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Why do I need to override the equals and hashCode methods in Java?
...), which will prevent your class from functioning properly in conjunction with all hash-based collections, including HashMap, HashSet, and Hashtable.
Let's try to understand it with an example of what would happen if we override equals() without overriding hashCode() and attempt to use a Map.
Say w...
How to split a dos path into its components in Python
...
I've been bitten loads of times by people writing their own path fiddling functions and getting it wrong. Spaces, slashes, backslashes, colons -- the possibilities for confusion are not endless, but mistakes are easily made anyway. So I...
How to generate and validate a software license key?
...t'll be available for downloading and installing for free but in a very limited version. To get access to all the features the user has to pay a license fee and receive a key. That key will then be entered into the application to "unlock" the full version.
...
Operator Overloading with C# Extension Methods
...e feature is being discussed for some future release of C#. Mads talked a bit more about implementing it in this video from 2017.
On why it isn't currently implemented, Mads Torgersen, C# Language PM says:
...for the Orcas release we decided to
take the cautious approach and add
only regular extens...
How do I get an animated gif to work in WPF?
...(above by Dario) to work properly. The result was weird, choppy animation with weird artifacts.
Best solution I have found so far:
https://github.com/XamlAnimatedGif/WpfAnimatedGif
You can install it with NuGet
PM> Install-Package WpfAnimatedGif
and to use it, at a new namespace to the Window ...
Difference between natural join and inner join
...follow
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edited Sep 1 '19 at 9:11
answered Jan 1 '12 at 23:51
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How do I make my GUI behave well when Windows font scaling is greater than 100%
...inst assuming DPI-awareness is easy.
I generally avoid DPI-aware scaling with TForm.Scaled = True. DPI awareness is only important to me when it becomes important to customers who call me and are willing to pay for it. The technical reason behind that point of view is that DPI-awareness or not, y...
How can I override the OnBeforeUnload dialog and replace it with my own?
... the default dialogue for onbeforeunload, so your best bet may be to work with it.
window.onbeforeunload = function() {
return 'You have unsaved changes!';
}
Here's a reference to this from Microsoft:
When a string is assigned to the returnValue property of window.event, a dialog box appe...
How to perform runtime type checking in Dart?
...ss Foo { }
main() {
var foo = new Foo();
if (foo is Foo) {
print("it's a foo!");
}
}
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Unicode characters in URLs
...ing. Modern browsers will take care of display & paste issues and make it human-readable. E. g. http://ko.wikipedia.org/wiki/위키백과:대문
Edit: when you copy such an url in Firefox, the clipboard will hold the percent-encoded form (which is usually a good thing), but if you copy only a p...