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Salesforce DEX-450 Exam - Topic 4 Question 36 Discussion

Given:Map<ID, Account> accountMap = new Map>ID, Account> ([SELECT Id, Name FROM Account]);What are three valid Apex loop structures for iterating through items in the collection? (Choose three.)
A) for (ID accountID : accountMap.keySet()) {...} and B) for (Account accountRecord : accountMap.values()) {...} and C) for (Integer i=0; I < accountMap.size(); i++) {...}
D) for (ID accountID : accountMap) {...}
E) for (Account accountRecord : accountMap.keySet()) {...}

Salesforce DEX-450 Exam - Topic 4 Question 36 Discussion

Actual exam question for Salesforce's DEX-450 exam
Question #: 36
Topic #: 4
[All DEX-450 Questions]

Given:

Map&lt;ID, Account&gt; accountMap = new Map&gt;ID, Account&gt; ([SELECT Id, Name FROM Account]);

What are three valid Apex loop structures for iterating through items in the collection? (Choose three.)

Show Suggested Answer Hide Answer
Suggested Answer: A, B, C

by Alease at May 03, 2022, 12:40 PM

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Roselle
9 months ago
Wait, are we sure about B? Can you really loop through values like that?
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Lasandra
9 months ago
E looks wrong too, keySet() gives IDs, not Account records.
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Toi
10 months ago
D seems off, you can't iterate a Map directly like that.
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Dorsey
10 months ago
C is not valid, you can't use an index with a Map.
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Jutta
10 months ago
A and B are definitely valid!
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Elly
10 months ago
I practiced a similar question, and I believe option B should work because it lets us loop through the values directly.
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Hui
10 months ago
I'm a bit unsure about option C; I remember we can't use a traditional for loop like that with a Map, right?
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Sage
10 months ago
I think option A is definitely valid since we're iterating over the keys of the map.
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Aimee
10 months ago
I feel like option D is incorrect, but I'm not completely sure why. Can we iterate over a map like that?
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Kiley
10 months ago
The AP failover priority seems like the most straightforward answer. I'll go with that unless I spot something else that seems more likely.
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Venita
10 months ago
Hmm, this looks like a tricky one. I'll need to think through the possible causes carefully.
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