add formatted console output for ISeries lists

[DaveSkender]

the problem

This is a quirky helper utility to convert IEnumerable<ISeries> (quotes and results lists) to a fixed width, CSV, or JSON string. Mostly, I'm thinking this is helpful anyone debugging or wanting to output something to Console for quick visual inspections or general development sharing. Default is OutType.FixedWidth, since I mostly had Console output and .NET Fiddle use in mind.

 i  Timestamp     Open    High     Low   Close    Volume
--------------------------------------------------------
 1  2017-01-03  212.61  213.35  211.52  212.80  96708880
 2  2017-01-04  213.16  214.22  213.15  214.06  83348752
 3  2017-01-05  213.77  214.06  213.02  213.89  82961968
 4  2017-01-06  214.02  215.17  213.42  214.66  75744152
 5  2017-01-09  214.38  214.53  213.91  213.95  49684316
 6  2017-01-10  213.97  214.89  213.52  213.95  67500792
 7  2017-01-11  213.86  214.55  213.13  214.55  79014928
 8  2017-01-12  213.99  214.22  212.53  214.02  76329760
 9  2017-01-13  214.21  214.84  214.17  214.51  66385084
10  2017-01-17  213.81  214.25  213.33  213.75  64821664
11  2017-01-18  214.02  214.27  213.42  214.22  57997156
12  2017-01-19  214.31  214.46  212.96  213.43  70503512

Must do

• properties with [JsonIgnore] attribute are excluded

• include optional formatting args

  • All fields can have named formatting preferences in args, for example:

    Dictionary<string, string> args new() = 
    {
        { "Open", "N2" },
        { "High", "N2" },
        { "Low", "N2" },
        { "Close", "N2" },
        { "Volume", "N0" }, // No decimal places
        { "Date", "yyyy-MM-dd HH:mm" } // Include milliseconds
    };

  • args can also target specific primitive types, but also allow overrides based on sequencing in the args list (last format wins)

    Dictionary<string, string> args new() = 
    {
        { "decimal", "N2" },
        { "Volume", "N0" },            // override decimal places
        { "Date", "yyyy-MM-dd HH:mm" } // Include milliseconds
    };

  • when args or individual properties aren't covered, do not apply formatting

• include overloads

  • .ToStringOut(Dictionary<object,string> args? = null) is the standard
  • .ToStringOut(int limitQty, Dictionary<object,string> args? = null) limits to the first X
  • .ToStringOut(int startIndex, int endIndex, Dictionary<object,string> args? = null) between a range