Practical C++17 - Jason Turner
The first of two talks from Jason Turner from Meeting C++ 2017 is now released:
Practical C++17
by Jason Turner
basics
Quick Q: Vector going out of bounds without giving error
Quick A: Welcome to undefined behaviour.
Recently on SO:
Vector going out of bounds without giving error
STL vectors perform bounds checking when the
.at()member function is called, but do not perform any checks on the[]operator.When out of bounds, the
[]operator produces undefined results.
C++17: Initializers for if & switch statements--Marc Gregoire
Small reminder:
C++17: Initializers for if & switch statements
by Marc Gregoire
From the article:
Two small, but very useful C++17 features are initializers for if and switch statements. These can be used to prevent polluting the enclosing scope with variables that should only be scoped to the if and switch statement. The for statement already supports such initializers since the beginning...
Quick Q: Is (4 > y > 1) a valid statement in C++? How do you evaluate it if so?
Quick A: This is not a valid statement.
Recently on SO:
Is (4 > y > 1) a valid statement in C++? How do you evaluate it if so?
The statement (4 > y > 1) is parsed as this:
((4 > y) > 1)The comparison operators < and > evaluate left-to-right.
The 4 > y returns either 0 or 1 depending on if it's true or not.
Then the result is compared to 1.
In this case, since 0 or 1 is never more than 1, the whole statement will always return false.
Strong types for strong interfaces - Jonathan Boccara
A talk on Strong Types from Meeting C++ 2017!
Strong types for strong interfaces
by Jonathan Boccara
C++ Core Check in Visual Studio 2017 15.6 Preview 2--Sergiy Oryekhov
Visual Studio 2017 15.6 Preview 2 includes a set of updates to the C++ Core Guidelines Check extension:
C++ Core Check in Visual Studio 2017 15.6 Preview 2
by Sergiy Oryekhov
From the article:
We added more checks to help with the effort of making code cleaner, more secure and maintainable. This document is a quick overview of the new rules...
An inspiring introduction into Template Meta Programming - Milosz Warzecha
A new talk from Meeting C++ 2017
An inspiring introduction into Template Meta Programming
by Milosz Warzecha
Improve your C++ with Inspirations from other languages - Andreas Reischuck
A new video from Meeting C++ 2017:
Improve your C++ with Inspirations from other languages
by Andreas Reischuck
Lightning Talks Meeting C++ 2017 - Part III
The 3rd and last part of lightning talks at Meeting C++ 2017
function_ref
by Vittorio Romeo
A variant of recursive decent parsing
by Björn Fahller
A quick view into a compiler
by Arvid Gerstmann
Algorithms and Iterators for Multidimensional Arrays
by Cem Bassoy
A short story about configuration file formats
by Andreas Rein
Quick Q: Confused about vectors
Quick A: Do not confuse mathematical concepts with C++ terminology.
Recently on SO:
Confused about vectors
You are getting confused because the mathematical concept of a vector can mean a "collection of data" and that is what you were taught int v[10] was. The actual name for that in C++ (and most other languages) is an "array" not a vector.
The libraries referred to in C++ Primer have a class called "vector" which is an implementation of an array. They are similar, but not the same.
I hope that clears that up a bit. You are probably confused because you were taught that int v[10] is a vector, but it is "not really" in C++. It's an array. Use that term to refer to it. If you ever refer to it as a vector, you will confuse others and yourself.