How do I get all objects in Apex?
The Best Ways to retrieve list of all Objects using Apex, you can use Schema. getGlobalDescribe() method. If you need to get next results from record no 201 , 202, add ‘OFFSET 200’ to your query.
Can we use contains in list in Apex?
There are two new List methods: contains(listElement), and indexOf(listElement). The methods take a List element as an argument and return whether the List contains the element or the index in the List, respectively.
What is schema in Salesforce?
Schema is a Namespace which is referred as Database. This namespace contains some classes and their methods to provide metadata information of Schema. Schema class deals with both bulk and single record means you can fetch all objects’ names at once or a single object name.
Which is the best way to get the first object in a list?
This is a better way than .get () or [0] because it does not throw an exception if queryset is empty, Therafore, you don’t need to check using exists () if it’s empty, then returns an empty list, otherwise it returns the first element inside a list.
Is there a limit to how many records can be displayed in apex?
Update To find out if there are more records than can be displayed at once, set your limit one higher, and check for the presence of the max value:
How to get the first element of a set?
Sets, by definition, simply contain elements and have no particular order. Therefore, there is no “first” element you can get, but it is possible to iterate through it using iterator (using the for each loop) or convert it to an array using the toArray () method. Not the answer you’re looking for?
How to get the first element of a list in Java?
Given that the set or list is not empty ( get () on empty optional will throw java.util.NoSuchElementException) Similarly first element of the list can be retrieved. Hope this helps. This is not an exact answer to this question, but in case the objects should be sorted SortedSet has a first () method: