I have a Python set that contains objects with __hash__ and __eq__ methods in order to make certain no duplicates are included in the collection. I need to json encode this result set, but passing even an empty set to the json.dumps method raises a TypeError. File “/usr/lib/python2.7/json/encoder.py”, line 201, in encode chunks = self.iterencode(o, … Read more
The question is in the title. Below I just described some of my thoughts and findings. When I had a very simple domain model (3 tables without any relations), all my entities did NOT implement the Serializable interface. But when the domain model became more complex, I got a RuntimeException, saying that one of my … Read more
When I used Eclipse it had a nice feature to generate serial version UID. But what to do in IntelliJ? How to choose or generate identical serial version UID in IntelliJ? And what to do when you modify old class? If you haven’t specify the id, it is generated at runtime… 4 Answers 4
I want to serialize objects to strings, and back. We use protobuf-net to turn an object into a Stream and back, successfully. However, Stream to string and back… not so successful. After going through StreamToString and StringToStream, the new Streamisn’t deserialized by protobuf-net; it raises an Arithmetic Operation resulted in an Overflow exception. If we … Read more
I would like to print an array to a file. I would like the file to look exactly similar like how a code like this looks. print_r ($abc); assuming $abc is an array. Is there any one lines solution for this rather than regular for each look. P.S – I currently use serialize but i … Read more
I wish to use the “encoding/json” package to marshal a struct declared in one of the imported packages of my application. Eg.: type T struct { Foo int } Because it is imported, all available (exported) fields in the struct begins with an upper case letter. But I wish to have lower case key names: … Read more
I just realized that json.dumps() adds spaces in the JSON object e.g. {‘duration’: ’02:55′, ‘name’: ‘flower’, ‘chg’: 0} how can remove the spaces in order to make the JSON more compact and save bytes to be sent via HTTP? such as: {‘duration’:’02:55′,’name’:’flower’,’chg’:0} 3 Answers 3
I am getting started with Object-Oriented Programming (OOP) and would like to know: what is the meaning of serialization in OOP parlance? 15 Answers 15
I am trying to serialize a .NET TimeSpan object to XML and it is not working. A quick google has suggested that while TimeSpan is serializable, the XmlCustomFormatter does not provide methods to convert TimeSpan objects to and from XML. One suggested approach was to ignore the TimeSpan for serialization, and instead serialize the result … Read more
I’ll admit that I’m a bit of a ruby newbie (writing rake scripts, now). In most languages, copy constructors are easy to find. Half an hour of searching didn’t find it in ruby. I want to create a copy of the hash so that I can modify it without affecting the original instance. Some expected … Read more
