China DOS Union

What is the difference between double exclamation marks and double percent signs?
I seem to see!n! in the do of for
Others like echo see %n%
Can you talk about this?

tokens=1* What does this mean? I don't understand.

Still, the moderator is really brilliant, I admire it

Tried it myself, using word as a delimiter
@ echo off
set "a=333ps555psssword=123 456 789"
for /f "tokens=1* delims=word" %%i in ("%a%") do set b=%%i&set num=%%j
echo %b:~0,-4% %num%
pause

This question is worth studying... That is, when delims = string, in what way it is split.

Make good use of variables, use more "substitution"

When delims= is a string: For example: If the string is abc, then the delimiters that play a splitting role are a, b, c, ab, ac, bc, abc. Those who have studied permutations and combinations will know that no matter the length of the character, the number of possible delimiters is always: Cn1 + Cn(n-1) +... + Cnn, there are so many possibilities!

Can only be subjectively considered. I mean, what are the characteristics of the string when it is being split, and in what way is it split? I also know from experiments. For example, if the string in delims= has uniqueness, it will use the entire string of letters as the delimiter; otherwise, it will use the first character as the delimiter. It's not accurate enough. Hope the experts can point out!

Originally posted by nanhui112 at 2008-3-8 10:56 PM:
Can only be subjectively considered this way. I mean, what characteristics the string has when it is being split, and in what way it is split.
I also know from experiments. For example, if the characters in delims= have uniqueness...

"delims=abcedef"

No matter what the situation is, the splitting of delims is using each character after the equal sign as the delimiter.

It just seems to use the entire string as the delimiter when it is said to be "unique".

After testing, it can also use a single Chinese character as a separator.
My understanding is that the separator is one byte

Originally posted by 26933062 at 2007-5-26 12:10 AM:
Oh. So that's the case. Does that mean it can only use a single letter or symbol as a separator?

[ Last edited by 26933062 on 2007-8-11 at 05:59 AM ]

Originally posted by wjmm at 2008-7-1 10:03:
After testing, it can also use a Chinese character as a separator,
My understanding is that the separator is one byte

As the 3rd floor said, it can only use a single letter or symbol as a separator, not a byte (one Chinese character is two bytes)

It's really good, I've learned something.

The brother upstairs has an amazing ability to dig up old posts... After reading for a long time, I just realized it's a post from two years ago... But it's also very classic