一.打开.关闭文件 open的返回值用来确定打开文件的操作是否成功,当其成功时返回非零值,失败时返回零,因此可以如下判断: if (open(MYFILE, "myfile")) { # here is what to do if the file opened successfully } 当文件操作完毕后,用close(MYFILE); 关闭文件. 读:open(文件句柄,"<文件名") open(文件句柄,
---------第十四章 字符串与排序------------------- index查找子字符串 my $stuff = "howdy world!"; my $where = index($stuff, "wor"); #6 #返回首个字符匹配的位置,字符串第一个位置为0,上例即wor匹配的w位置 #无法匹配返回-1 my $here = index($stuff,"w",2); #返回2(从2+1个字符开始) my $there = i
本文只涉及一些案例,具体查看 DoTween 官方文档. 一. Basics public class Basics : MonoBehaviour { public Transform redCube, greenCube, blueCube, purpleCube; IEnumerator Start() { // Start after one second delay (to ignore Unity hiccups when activating Play mode in Editor