1. Out of the box, Colander can serialize and deserialize various types of objects, including: A mapping object (e.g

2. In C# we write our property names in PascalCase and not Camelcase so if we serialize a object to JSON then the JSON string will contian PascalCase as well

3. 使农业集体化的尝试。 Based on the submarine missile launcher's operational requirements and improving the level of standardize,Communalize,serialize and modularize,discussed the problem of common frame launcher.

4. Collect is mainly to serialize (loss of parallelism preserving all other data characteristics of the dataframe) For example with a PrintWriter pw you can't do direct df.foreach( r => pw.write(r) ), must to use Collect before foreach, df.Collect.foreach(etc).