如何在顶点连接两个地图

Question

I have two maps, different sObject fields are being stored, one for each sObject. I want to add the fields from map1 to the beginning of map2 or vise-versa.

Is it possible to add the contents of one map to another without merging similar fields or keys? Can the values in a map that is an array be placed in such a way that they come after the values of the first map?

Answer 1

You can use the putAll(fromMap) method: https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_methods_system_map.htm

Map<String, String> map1 = new Map<String, String>();
map1.put('Red','FF0000');
Map<String, String> map2 = new Map<String, String>();
map2.put('Blue','0000FF');
// Add map1 entries to map2
map2.putAll(map1);
System.Debug(map2);
//map2 = {Blue=0000FF, Red=FF0000}

If you want to go the other way: map1.putAll(map2);