'Ngrx selector direct or composite
I've got this state
export interface State {
error: string | null;
loaded: boolean;
loading: boolean;
data: MyDto | undefined;
}
with this selector
export const selectData = createSelector(selectFeature, (state: MyDto) => {
if (state.data) {
return state.data;
}
return undefined;
});
export const selectError = createSelector(selectFeature, (state: MyDto) => {
return state.error;
});
export const selectLoaded = createSelector(selectFeature, (state: MyDto) => {
return state.loading;
});
export const selectLoading = createSelector(selectFeature, (state: MyDto) => {
return state.loading;
});
to void extra rendering I want to have e single selector what's the best way and why
Direct
export const selectVm = createSelector(selectFeature, (state: MyDto) => {
return state;
});
or
export const selectVm = createSelector(
selectError,
selectLoaded,
selectLoading,
selectData
(error, loaded, loading, data) => {
return {
error,
loaded,
loading,
data
};
}
);
Sources
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Source: Stack Overflow
| Solution | Source |
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