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v-memo in v-for, only memoize until the first changed item #10392

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chuchiperriman opened this issue Feb 23, 2024 · 1 comment · May be fixed by #10431
Open

v-memo in v-for, only memoize until the first changed item #10392

chuchiperriman opened this issue Feb 23, 2024 · 1 comment · May be fixed by #10431

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@chuchiperriman
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Vue version

3.4.15

Link to minimal reproduction

https://play.vuejs.org/#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

Steps to reproduce

Create an element with v-for and v-memo (like the example in the documentation). Then modify or remote one element. This element is updated and all the following elements too, it is not correct. If you have 1000 rows and try to remove he second row, then update all the 998 folloing components

What is expected?

Vue should delete (or update) only the deleted element and not update any of the following elements

What is actually happening?

Vue is updating the modified element and following too.

System Info

No response

Any additional comments?

No response
@chuchiperriman chuchiperriman changed the title v-memo in v-for, only memoize unti the first changed item v-memo in v-for, only memoize until the first changed item Feb 23, 2024
Doctor-wu added a commit to Doctor-wu/core that referenced this issue Feb 29, 2024
@Doctor-wu
fix(compiler-core, runtime-core): fix unexpected render in v-for & v-…
9be44b4 
…memo

close vuejs#10392
@Doctor-wu Doctor-wu linked a pull request Feb 29, 2024 that will close this issue
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@baiwusanyu-c
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/ecosystem-ci run

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fix(compiler-core, runtime-core): fix unexpected render in v-for & v-memo Doctor-wu/core
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@chuchiperriman @baiwusanyu-c