record

Algorithms

• Big O
• Hashing
• Trees/Graphs
• Heaps
• Python sliding window: longest subarray type / number of subarray type O(n)

System Design

Following system-design-primer.

• Scalability

iOS

• Swift Basics: 100 Days of Swift (Day 1-15)
• UIKit Basics
• Profiling: Instruments Tutorials

Open Source Contributions

• Git micro project: +git log -p {litdd} $area_you_are_modifying+ and ask contributors for better solution in mailing list. find branch HEAD to work with. test and documentation git diff –check before commit git log convention

create local branch git checkout -b psuh origin/master

git commands -> builtin.h and builtin/cmd_push.c