这确保可以通过此变量中列出的目录访问脚本调用的所有程序、实用程序、函数、脚本等等。

This is to ensure that all programs, utilities, functions, scripts, and more called by the script are accessible using a listed directory in the variable.

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一种非常实用的方法是编写本地不纯(即声明和修改本地变量)但在全局为纯的函数。

One approach that can be very useful is to write functions that are locally impure (that is, they declare and modify local variables) but are globally pure.

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本文阐述了变量卡诺图和函数卡诺图的实用画法；推出了用卡诺图表示和化简逻辑函数的简捷方法。

This article describes the useful graphic representation of variables and functions' Karnaugh map, inferred a concise method to show and simplify the logical functions with the Karnaugh map.

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