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pcon/TestData1.cls

Last active August 29, 2015 14:14
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Fun with maps and sets
Raw
TestData1.cls
class TestData {
public String data;
public TestData() {}
public TestData(String data) {
this.data = data;
}
}
Map<String, TestData> dataMap = new Map<String, TestData>{
'foo' => new TestData('foo'),
'bar' => new TestData('bar')
};
Set<String> keySet = dataMap.keySet();
System.debug(keySet.size()); // 2
System.debug(dataMap.size()); // 2
keySet.remove('foo');
System.debug(keySet.size()); // 1
System.debug(dataMap.size()); // 1
Raw
TestData2.cls
class TestData {
public String data;
public TestData() {}
public TestData(String data) {
this.data = data;
}
}
Map<String, TestData> dataMap = new Map<String, TestData>{
'foo' => new TestData('foo'),
'bar' => new TestData('bar')
};
Set<String> keySet = dataMap.keySet().clone();
System.debug(keySet.size()); // 2
System.debug(dataMap.size()); // 2
keySet.remove('foo');
System.debug(keySet.size()); // 1
System.debug(dataMap.size()); // 2
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