Instructions

• Expression

  • they can yield results without causing mutation.

  • Expressions work more like a chain: when one person completes a task, they hand off the item to the next person in the chain.

  • Expressions facilitate the Collection Pipeline pattern, which Martin Fowler described as a sequence of operations where one operation’s collected output is fed into the next.

• Statements

  • Statements perform an action but do not yield any results

  • any statement that does something useful will result in a mutation of data.

  • Using statements in your code is like collaborating on a piece of work without being able to directly pass that work between team

    • The only way to share something is by placing it on a table or a shelf, where another team member can then retrieve it.

• Ending of statements

  • ;

• Order of Statements

  • procedural thinking

• Boolean/relational operators (and/or/not)

  • <, >, >=, =< , ==, !=, object.equals(anotherObject)

• Arithmetic/math operations

  • simple operators on primitives

  • use of libraries

    • i.e. abs, ceil

    • see https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html

• Declaring and assigning Variables

• blocks

  • initializer block

Equals & matches

• https://stackoverflow.com/questions/9700115/difference-between-matches-and-equalsignorecase-or-equals-in-string-class

Links

• https://docs.oracle.com/javase/tutorial/java/nutsandbolts/expressions.html

• https://en.wikipedia.org/wiki/Expression_(computer_science)

• https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/statements-expressions-operators/statements

• https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/statements-expressions-operators/expressions

• https://www.thoughtco.com/expression-2034097

• https://stackoverflow.com/questions/18139286/what-is-the-use-of-block-in-java