ConceptsAndDefinitions.md

• 1. Brackets
• 2. Namespaces
• 3. Solution
• 4. Statement
  • 4.1. Syntax
  • 4.2. Semantics
• 5. Variable

1. Brackets

• Parentheses or round brackets: ( )
• Term braces or Curly brackets: { }
• Square brackets: [ ]

2. Namespaces

• Classes are grouped into namespaces and compiled into assemblies.
• An assemblie is a file that can be a .dll or an .exe
• When a new project is created a default namespace is created and used, it is called NameOfTheProject namespace
• The using directive brings the items in a namespace into scope.
• There is no an 1:1 equivalence between an assembly and a namespace.
  • A single assembly can contain classes defined in many namespaces
  • A single namespace can span between multiple assemblies
• IF a using directive appears grayed-out, it is not currently used by the application.

3. Solution

• It has the .sln suffix.
• It can contain one or more projects (which has the csproj suffix).

4. Statement

• It is a command that performs an action. e.g:
  • Calculate a value
  • Store a result
  • display a message

4.1. Syntax

• Set of rules describing their format and construction. e.g.:
  • An statement shall terminate with a semicolon (;).
• C# is a free-format language i.e., a white-space or a new-line are not significant except as a separator.
• C# is a case-sensitive language i.e., a dog and Dog are different.

4.2. Semantics

• It is the specification of what statement do.

5. Variable

• It is a storage location that holds a value.