Exam CRT-450 topic 1 question 80 discussion

Actual exam question from Salesforce's CRT-450

Question #: 80
Topic #: 1

[All CRT-450 Questions]

Which two statements are acceptable for a developer to use inside procedural loops? (Choose two.)

A. delete contactList;
B. contactList.remove(i);
C. Contact con = new Contact();
D. Account a = [SELECT Id, Name FROM Account WHERE Id = :con.AccountId LIMIT 1];

Show Suggested Answer

Suggested Answer: BC 🗳️

by de2rick at May 21, 2023, 6:37 a.m.

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BeatrizBernardo

Highly Voted 1 year, 5 months ago

Selected Answer: BC

better explain why not D is a right answer, can it the governor limits https://trailhead.salesforce.com/trailblazer-community/feed/0D54S00000A8GHjSAN

upvoted 5 times

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ABHI0O07

Most Recent 8 months, 2 weeks ago

do not ever use dml statements or querying records inside loops.so b and c are correct

upvoted 1 times

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edogaldo

1 year, 2 months ago

also this might be interesting: https://salesforce.stackexchange.com/questions/76912/can-i-remove-element-from-a-list-being-looped-through

upvoted 1 times

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B is not correct, normally there will be a compile error ERROR: Cannot modify a collection while it is being iterated. (FOR i loop could compile but out of index error eventually) D is correct even though the SOQL query in a loop is not the best practice but it can be complied properly

upvoted 1 times

edogaldo

1 year, 2 months ago

"D is correct even though the SOQL query in a loop is not the best practice but it can be complied properly": it would be the same also for A then...

upvoted 2 times

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sfarchex137

1 year, 3 months ago

Regardless of limit, the loop exceeds governor limits if it executes a large number of times. BC is the right answer

upvoted 2 times

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