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Difference between Inheritance and Composition
...ing with class X. If anything changes in superclass X , Y may break dramatically. Suppose In future class X implements a method work with below signature
public int work(){
}
Change is done in class X but it will make class Y uncompilable. SO this kind of dependency can go up to any level and it ...
How to check if an object is nullable?
...ng the obj parameter purely for generic type inference (to make it easy to call) - it would work almost identically without the obj param, though.
static bool IsNullable<T>(T obj)
{
if (obj == null) return true; // obvious
Type type = typeof(T);
if (!type.IsValueType) return true;...
Get local IP address
...output;
}
Now to get the IPv4 address of your Ethernet network interface call:
GetLocalIPv4(NetworkInterfaceType.Ethernet);
Or your Wireless interface:
GetLocalIPv4(NetworkInterfaceType.Wireless80211);
If you try to get an IPv4 address for a wireless interface, but your computer doesn't have...
How to check if a map contains a key in Go?
...t
var ok bool
seconds, ok = timeZone[tz]
For obvious reasons this is called the “comma ok” idiom. In this
example, if tz is present, seconds will be set appropriately and ok
will be true; if not, seconds will be set to zero and ok will be
false. Here's a function that puts it togethe...
What reason is there to use null instead of undefined in JavaScript?
...at undefined is always preferable and serves the same purpose programmatically. What are some practical reasons to use null instead of undefined ?
...
How to determine programmatically whether a particular process is 32-bit or 64-bit
...ervices;
internal static class Program
{
private static void Main()
{
foreach (var p in Process.GetProcesses())
{
try
{
Console.WriteLine(p.ProcessName + " is " + (p.IsWin64Emulator() ? string.Empty ...
Cannot install node modules that require compilation on Windows 7 x64/VS2012
...rror when running a set of scripts that invoked npm deep in the bowels. I didn't want to modify the scripts , so this was the best option for me
– Alastair
May 13 '15 at 6:48
2
...
Inheritance vs. Aggregation [closed]
...nswer with a practical example. I would design the Pet class with a method called makeSound and let each subclass implement their own kind of sound. This will then help in situations where you have many pets and just do for_each pet in the list of pets, pet.makeSound.
– blong...
What is null in Java?
...is null.
How this is used varies. You can use it to enable what is called lazy initialization of fields, where a field would have its initial value of null until it's actually used, where it's replaced by the "real" value (which may be expensive to compute).
There are also other uses. Let's...
ASP.NET MVC Razor render without encoding
...
It does NOT encode quotes. Besides the obvious documentation stating it plain as day ("This method wraps HTML markup using the IHtmlString class, which renders unencoded HTML.") I also tested this and quotes are not encoded.
– James ...