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I can help you fix the problem that you experience with Solanas “Memfilter” in MemcMP. The error message indicates that there is no attribute “offset” called “Offset”. Here you will find a step-by-step instructions for solving this problem:
Understand the context
In MemcMP you usually use the following options:
MemcMPopts: Options for MemcMP queries.
Dataslicopts: Options for data cut comparisons.
When executing a Memfilter query, you must provide key and offset (or slice) for filter data. The offset is used to determine which memory panes can be compared.
Possible causes of the error
- False key structure : Make sure that your keys for MemcMP are in the right format. Keys should be tupes or lists that contain the “address” and a reference to either the “pubkey”, “index” or another value.
- missing offset : Make sure you offer an offset when executing the query. If no offset is provided, Solana will be 0.
- Invalid slice comparison : Check whether your disc comparisons are correct. In MemcMP, cuts can be compared using various operators (e.g.
==,! =,<, `Etc.).
Dissolving the problem
- Check your key structure : Check your keys and make sure that you meet the requirements for MemcMP. You can use tools such as "Solana-Key-Utils" or print out your keys to check your format.
- Enter an offset (if necessary) : If you use a certain SLICE comparison operator, make sure that you enter an offset for this operator. For example, if you compare slices based on your addresses, you must specify the "Offset" button in your MemcMPopts structure.
- Check the slice comparisons
: Check your disc comparisons to ensure that you are correct. You can use tools such as "Solana-Key-Utils" or print out your keys to check your format and correctness.
Example code
Python
Import MemcMPs, Dataslicopts by Solana.rpc.types
Create a sample key with OFFSET 0
Key = ("My_Key", {"address": "My_PubKey", "Index": 1})
Create the key and the offset memcpops structure
opts = memcpops (
Key = key,
Slice = "data_slice",
Operator = "==",
Example comparison operator
)))
Execute the Memfilter query
Result = waiting mem_filter (opts)
In this example, we create an example “key” tupel with an offset of 0. We then define “opts” as a structure that contains the options of keys and slice. Finally, we carry out the Memfilter query with the function Mem_Filter ().
I hope this will help you solve the problem! If you have any further questions or need more help, please do not hesitate to ask.