Unicode 解說

map/filter/reduce

map([🌽, 🐮, 🐔], cook) => [🍿, 🍔, 🍳]
filter([🍿, 🍔, 🍳], isVegetarian) => [🍿, 🍳]
reduce([🍿, 🍳], eat) => 💩

加密

🔑 Public Key
🗝 Private Key
📝 Message
📝+🔑 = 🔒✉️ Encrypted
🔒✉️+🗝 = 🔓📝 Decrypted
📝+🗝 = 🔏✉️ Signed
🔏✉️ + 🔑 = 👤 Authenticated

演算法複雜度

Big👌 notation:
O(1): O👏
O(log n): O👍
O(n): O👎
O(n^c): O✋
O(c^n): O👊
O(n!): O🖕