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Naming a struct with a variable?

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Saar Peles
Saar Peles on 18 Mar 2020
Commented: Saar Peles on 18 Mar 2020
Hi, I'm trying to sort some data into a struct by having a specific part of the struct name be variable. I have a mapping function that designates the name based on the index. This is a simplified version of what I'm trying to code:
AHAmap = [ 6 9 2 17]
S10.AHAmap(3) = 66;
My expectation being that the struct S10.2 equals 66 (or even better S10.AHA3 = 66. I've been stuck for a while so help is appreciated!

  1 Comment

Adam Danz
Adam Danz on 18 Mar 2020
"...by having a specific part of the struct name be variable"
Are you looking for a way to name the variable S10 dynamically?
This is not recommended. Avoid using dynamic variable names to name a structure at all cost. Here are reasons why.
If you're naming the fields, that's a different story (see Steven Lord's answer).

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Accepted Answer

Steven Lord
Steven Lord on 18 Mar 2020
2 isn't a valid struct array field name. But you can do something like your second alternative using dynamic field names.
S = struct();
FN = "apple" + 2 + "c"
S.(FN) = 42 % equivalent to S.apple2c = 42
Search the documentation for "dynamic field names" for more information.

  1 Comment

Saar Peles
Saar Peles on 18 Mar 2020
Holy shit, I think you've saved me. I appreciate the help!

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