一个是分割,一个是连接. 惯例,先看内部帮助文档 Help on method_descriptor: join(...) S.join(iterable) -> string Return a string which is the concatenation of the strings in the iterable. The separator between elements is S. (END) 将可迭代对象(包含的应该是str类型的,不然会报错)连接起来, 返回值是str,用法如…
在java doc里有 String[] java.lang.String.split(String regex) Splits this string around matches of the given regular expression. This method works as if by invoking the two-argument split method with the given expression and a limit argument of zero. Tra…
碰到一个shell中函数调用的小问题,记录一下. shell中函数有三种调用方式,一种是在文件前面定义函数,然后在以下直接调用:一种是通过加载shell,在shell中直接调用:第三种是将函数写入文件.然后在其它shell中调用函数. 这里写一下关于第三种方法的样例: is_it_a_directory() { if [ $# -lt 1 ];then echo "is_it_a_directory:I need an argument" return 1 fi _DIRECTORY_…