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Getting A File's Mime Type In Java
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In Java 7 you can now just use Files.probeContentType(path).
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How do you find out the caller function in JavaScript?
...ecome obsolete since this post was listed in 2011. The preferred method is now Function.caller, (as of 2015).
– Greg
Jun 13 '15 at 2:52
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builder for HashMap
...ctor, for every constructor in the class. The lifecycle is not very well-known and so I avoid this idiom.
– Joe Coder
May 10 '12 at 0:23
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What does the question mark in Java generics' type parameter mean?
...4.
Update: PDF link was updated since Oracle removed it a while back. It now points to the copy hosted by the Queen Mary University of London's School of Electronic Engineering and Computer Science.
Update 2: Lets go into a bit more detail as to why you'd want to use wildcards.
If you declare a ...
Calling a static method on a generic type parameter
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As of now, you can't. You need a way of telling the compiler that T has that method, and presently, there's no way to do that. (Many are pushing Microsoft to expand what can be specified in a generic constraint, so maybe this wil...
Selecting the last value of a column
...pefully one that is not hard coded), but this is the best I could find for now.
Note that if you use the function in cell like stated earlier, it will update upon reload. Maybe there is a way to hook into onEdit() and force in cell functions to update. I just can't find it in the documentation.
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Cause CMAKE to generate an error
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CMake now has many more message modes that accompany message(), including VERBOSE, DEBUG, and TRACE.
– squareskittles
Oct 5 '19 at 13:05
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How to use filter, map, and reduce in Python 3
...s from the documentation.
Views And Iterators Instead Of Lists
Some well-known APIs no longer return lists:
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map() and filter() return iterators. If you really need a list, a quick fix is e.g. list(map(...)), but a better fix is often to use a list comprehension (especially when the original ...
Representing Monetary Values in Java [closed]
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It can be useful to people arriving here by search engines to know about JodaMoney: http://www.joda.org/joda-money/.
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implements Closeable or implements AutoCloseable
...se() throws Exception {
System.out.println("Closing!");
}
}
Now you can say:
try (MyResource res = new MyResource()) {
// use resource here
}
and JVM will call close() automatically for you.
Closeable is an older interface. For some reason To preserve backward compatibility, l...