Guarantee of variable value fetched from provider

Asked Dec 10 '18 at 05:42

Active Dec 10 '18 at 07:29

Viewed 43 times

uid is declared in the class using uid=this.auth.getuid();

auth is injected in the constructor.

this.uid is then used in ionViewDidLoad() method.

My question is - whether the assignment of uid=this.auth.getuid() is guranteed to get the value from the injected provider immediately before it is used in ionViewDidLoad() method? OR should I have written the uid=this.auth.getuid() in the constructor? or in the ionViewDidLoad() method as the 1st line?

The way I have initialized the uid varialbe is at class level, not in constructor nor at ionViewDidLoad(); what is such a declaration called? and when is this invoked?

edited Dec 10 '18 at 07:29

asked Dec 10 '18 at 05:42

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check this one https://stackoverflow.com/questions/39869992/what-is-the-purpose-of-the-ionviewdidload-function – Suresh Kumar Ariya Dec 10 '18 at 05:50
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It is not recommended to put anything in constructor. Initialize the variable in`ngOnInit` instead – Sachin Gupta Dec 10 '18 at 05:53
The way I have initialized the uid varialbe is at class level, not in constructor nor at ionViewDidLoad(); what is such a declaration called? and when is this invoked? – variable Dec 10 '18 at 05:56
@SachinGupta please advise on above comment – variable Dec 10 '18 at 06:25

Guarantee of variable value fetched from provider

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