grin | Minimal implementation of the Mimblewimble protocol | Cryptography library

I have a program that sorts/displays emojis in different category's. This program has an edit button where the user is able to move an "entry"/cell then when they click done the program re-adjusts. The array(s) should update and so should the running totals at the bottom of each section.

The problem is that when the moving in complete, if a category now does not have a cell the program crash. The other problem is that when moving a cell, it pushes another cell to replace it.

Meaning if the category "People" has four cells and I move one cell another cell from a different category takes its place.

I believe the problem is in the chunk of code:

I have a program that sorts/displays emojis in different category's. This program has an edit button where the user should be able to delete or move an "entry" then when they click done the program re-adjusts. The array(s) should update and so should the running totals at the bottom of each section.

I'm not sure where the problem lies. The error message is:

"Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of sections. The number of sections contained in the table view after the update (3) must be equal to the number of sections contained in the table view before the update (4), plus or minus the number of sections inserted or deleted (0 inserted, 0 deleted)."

Current Code:

I have created an array of arrays for emojis and separated the emojis into their proper grouping.

Step 1: Your array is an array of array of Emojis. So the type is not [Emoji] anymore. Its more like [[Emoji]]. Which means you can get access to the third grouping with a double index, such as:

let groupThirdCount = emojis[2].count

Note that emojis.count will no longer return the number of emojis, but rather than number of arrays of emojis.

Step 2: Update the datasource methods numberOfSections and numberOfRowsInSection to return the number of emojis based on which section is asked for.

Edited Code:

Consider the following array of emojis:

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