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how to wait a graphql query is finished using apollo?

Last Modified: 2018-03-07
I have the following code :

  ngOnInit() {

    this.data = this.apollo.query({ query: ResidentQuery }).subscribe(({data, loading}) => {
      this.data = data;
      this.loading = loading;

    if (!this.loading) {
      // using this.data
I want data to be loaded before processed themm after the (!this.loading). It is not the case as loading is asynchronous. How I can wait the data is loaded before using them ?

I am making a graphql query using apollo client. ResidentQuery is a string containing the graphql query.

Thank you for your feedbacks !
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