P1004R2 constexpr vector13 constexpr In Everyday Programming • constexpr has steadily increased in power • It's just code that runs on your machine instead of the user's • Example: lookup tables • Everyone atomic>, atomic> • GH-601 by AdamBucior • (bit_cast, rotating/counting, power-of-2) • Several PRs by barcharcraz • make_shared() For Arrays • GH-309 by AdamBucior, tested by

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return *p; return 42; }Lessons learned • Path-sensitive analysis is powerful, but power comes at a cost • We are actively looking into ways to make analysis more precise • There are a

concept: mutex, latches, barriers, …  Two types:  counting semaphore: models a non-negative resource count  binary semaphore: only has 1 slot, i.e. only has two states: free slot or no free slot (perfect return "Hearts"; case Spades: return "Spades"; } }75 Text Formatting (std::format)  Currently, two ways to format text in C++:  I/O streams  Safe and extensible  Hard to read, hard to localize starts_with("Hello") };  contains() for associative containers: std::map myMap { std::pair {1, "one"s}, {2, "two"s}, {3, "three"s} }; bool result { myMap.contains(2) };  remove(), remove_if(), and unique() for

and local_time conversions It’s possible for a conversion from a local_time to a sys_time to throw two different exceptions: • ambiguous_local_time • Consider a local_time that occurs during a daylight essentially happens twice. • If the local_time to be converted occurs in that period of time, there are two potential sys_times that it could be converted to. • If the choice of earlier or later time isn’t America/Godthab instead of the new name America/Nuuk Unfortunately, there is no easy mapping between these two different classification systems. So, MSVC STL considers all ICU time zones (canonical and non-canonical)

Removed Features  Garbage Collection Support17 Multidimensional Subscript Operator  In the past, two options for accessing multidimensional data:  Function call: data(x, y, z)  Multiple levels of Containers Heterogeneous Erasure  Removed Features  Garbage Collection Support41  Following two named modules are introduced:  import std;  Imports everything from std namespace from  C++ headers | std::views::adjacent_transform<2>(std::multiplies()) }// {2,6,12}79 Changes to Views Library  Two helper types:  views::pairwise = views::adjacent<2>  views::pairwise_transform = views::adjacent_transform<2>

Lessons from eBPF What is K8s Service • It exposes a set of pods via VIP using a load balancer • Two types • ClusterIP provides in-cluster access • NodePort provides out-of-cluster access • Major conntrack/iptables SNAT • Pros • O(1) time complexity in control/data plane • Stably runs for two decades • Support rich scheduling algorithm • Cons • Performance cost caused by conntrack • Some

the .NET Core runtime team. • https://github.com/dotnet/runtimeWhat is interoperability? Enabling two or more disparate entities to work together. Don’t touch it! Glue code? Boiler plate? A nightmare conventions Marshalling Was I supposed to free that? Was I not supposed to free that? Enabling two or more disparate entities to work together.Why interoperability? No language or platform is good

threads (incl. pthread, co-routines). • Channel allows a unidirectional flow of information between two end-points: the Sender and the Receiver. • Channel Type: SPSC, SPMC, MPMC, MPSC. Senders Receive

my business? ➔How to attract more parties to run steady and persistent nodes for this platform? Two Major Problems ➔ End user drives, no security (or token fund) drives. ➔ Network is like a living