Summary: I encounter issues when using ListView with multiple Sections.
```
...
var ds = new ListView.DataSource({
rowHasChanged : (row1, row2) => row1 !== row2,
sectionHeaderHasChanged : (s1, s2) => s1 !== s2
});
...
getInitialState: function() {
var sectionIDs = [0,1,2]
var rowIDs = [
[0,1,2],
[0,1,2],
[0,1,2]
]
var dataBlob = [
[blob0,blob1,blob2],
[blob3,blob4,blob5],
[blob6,blob7,blob8],
]
return {
dataSource : ds.cloneWithRowsAndSections(dataBlob, sectionIDs, rowIDs),
};
```
the code above would throw error because of duplicate key, as ''sectionID0 + rowID0 === sectionID1 + rowID1'. And I have to do:
```
...
sectionIDs.map((id)=>{
return id+'';
});
rowIDs.map((sec)=>{
return sec,map((id)=>{
return id+'';
});
});
...
```
ListView with sections does not seem to be documented yet, so I am not sure if this is the intended behaviour or am I missing anything. Co
Closes https://github.com/facebook/react-native/pull/4082
Reviewed By: svcscm
Differential Revision: D2652028
Pulled By: mkonicek
fb-gh-sync-id: a9933bac1a1ae2d6cbc73a11ef6aefde6fcdb35f
993f15d2fe