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POHow to create a method of a structure in golang that is called automatically?
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copied!<p>I have to create a something like a substitute of 2 levels of inheritance in golang, i.e., in a package, I have a structure(<strong>A</strong>), which is inherited(embedded as an anonymous field) by another structure(<strong>B</strong>) in another package, whose object is to be utilized by the "<strong>main</strong>" package.</p> <p>Now, I've created an initializer method for the "B" (<strong>BPlease</strong>) that returns an object of B (say,<strong>B_obj</strong>). I can call this initializer(<strong>BPlease</strong>) from my "main" package at the start of the program.</p> <p>One of the methods of "B" (say, <strong>HelloB()</strong>), calls a method of "A"(say,<strong>HelloA()</strong>) during execution, using "B's" object.</p> <p>But what I really want is, something like a constructor for "A" that can initialize its fields (preferably when B_obj was created in package "main") before "B" calls any methods of "A". </p> <p>How to achieve this? </p> <p>I tried creating an initializer(<strong>APlease</strong>) for "A" as well and called it (<strong>BPlease</strong>) to get an object of "A" (A_obj). But I found this object useless as I couldn't utilize it to call "A's" method (HelloA()) inside a method of "B" (HelloB()). It would be great if someone can tell me how to utilize this object (A_obj).</p> <p>Here's some code to clarify my query:</p> <pre><code> package A type A struct { whatever } func (A_obj *A) HelloA(){performs some operation...} // a method of A() func APlease() A { return A{initialize A fields} } ------------------------------------------------------------------------------- package B type B struct { A B fields } func BPlease() B { return B{ A_obj := APlease() // useless to me.... how to utilise this? initialize B fields} } func (B_obj *B) HelloB(){ // a method of B{} call B_obj.HelloA() // valid as A is an anon field in B struct some other operations // but A's fields are not initialized for B_obj ...} --------------------------------------------------- package main import "B" import "A" func main(){ B_obj := B.BPlease() // what I want is, calling this should initialize A's fields for B_obj as well so that when HelloB() calls B_obj.HelloA(), it utilises A's field that have been initialized. } </code></pre> <p>I cannot pass all field-values as parameters to B_obj as there are a lot of fields, and also, some field values are generated by calling a method of the same structure.</p>

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