* @param {string} num 非负整数的字符串形式（可能含前导零）
I started thinking about the side hustle idea at the end of 2024, standing in the pasta aisle at Whole Foods. As a busy working mom, I didn’t always have time to make sauce from scratch, but the options in front of me felt either overpriced, overly processed or outdated. Even the packaging leaned on cliche, old-fashioned depictions of Italy. Nothing felt modern or inspiring.
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Under the new API design, transforms should not perform any work until the data is being consumed. This is a fundamental principle.
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