Solve a second set of C exercises covering Fibonacci numbers, matrices, binary conversion, loops, arrays, strings, functions, and basic algorithms.
Install lua-cjson with LuaRocks or Source and Verify JSON Encoding
Install lua-cjson with LuaRocks or from source, resolve compiler and Lua header requirements, then verify JSON encoding and decoding with a small Lua program.
python Pygame Tetris: Grid, Rotation, Collision Detection and Line Clears
Build a Tetris-style python Pygame game with a board matrix, tetromino rotations, collision checks, piece locking, line clearing, scoring, and keyboard input.
Draw a Brown Bear with python Turtle: Shapes, Fill and Layering
Draw a brown bear character with python Turtle using circles, filled shapes, coordinates, headings, and layered pen movement in a beginner-friendly example.
Cocos2d-x Lua Nine-Slice Scaling: Resize UI with Scale9Sprite
Resize Cocos2d-x Lua panels and buttons without distorting corners by using Scale9Sprite, cap insets, content size, and reusable nine-slice UI textures.
Send a One-Time WeChat Reminder with python and itchat
Log in with python itchat, find a consenting WeChat contact by nickname, and send one user-confirmed reminder while avoiding spam and account risk.
python Tkinter Workday Countdown: Live Timer, Reminder and Scheduling
Build a responsive python Tkinter workday countdown that displays current time and remaining duration, then shows a reminder at a selected end time.
Cocos2d-x Lua ProgressTimer: Build a Radial Skill Cooldown
Build a radial skill cooldown in Cocos2d-x 3.17 Lua with cc.ProgressTimer, midpoint, radial type, reverse direction, percentage values, and animated progress.
Cocos2d-x Lua Timers with scheduleGlobal, Callbacks and Cancellation
Schedule repeated callbacks with framework.scheduler.scheduleGlobal, retain the returned timer handle, and cancel it with unscheduleGlobal during cleanup.
Cocos2d-x Lua Render Order: setLocalZOrder and Sibling Nodes
Control Cocos2d-x Lua sibling rendering order with setLocalZOrder, understand larger and equal Z-order values, child arrival order, and scene-graph branch limits.