atoi and itoa conversions in C++11 -- FangLu

By Blog Staff | Sep 3, 2014 02:43 PM | Tags: basics

All your friends know about C++11's new stoi and to_string, right? If not, here's a quick refresher to share:

atoi and itoa conversions in C++11

by FangLu

The key reminder from the article:

... The atoi and itoa conversions in C are not very satisfying to programmers, because programmers need to deal with invalid input and exceptions to avoid worst case. On the other hand, these functions are straightforward and easy to use. So they are not rare in C++ code...

In C++11, global functions, such as std::to_string, std::stoi/stol/stoll are introduced to implement atoi/itoa conversions conveniently. For example:

string s;

s += to_string(12) + " is int, ";

s += to_string(3.14f) + " is float.";

cout << s << endl;

where to_string can do type conversion according to the parameter type.

Here is another example:

string s("12");

int i = stoi(s);

cout << i << endl;

Fun with Lambdas: C++14 Style (Part 3) -- Sumant Tambe

By Blog Staff | Sep 3, 2014 02:32 PM | Tags: c++14 advanced

More rapid-fire "now write this using lambdas" problem-solution drill with Sumant Tambe:

Fun with Lambdas: C++14 Style (Part 3)

by Sumant Tambe

From the article:

Now that we have C++14, it has opened up doors for truly mind-bending uses of lambdas--more specifically--generic lambdas. This blog post is the third installment in the series of "Fun with Lambdas: C++14 Style". Check out part 1 and part 2 if you have not already.

This post is about "monadic tuples"...

CppCon: Call for Lightning Talks, Take 2 -- Boris Kolpackov

By Blog Staff | Sep 1, 2014 02:13 PM | Tags: None

CppCon minus one week:

Call for Lightning Talks, Take 2

by Boris Kolpackov

From the announcement:

As part of getting ready to come to CppCon 2014, please consider presenting a Lightning Talk. All attendees (as well as anyone nearby who is taking advantage of the free evening content without registering) are eligible to present a 5 or 15 minute session on Tuesday evening. While the first Call for Lightning Talks has more details on what we’re looking for, we’re open to talks from new speakers, from experienced speakers, from those who work mainly in another language and are visiting C++, from those who work in C++ all the time -- everyone! If there’s one tool you just love using, one technique or best practice you’d like to share with others, or one thing you think is pretty darn funny, please see if you can make it into a 5 or 15 minute talk and share it Tuesday evening. There will be a projector and there will be an audience so why not “give it a go” and see what happens?

We’ll be selecting the 8 sessions on Monday, Day 1 of the conference. Just email [email protected] and tell us what you want to talk about, what length you need and a little bit about yourself -- one sentence is fine. Your topic should be relevant to CppCon attendees but doesn’t need to be about C++ -- we’d love to see “Why C++ developers should also know [language]” for example. Even if you don’t plan to submit, plan to attend, it’s sure to be fun!
 

C++ User Group Meetings in September

By Meeting C++ | Sep 1, 2014 01:46 AM | Tags: user groups community

This time for September - the monthly overview on C++ User Group Meetings:

C++ User Group Meetings in September

by Jens Weller

From the article:

The monthly overview over the upcoming C++ User Group Meetings. This time a few new user groups meet, and as summer comes to an end more meetings might get scheduled in the next days. But due to me going to CppCon, I have to post this a bit earlier then usual.

The list of upcoming meetings:

    3.9 C++ UG London - Cross Platform Games: iOS to Android
    10.9 C++ UG San Francisco/ Bay area - Presentation and Q&A
    11.9 C++ UG Dresden
    15.9 C++ UG NRW/Dortmund
    17.9 C++ UG Düsseldorf - Treffen der C++ User Gruppe NRW
    17.9 C++ UG Hamburg - Praktische Übersicht über Valgrind
    17.9 C++ UG Seattle/northwest - Parallelism in the Standard C++: What to Expect in C++ 17
    20.9 C++ UG Pune, India - C++ and Boost Pune first meetup
    23.9 C++ UG Chicago - See you in September
    24.9 C++ UG San Francisco/ Bay area - Workshop and Discussion Group
    25.9 C++ UG Rhein-Neckar - September Meeting
    25.9 C++ UG London
    26.9 C++ UG Istanbul
    2.10 C++ UG Paris - C++ & Python

CppCon Regular Registration Deadline Reminder

By Blog Staff | Aug 27, 2014 10:08 AM | Tags: None

Just a reminder: CppCon is less than two weeks away. If you are thinking of coming but haven't registered yet, remember that the Regular Registration rate expires in four days (on August 31). After that, tickets will still be available at the Late/On-site Registration rate.

Note: The Student Registration rate remains the same.

C++ conferences this fall

By Meeting C++ | Aug 27, 2014 02:04 AM | Tags: intermediate conference community basics advanced

Like last year, I've put up a list of the C++ conference which will happen this fall:

C++ Conferences in Fall 2014

by Jens Weller

From the article:

Like last year, I'd like to give an overview over the C++ Conferences happening this fall. As the holiday season comes to an end, it might be time to plan your trip to one of these conferences...

Journey to the Alps: Participating in the C++ Standardization Process

By nwilson | Aug 26, 2014 11:44 AM | Tags: basics

Recently on the Spot blog:

Trip Report: Journey to the Alps -- Participating in the C++ Standardization Process

by Nathan Wilson

From the article:

... At Spot Trading, we currently utilize many of the C++11 features -- lambdas, keyword auto, nullptr, move operations, constexpr, range based for loops, explicit overrides, atomic operations, threading, futures, and new pointer types. Bjarne Stroustrup has said that we want to be able to continue to make simple things simple. These features of the language, mentioned above, certainly do that...

Demystifying C++ lambdas -- Feabhas

By Blog Staff | Aug 25, 2014 11:02 AM | Tags: None

In case you missed it:

Demystifying C++ lambdas

by Feabhas

From the article:

Lambdas are one of the new features added to C++ and seem to cause considerable consternation amongst many programmers. In this article we’ll have a look at the syntax and underlying implementation of lambdas to try and put them into some sort of context.

C++14 Is Out! -- Jose Daniel García

By Blog Staff | Aug 25, 2014 09:36 AM | Tags: None

A view from our primary ISO representative from Spain, commenting on C++14's approval one week ago and providing a nice set of highlights showing what's new.

C++14 Is Out!

Jose Daniel García 

From the article:

After the long process that took a decade to produce C++11, the standards committee tried to define a more streamlined process to deliver updates and new versions of the C++ language and its standard library more frequently. The first target was to produce a new version for 2014. Now we can say that we have achieved the milestone.

... So, what’s new in C++14? In the language itself you will find a bunch of new/improved features. If you ask which is the most relevant new feature, the most common answer you may get is “generic lambdas”...

Trip Report: Red Hat at the ISO C++ Standards Meeting (June 2014)

By Blog Staff | Aug 22, 2014 10:50 AM | Tags: None

As we celebrate the approval of C++14 this week, another trip report from the recent ISO C++ meeting:

Red Hat at the ISO C++ Standards Meeting (June 2014): Core and Library

Red Hat at the ISO C++ Standards Meeting (June 2014): Parallelism and Concurrency

From the articles:

Recently Red Hat sent several representatives to the JTC1/SC22/WG21 C++ Standards Committee meetings, which were held in June 2014 at the University of Applied Sciences in Rapperswil, Switzerland...