Let's say I have several objects declared locally that I want to iterate over using range-based for syntax. This seems to work well, however, it appears that to put the local objects into the initializer_list, a copy is performed. This is bad news for objects like std::shared_ptr for which (as...
I have a bunch of test vectors, presented in the form of hexadecimal strings:etc. I need to get these into a C++ program somehow, without too much editing required. There are various options:
Consider following code:This works, because compiler can generate proper constructor for me. But if I change struct C to this:
I am hoping someone can give me the technical details of why the following will not compile, and if possible, a work around.
This has been asked before, but I'm curious to see if anything has changed in newer C++ standards. Any current or future standard is acceptable.
When using a braced-init-list containing multiple braced-init-list, what are the rules defined by the standard for B, C, and D?
I am using VS2013 and this is what I'm trying to figure out:The output is:The first call to constructor #1 is fine
While reading about a different topic I came across a weird behaviour, at least to me. This whole thought originated from the special interactions between auto and braces. If you write something like:
I'd like to write a helper function like:It works well for containers:but it fails to deduce initializer_list-s (example):
Consider this snippet:Live on ColiruIf you run it, you can see that the f(int) overload was preferred, even though std::vector has an std::initializer_list constructor (see #8).