# SPDX license identifier not provided in source file.

By [Panda](https://paragraph.com/@panda-2) · 2021-12-01

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sol编译时出现警告 在.sol文件第一句加上

    // SPDX-License-Identifier: SimPL-2.0

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*Originally published on [Panda](https://paragraph.com/@panda-2/spdx-license-identifier-not-provided-in-source-file)*