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Why can't the C# constructor infer type?
... support type inference?
No. When you have
new Foo(bar)
then we could identify all types called Foo in scope regardless of generic arity, and then do overload resolution on each using a modified method type inference algorithm. We'd then have to create a 'betterness' algorithm that determines w...
What's the role of GetHashCode in the IEqualityComparer in .NET?
...ds on the Key objects.
Now to explain why both methods are necessary, consider this example:
BoxEqualityComparer boxEqC = new BoxEqualityComparer();
Dictionary<Box, String> boxes = new Dictionary<Box, string>(boxEqC);
Box redBox = new Box(100, 100, 25);
Box blueBox = new Box(1000, ...
test a file upload using rspec - rails
...argument to post was a path helper method, whose only intended argument I didn't enclose in parentheses, so the following tokens were interpreted as additional args to the helper, rather than args for the post itself. E.g., I had post order_documents_path @order, document: file instead of post order...
How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
... a few tricks to make it work properly with a multiuser system, such as avoiding temporary files and such.
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Bootstrap 3 Navbar with Logo
...our navbar. You can adjust your image via css height attribute (allowing width to scale) or you can just use an appropriately sized image. Whatever you decide to do - the way this looks will depend on how well you size your image.
For some reason, everyone wants to stick the image inside of an an...
How to securely save username/password (local)?
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If you are just going to verify/validate the entered user name and password, use the Rfc2898DerivedBytes class (also known as Password Based Key Derivation Function 2 or PBKDF2). This is more secure than using encryption like Triple DES or AES because there i...
HashMap get/put complexity
...tainly isn't guaranteed - but it's usually what you should assume when considering which algorithms and data structures to use.
In JDK 8, HashMap has been tweaked so that if keys can be compared for ordering, then any densely-populated bucket is implemented as a tree, so that even if there are lots...
AngularJS toggle class using ng-class
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The second example is cleaner, but it's ridiculous that you can't put the variable you're evaluating at the front of the expression... it just reads funny. Imagine looking at the expression as an if statement: "if (variable) true: do this, false: do that... ugh #ful...
Can I have an IF block in DOS batch file?
... operand resolve to IF "value_of_somevar"=="example_string2" to avoid special characters in either string operand causing syntax errors in the IF statement. Values you set should always be done as set "somevar=value_of_somevar" That syntax allows you to escape special characters in ...
How do you create an asynchronous method in C#?
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If you didn't want to use async/await inside your method, but still "decorate" it so as to be able to use the await keyword from outside, TaskCompletionSource.cs:
public static Task<T> RunAsync<T>(Func<T> function)...