Intermediate Notes - Page 7

Java

StringBuilder and StringBuffer in Java

When text is built piece by piece, a mutable buffer avoids the copying that repeated String concatenation forces.

Java

Multidimensional and Jagged Arrays in Java

Java has no true two dimensional array. It has arrays of arrays, which is what makes jagged shapes possible.

Java

Pass by Value in Java

Java always passes arguments by value. For objects the value copied is the reference, which explains every result that looks like pass by reference.

Java

Varargs in Java

A variable arity parameter lets a method accept any number of arguments, and inside the method it is simply an array.

Java

Recursion in Java

A recursive method calls itself on a smaller problem, and it works only when a base case guarantees the shrinking stops.

HTML

HTML MCQ Set 2: Intermediate

Thirty questions on tables, forms, semantic elements, metadata and accessibility. Harder than set one, and still questions only.

HTML

HTML Performance Best Practices

What the markup alone can do for speed, with no build tooling: resource hints, image discipline, script loading and the small set of attributes that m...

HTML

Clean HTML: Structure, Naming and Maintainability

Markup you can still read in six months. Consistent conventions, meaningful names, shallow nesting and a house style that survives more than one devel...

HTML

A Working Setup: Formatting, Linting and Live Preview

Consistent formatting, markup linting, live reload and shared settings. A day of setup that pays back on every file afterwards.

HTML

Editor Shortcuts and Multi Cursor Editing

Multi cursor editing changes what feels possible in a file. These shortcuts are worth the twenty minutes it takes to build the habit.

SQL

Intermediate Practice: Joins and Aggregation

Fifteen exercises combining joins, grouping and having, each with the solution and a note on the trap it was designed to expose.

SQL

Writing Portable SQL

How much portability is worth paying for, which constructs are safe everywhere, and how to isolate the parts that can never be portable.