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Key Differences Between Java and C#

1. Java is a great option for building complex web-based, highly concurrent applications, whereas C# is ideal for game development and mobile development.
2. Java requires Java Development Kit, which includes a Java compiler and runs a time environment to run Java on any machine, whereas C# libraries are being shipped with a .NET framework with IDE like Visual Studio.
3. Source code written in Java is compiled into bytecode, and then bytecode is converted to machine code, ready to run on any platform, whereas with C#, a code is interpreted into bytecode (MSIL) which is compiled by CLR and JIT compiler will convert MSIL into native machine code.
4. Java is designed to execute on JRE (Java Runtime Environment), whereas C# is designed to execute on CLR (Common Language Runtime).
5. Java is heavily used for building a complex application in an open-source ecosystem, whereas C# is mostly used to develop an application for Microsoft platforms.
6. Java provides a clear difference between Checked and Unchecked exceptions, whereas the C# approach is minimalistic in nature by choosing only one type of exception.
7. Java enables the polymorphism by default, whereas with C#, one must invoke the “virtual” keyword in base-class and “override” keyword in a derived class.
8. Java library ecosystem is vast and well documented, which further assist in developing functionality at a decent pace, whereas C# libraries work within the Microsoft ecosystem, which is limited as compared to Java.
9. Java has traditionally a huge community providing open-source libraries, so any need can be fulfilled with the libraries, whereas free quality libraries support from the Microsoft community is a downside for C#.
10. Generic feature support in Java is compiler-assisted, implemented using erasures, whereas C# takes generics further by integrating them into the CLI and allow type information to be available at runtime.

Python from scratch
by University of Waterloo

0. Introduction
1. First steps
2. Built-in functions
3. Storing and using information
4. Creating functions
5. Booleans
6. Branching
7. Building better programs
8. Iteration using while
9. Storing elements in a sequence
10. Iteration using for
11. Bundling information into objects
12. Structuring data
13. Recursion

https://open.cs.uwaterloo.ca/python-from-scratch/

#python

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