The wildcards do not make a lot of sense when you declare local variables, however they are really important when you declare a parameter for a method. Imagine you have a method: int countLegs ( List< ? extends Animal > animals ) { int retVal = 0; for ( Animal cur : animals ) { … Read more
An unbound type can be useful when your method doesn’t really care about the actual type. A primitive example would be this: public void printStuff(Iterable<?> stuff) { for (Object item : stuff) { System.out.println(item); } } Since PrintStream.println() can handle all reference types (by calling toString()), we don’t care what the actual content of that … Read more
You’re assuming that the problem is with this line: [assembly: AssemblyVersion(“3.0.*”)] when it is actually with this one: [assembly: AssemblyFileVersion(“3.0.*”)] Like the accepted answer to the question that you say is not a duplicate of this one says: For the AssemblyFileVersionAttribute you cannot use the * special character so you have to provide a full … Read more
The easiest way to find a file in a repository is to use the file finder. You can activate it at any time when you are in repository view by pressing t. See this screenshot from the official annoucement: The file finder will perform some fuzzy matching using the characters you input into the “search … Read more
Generics in C# make stronger guarantees than generics in Java. Therefore, to do what you want in C#, you have to let the GeneralPropertyMap<T> class inherit from a non-generic version of that class (or interface). public class GeneralPropertyMap<T> : GeneralPropertyMap { } public class GeneralPropertyMap { // Only you can implement it: internal GeneralPropertyMap() { … Read more
You will need two glob patterns to cover all the potential “dot files”: .[^.]* and ..?*. The first matches all directory entries with two or more characters where the first character is a dot and the second character is not a dot. The second picks up entries with three or more characters that start with … Read more
A filter argument with a trailing * can be evaluated almost instantaneously via an index lookup. A leading * implies a sequential search through the index, so it is O(N). It will take ages. I suggest you reconsider the requirement.
In one of the comments you say: (…) IE is anyway banned on my page, because he doesn’t get it with CSS. It’s an admin tool for developer, so only a few people, and they will anyway use FF I think you should follow a different approach from the beginning, but for what it’s worth, … Read more
The default globbing in bash does not include filenames starting with a . (aka hidden files). You can change that with shopt -s dotglob $ ls -a . .. .a .b .c d e f $ ls * d e f $ shopt -s dotglob $ ls * .a .b .c d e f $ … Read more
Well the explanations are correct, but I think it’d be a nice thing to add the actual working solution as well 😉 List<? extends List<? extends Object>> Will work just fine, but obviously the use of such a collection is quite limited by the usual limitations of generic Collections (but then the same is true … Read more