generate(
                () => {0, null},
                (state) => state{0} <> null and (count = null or state{0} < count),
                (state) => if state{1} <> null
                    then {null, state{1}}
                    else {1 + state{0}, Function.InvokeAfter(() => producer(state{0}), interval(state{0}))},
                (state) => state{1})

CurtHagenlocher

let
    Source = Text.FromBinary(File.Contents("D:\testdata\tweet.json")),
    Eol = Text.PositionOf(Source, "#(lf)"),
    Skipped = Text.Range(Source, Eol + 1),
    Tweets = Json.Document(Skipped)
in
    Tweets

CurtHagenlocher

let
    Source = Table.FromColumns({Lines.FromBinary(Web.Contents("http://www.aer.ca/data/WELLS/SPUDTHU.TXT"),null,null,1252)}),
    Header = List.First(List.Select(Source[Column1], each Text.StartsWith(_, "--"))),
    Positions = Text.PositionOf(Header, " ", -1),
    Length = Text.Length(Header),
    Lengths = List.Generate(
        () => 0,
        (i) => i <= List.Count(Positions),
        (i) => i + 1,
        (i) => 

CurtHagenlocher

    public class StringFormat : IDynamicMetaObjectProvider
    {
        /// <summary>
        /// Usage: StringFormat.Format(formatString, key1: value1, key2: value2)
        /// or StringFormat.Format(formatProvider, formatString, key1: value1, key2: value2)
        /// </summary>
        public static readonly dynamic Format = new StringFormat();

        private StringFormat()
        {

CurtHagenlocher

    public class UrlBuilder : IDynamicMetaObjectProvider
    {
        /// <summary>
        /// Usage: UrlBuilder.Build(url, key1: value1, key2: value2)
        /// </summary>
        /// <remarks>
        /// values will be converted to strings via "ToString()". Any url-encoding must happen before 
        /// this method is called. Pass null as the value at runtime in order to omit the parameter
        /// entirely. Use String.Empty for query parameters which should be present but have no value.
        /// If url is a string, the result will be a string. If it is a System.Uri, the result will