Understand the difference between Lua's sequence length operator and counting all non-nil table entries.

Return a file's size in bytes with Lua file seeking, or false if the file cannot be opened.

Small Lua helpers for converting angles between degrees and radians.

Split a Lua string by a literal character or multi-character delimiter and return an array.

Call an Android Java method from Cocos2d-x Lua to open a Facebook page in the app, with a web fallback.

A practical guide to if, else if, nested conditions, the ternary operator, and switch in Java.

Understand how Java expressions produce values, statements perform actions, and braces group statements into blocks.

A compact guide to Java arithmetic, assignment, comparison, logical, bitwise, shift, and conditional operators.

The eight Java primitive types, their common uses, literals, ranges, and default values for fields.

Declare, initialize, name, and understand the scope and lifetime of Java variables and fields.