Detailed Explanation of Variable Delay (Recommended for Beginners) - China DOS Union Forum

Really learned a lot, also read the post of will Sort. Good stuff, this time I finally understand the variable expansion. Thanks

The building owner has worked hard. This post is very useful for newbies like us, and we must support it a little bit.

Collected, thank you, the landlord

Originally posted by willsion at 2007-3-13 01:44:
Additionally, there is a question. I don't know if variable delay has side effects. If there are no side effects, then every program header can simply insert the setlocal EnableDelayedExpansion statement. Just like @echo off.

It should have side effects. I encountered it once when writing code (it was a mistake made by myself). As follows:
:begin
@echo off&setlocal EnableDelayedExpansion
.........................................
........................................
..........................................
goto begin
Originally, :begin was supposed to be placed after '@echo off&setlocal EnableDelayedExpansion'. But after running for a while, it always displayed that the setlocal had reached the maximum limit (I can't remember the original text). The variable delay in P also had errors and became invalid. Due to my limited level, I will stop here for narration. Everyone is welcome to express their opinions. The purpose is to learn and improve together.

Thanks to the LZ, after reading your post, I've learned a lot more.

Just solved my current problem:) Thank you. Previously, in the for, I used set /a n=%%f set /a m=n/16 set /a o=n%16... and couldn't get the correct result, but now it's fixed:)

Thanks to the moderator, I seem to understand a little! I don't know if it means that those delays make echo and other assignment statements effective, and the assignment can be completed without being affected by the running commands of cmd! Still hope the moderator can give some guidance!

Newcomer, not bad. Thanks

I've been wandering in confusion~~ Now I can finally find my way out~~~
So classic~~
Thanks a lot

Thank you very much, the original poster!

The explanation is very clear, hard work, hard work~~~

Thank you very much, the problem that troubled me for 2 days has finally been solved. Also, thank you to the forum.

===I need to look at it for a while to get a bit...

Floor76　plikefly	Posted 2008-02-19 12:20
新手上路　Posts 7　Credits 13
Really learned a lot, also read the post of will Sort. Good stuff, this time I finally understand the variable expansion. Thanks

Floor77　windowsxphao	Posted 2008-03-11 10:46
初级用户　Posts 14　Credits 25
The building owner has worked hard. This post is very useful for newbies like us, and we must support it a little bit.

Floor78　5872169	Posted 2008-03-11 10:48
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Collected, thank you, the landlord

Floor79　bat-zw	Posted 2008-03-11 11:06
金牌会员　Posts 1,276　Credits 3,105
Originally posted by willsion at 2007-3-13 01:44: Additionally, there is a question. I don't know if variable delay has side effects. If there are no side effects, then every program header can simply insert the setlocal EnableDelayedExpansion statement. Just like @echo off. It should have side effects. I encountered it once when writing code (it was a mistake made by myself). As follows: :begin @echo off&setlocal EnableDelayedExpansion ......................................... ........................................ .......................................... goto begin Originally, :begin was supposed to be placed after '@echo off&setlocal EnableDelayedExpansion'. But after running for a while, it always displayed that the setlocal had reached the maximum limit (I can't remember the original text). The variable delay in P also had errors and became invalid. Due to my limited level, I will stop here for narration. Everyone is welcome to express their opinions. The purpose is to learn and improve together.

Floor80　dslz666	Posted 2008-03-18 19:53
中级用户　Posts 117　Credits 233
Thanks to the LZ, after reading your post, I've learned a lot more.

Floor81　zsj008od	Posted 2008-03-19 19:01
初级用户　Posts 12　Credits 28
Just solved my current problem:) Thank you. Previously, in the for, I used set /a n=%%f set /a m=n/16 set /a o=n%16... and couldn't get the correct result, but now it's fixed:)

Floor82　vivifier0923	Posted 2008-04-09 23:37
新手上路　Posts 1　Credits 2
Good stuff

Floor83　gao123	Posted 2008-04-10 14:36
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Floor84　jipinshangren	Posted 2008-04-11 10:41
初级用户　Posts 62　Credits 120　From 四川内江
Thanks to the moderator, I seem to understand a little! I don't know if it means that those delays make echo and other assignment statements effective, and the assignment can be completed without being affected by the running commands of cmd! Still hope the moderator can give some guidance!

Floor85　tswcbyy	Posted 2008-04-11 13:59
新手上路　Posts 7　Credits 14
Newcomer, not bad. Thanks

Floor86　joyn	Posted 2008-05-06 23:50
中级用户　Posts 105　Credits 280　From 广西
I've been wandering in confusion~~ Now I can finally find my way out~~~ So classic~~ Thanks a lot

Floor87　stance	Posted 2008-05-07 18:22
初级用户　Posts 46　Credits 64
Thank you very much, the original poster! The explanation is very clear, hard work, hard work~~~

Floor88　jia332	Posted 2008-05-23 16:15
初级用户　Posts 81　Credits 160
Thank you very much, the problem that troubled me for 2 days has finally been solved. Also, thank you to the forum.

Floor89　hansom	Posted 2008-05-28 00:36
初级用户　Posts 87　Credits 161

Floor90　wgx1688	Posted 2008-07-11 14:36
初级用户　Posts 34　Credits 60
===I need to look at it for a while to get a bit...