Android View is not null, but casting to ViewGroup makes it null
I have an Activity that adds a new view onPostCreate() like so: View rootView = findViewById(android.R.id.content); ((ViewGroup)rootView).addView(myView); When this code runs, I get a...
View Articlecasting opertions on vnode (in NetBSD)
In NetBSD system file usr/src/sys/sys/vnode.h defines structure of a vnode. However, I see that sometime while performing an operation (lets say ufs_getattr) a vnode* is passed as a void* to the called...
View Articlecasting operations on vnode (in NetBSD)
In NetBSD system file usr/src/sys/sys/vnode.h defines structure of a vnode. However, I see that sometime while performing an operation (lets say ufs_getattr) a vnode* is passed as a void* to the called...
View Articlec programming: casting "void pointer" to point to struct
I’m writing this program to practice C programming, this is my code: #include <stdio.h> #include <stdlib.h> struct s1 { int i; void * p; }; static struct s1 *dmk; int main(void) { int...
View ArticleScoped std::unique_ptr cast
I’m currently working on some code using smart pointers in which it is necessary at a number of points to cast these pointers to their base types and pass them as const arguments to functions....
View ArticleCasting to a Generic Primitive class. Method runs without any exception, how...
Here is a method in which I am casting an Object to a primitive type. @SuppressWarnings("unchecked") public <T> T fetchPrimitive(Object object, Class<T> clazz) { return (T)object; } It...
View ArticleCan I call a method of a base object without casting it?
I have a method which will be called using OBJ1 as a parameter. I have a need to write the exact same routine but passing OBJ2 as a paramater. OBJ1 and OBJ2 are not identical but they do have a...
View ArticleWhen casting objects in Java do the object have to be related? [duplicate]
This question already has an answer here: Java rules for casting 5 answers Can you only cast object that are either the superclass/subclass of each other? The post When casting objects in Java do the...
View Articlecasting pointer to pointer to an array
Below is the code snippet. I want to know if line no. 17 typecasting is valid and proper in c? 1 #include <stdio.h> 2 3 typedef int twoInts[2]; 4 5 void print(twoInts *twoIntsPtr); 6 void...
View ArticleHow come I can implicitly but not explicit cast? [duplicate]
This question already has an answer here: Downcasting in Java 9 answers I was testing around with Java and noticed that casting “physically” changes properties of an object. I don’t quite understand...
View ArticleExplicit Casting operator in Java and Polymorphism
I have a small issue with polymorphism and explicit casting. Here is the problem: I have 3 public classes: package x; public class Shape { public void draw(){ System.out.println("draw a Shape"); } }...
View ArticleUsing of AdditionalBound in cast expressions
Can be an AdditionalBound described in JLS8 cast expression be used to cast anything except for lambda expression or a method reference? It is said, that it could be: ( ReferenceType {AdditionalBound}...
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