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Choosing a Java Web Framework now? [closed]
...d no clear winner. Just to cite a few:
JSF: Lots of skeptics about this component based framework, including me so I'm not the best one to talk about it but...
JSF 2 (+ CDI/Weld): JSF skeptics are encouraged (by Gavin King) to "take a second look". Indeed, I think that JSF 2 is a big improvement,...
How do I print the type of a variable in Rust?
...merely wish to find out the type of a variable and are willing to do it at compile time, you can cause an error and get the compiler to pick it up.
For example, set the variable to a type which doesn't work:
let mut my_number: () = 32.90;
// let () = x; would work too
error[E0308]: mismatched ty...
Simple way to transpose columns and rows in SQL?
How do I simply switch columns with rows in SQL?
Is there any simple command to transpose?
9 Answers
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Efficient evaluation of a function at every cell of a NumPy array
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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...here between the specifier and the type. The specifier is how you tell the compiler what the type is but you can use different specifiers to end up at the same type.
Hence long on its own is neither a type nor a modifier as your question posits, it's simply a specifier for the long int type. Ditto ...
Using arrays or std::vectors in C++, what's the performance gap?
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Now the std::vector vs. native C++ arrays (taken from the internet):
// Comparison of assembly code generated for basic indexing, dereferencing,
// and increment operations on vectors and arrays/pointers.
// Assembly code was generated by gcc 4.1.0 invoked with g++ -O3 -S on a
// x86_64-suse...
Why is creating a Thread said to be expensive?
...e platform specific, but they are not cheap on any Java platform I've ever come across.
A Google search found me an old benchmark that reports a thread creation rate of ~4000 per second on a Sun Java 1.4.1 on a 2002 vintage dual processor Xeon running 2002 vintage Linux. A more modern platform w...
When should I use double instead of decimal?
...nt enough to warrant much thought however.
In all cases, if you want to compare two floating-point numbers that should in theory be equivalent (but were arrived at using different calculations), you need to allow a certain degree of tolerance (how much varies, but is typically very small).
For a...
What's the difference between a Future and a Promise?
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According to this discussion, Promise has finally been called CompletableFuture for inclusion in Java 8, and its javadoc explains:
A Future that may be explicitly completed (setting its value and status), and may be used as a CompletionStage, supporting dependent functions and actio...
Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
...ch will use the actual boolean type (and resolve to true and false) if the compiler supports it. (specifically, C++)
However, it would be better to check whether C++ is in use (via the __cplusplus macro) and actually use true and false.
In a C compiler, this is equivalent to 0 and 1.
(note that re...