initialization Questions
10
Solved
If I don't assign a value to a variable when I declare it, does it default to zero or just whatever was previously in the memory?
e.g.
float x;
Woodrowwoodruff asked 17/5, 2011 at 14:48
10
Solved
What is the proper way to initialize a null variable in .NET? I've been told by one of my colleagues that hard defining of a variable to null is a slowdown.
int var1; // good practice
string s1; /...
Falls asked 28/8, 2010 at 20:16
16
Was there any reason why the designers of Java felt that local variables should not be given a default value? Seriously, if instance variables can be given a default value, then why can't we do the...
Disloyalty asked 6/1, 2009 at 7:3
5
Solved
From "C++ Primer" by Lippman,
When we define a variable, we should give it an initial value unless we are certain that the initial value will be overwritten before the variable is used f...
Astor asked 2/1, 2022 at 17:25
7
Solved
What's meant by parameter (int initialCapacity) in an ArrayList, I thought it's the number of elements but it didn't work when I did this:
public class MyClass {
private ArrayList<Integer> ...
Kata asked 13/11, 2010 at 12:24
4
Solved
Let us consider the following classes
struct test1
{
int a;
int b;
test1() : a(0), b(0) {}
};
struct test2
{
int a;
int b;
test2() { a = 0; b = 0; }
};
Now, I know that test1() constructor ...
Cnossus asked 28/3, 2013 at 10:56
7
Solved
class superClass {}
class subClass extends superClass{}
public class test
{
public static void main()
{
superClass sc1 = new subClass();
subClass sc2 = new subClass();
//whats the differen...
Wiskind asked 24/3, 2013 at 7:34
5
i have a defined a function with a parameter in javascript, and i don't know how to initialize it's parameter, any one help me. the code is bellow
<br/>Enter a number:
<input type="text" ...
Burgomaster asked 7/6, 2015 at 10:31
2
Solved
In studying for the Java certification test I learned that static initialization blocks run once when the class is loaded, in order of appearance within the source code, that instance initializatio...
Supplejack asked 16/12, 2013 at 20:9
17
Solved
Is it possible to initialize structs in C++ as indicated below:
struct address {
int street_no;
char *street_name;
char *city;
char *prov;
char *postal_code;
};
address temp_address = {...
Civilian asked 17/7, 2012 at 5:46
5
Solved
I'm studying for the final exam for my introduction to C++ class. Our professor gave us this problem for practice:
Explain why the code produces the following output: 120 200 16 0
using namespace...
Hightest asked 13/12, 2021 at 20:46
5
Is there a way to automatically bind to self (some of) the arguments of the __init__ method?
For example, suppose we have:
class Person:
def __init__(self, name, age, address):
self.name = name
...
Imprest asked 19/2, 2011 at 1:49
4
Solved
I'm working through a learn-swift playground and upgrading it to Swift 2.0 as I learn the language. The following code (which likely worked with prior versions of Swift) now generates two errors: "...
Andie asked 26/12, 2015 at 19:33
6
C# delegates have always been difficult for me to grasp and so I was very happy to stumble across logicchild's article on The Code Project web site titled "C# Delegates: Step by Step". He has a ver...
Denysedenzil asked 20/9, 2010 at 11:9
2
Solved
This code is taken from IncludeOS github page. I modified it a bit so that it compiles without other header files. find function from IncludeOS is a bit too verbose, so I want to simplify it. But a...
Kozloski asked 25/11, 2017 at 13:56
11
Solved
struct x {
char a[10];
char b[20];
int i;
char *c;
char *d[10];
};
I am filling this struct and then using the values. On the next iteration, I want to reset all the fields to 0 or null befo...
Sulphurize asked 31/7, 2011 at 19:20
1
Solved
In the next program, struct B with deleted copy-constructor is thrown and caught by value:
struct B {
B() = default;
B(const B&) = delete;
};
int main() {
try {
throw B{};
}
catch( B ) {...
Selfevident asked 2/11, 2021 at 8:9
6
Solved
The initialization process of a group of classes that share a common parent can be divided into three parts:
Common initialization
Subclass-specific initialization
Common post-initialization
Cu...
Belew asked 27/4, 2009 at 20:38
1
Typically, we can create an array using brace initialization of dynamic allocation by
int* arr = new int[5]{1,1,2,4,5};
But would this be possible using smart pointers, specifically using std::mak...
Eximious asked 15/10, 2021 at 7:9
8
Solved
I want one long list, say [1,2,3,4,5,15,16,17,18,19] as an example. To initialize this, I try typing:
new_list = [range(1,6),range(15,20)]
However this doesn't do what I want, returning:
[[1, 2...
Mauer asked 19/12, 2012 at 19:15
4
Solved
I read through the main answers on usage of slots and it has given me an idea of how and where to use __slots__ .
Now, I am porting a code from Python 2 to Python 3 which is similar to as followi...
Mephistopheles asked 27/1, 2017 at 11:46
5
Solved
MyClass a1 {a}; // clearer and less error-prone than the other three
MyClass a2 = {a};
MyClass a3 = a;
MyClass a4(a);
Why?
Duaneduarchy asked 14/8, 2013 at 3:56
3
I have a lazy loaded module that I'm trying to add APP_INITIALIZER but its not firing. I have the exact same syntax as my main app where its working as expected. Does a lazy loaded module fire the ...
Transpacific asked 11/4, 2018 at 20:13
11
Solved
I need just dictionary or associative array string => int.
There is type map C++ for this case.
But I need only one map forall instances(-> static) and this map can't be changed(-> const);
I hav...
Neurotic asked 14/4, 2010 at 9:38
4
Solved
I'm having a look at the code at this page:
http://golang.org/pkg/net/http/
And there's one thing I don't understand - at some point, a new structure is created and initialized like this:
client...
Emelinaemeline asked 2/2, 2013 at 16:11
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