没有其它变量。
Can a pure function have free variables?
一个纯粹的函数可以有自由变量?
Unset your variables to free memory, especially large arrays.
注销那些不用的变量尤其是大数组,以便释放内存。
Unset your variables to free memory, especially large arrays.
注销那些不必的变量尤其是大数组,以便开释内存。
Unset your variables to free memory, especially large arrays.
注销那些不必的变量尤其是大数组,以便开释内存。
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