Notice that the map you pass to the extend function maps from keywords to anonymous functions.

请注意将您传递到 extend 函数的映射从关键字映射到匿名函数。

youdao

A parent class to extend function from (plus any "mix-in" classes to simulate multiple inheritance).

用于扩展函数的父类(以及模拟多个继承的“混合”类)。

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DLL technology used to store the lattice information makes the software extend function or upgrade easily.

用动态链接库来存储字符点阵信息，利于软件功能的扩展和升级。

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"The implications of the work extend beyond the impact of zinc on innate immune function, " he said.

BBC: Zinc 'keeps immune system in check'

This country cannot be expected to function properly if Congress continues to simply extend and patch the tax code.

FORBES: Guest Post: Extending The Tax Cuts