質問

Why does the course at Stanford use the lazy initialization for all getters?

Is this correct? Does it have any real advantage?

One advantage (for me) is that the init method can become much shorter and you need not check if a variable is allocated.

正しい解決策はありません

他のヒント

The idea is to load resources on demand. This way everything loads faster and when needed. In the cases it's not used, it doesn't allocate additional memory.

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