Subject: Re: typescript [was: Re: [xsl] How to write (existential) predicates with maps/Why is there no effective boolean value for a map?] From: "Mukul Gandhi gandhi.mukul@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Thu, 14 Feb 2019 12:08:14 -0000 |
On Wed, Feb 13, 2019 at 4:38 PM Liam R. E. Quin liam@xxxxxxxxxxxxxxxx < xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > > [garbled gibberish here] > Sorry, that was I think the problem of mailer. > Ungarbling, i get, > class Student { > fullName: string; > constructor(public firstName: string, public middleInitial: string, > public lastName: string) { > this.fullName = firstName + " " + middleInitial + " " + lastName; > } > } > > interface Person { > firstName: string; > lastName: string; > } > > function greeter(person : Person) { > return "Hello, " + person.firstName + " " + person.lastName; > } > > let user = new Student("Jane", "M.", "User"); > > document.body.innerHTML = greeter(user); > > So you are asking, does a Student object confom to the Person > interface? That is, does the object have the required public fields. > We can see by inspection that it does.
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