备查: zmud学习笔记 20131227

aea

#file 1 "pkuxkx/"@sj_book".txt"
rd=%grep(1,@sj_neirong)
#close 1
#show @rd
#if (%pos( "--", @rd)>0) {rd1=chanting %word( @rd, 4, "--") %word( @rd, 3, "--")}
#EXEC @rd1


打开  目录 pkuxkx 下 @sj_book.txt 文件

%grep 返回行数
Syntax: %grep(i,s)
search the ith file and return lines that match the pattern in s.

#case (%null(@hdtemp)+1) {#sh A！} {#sh B！}
当hdtemp为空,0+1   非空，1+1，分别运行显示A  B

#if %pos(|@answer1|,@hdtemp) {answer 1}
如果，@hdtemp中含有 |@answer1|,则非空，运行 answer 1
Syntax: %pos(p,s)
return the position of pattern p in string s.  Return 0/false if not found
Examples:
#SHOW %pos(ABC,12AB56ABC10ABC)
displays: 7

#if (%pos( "--", @rd)>0) {rd1=chanting %word( @rd, 4, "--") %word( @rd, 3, "--")}
#exec @rd1
当--在@rd中存在，运行 @rd1

Syntax: %word(s,i,d)
return the ith word of string s, delimited by string d (if d is missing, a space is used as the word delimiter
Examples:
#SHOW %word("abc defg hijk lm",3)
displays:
hijk
#SHOW %word("This, is a, test.",2,", ")
displays:
is a

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