range: lazily evaluated, non-owning, non- mutating  Range factories: construct views to produce values on demand  E.g. sequence of integers  Pipelining: Views can be chained using pipes  |13 Ranges loops (C++20): struct Foo { std::vector values; }; Foo GetData() { return Foo(); } int main() { for (auto data { GetData() }; auto& value : data.values) { // Use 'data' } }56 Non-Type Template …  Standard Library feature test macros  __cpp_lib_concepts  __cpp_lib_ranges  __cpp_lib_scoped_lock  …69 Feature Testing Macros  Example: #if __has_include() #include

作为参数，并且 他保证在无论任意线程中调用的顺序是否 相同，都不会产生死锁问题。 std::lock 的 RAII 版本： std::scoped_lock • 和 std::lock_guard 相对应， std::lock 也 有 RAII 的版本 std::scoped_lock 。只不 过他可以同时对多个 mutex 上锁。 同一个线程重复调用 lock() 也会造成死锁 • 除了两个线程同时持有两个锁会造成死锁

algorithm; e.g., then. then(sender, fn) -> sender22 SHAPE OF A RECEIVER RECEIVER set_value(values... ) set_error(error ) set_done() Operation state notifies receiver by calling one of these sender: connect(sender, receiver) operation_state; concept receiver: set_value(receiver, Values...) void; set_error(receiver, Error) void; set_done(receiver) void; concept operation_state: template struct _then_receiver { R r_; F f_; // Implement set_value(Values...) by invoking the callable and // passing the result to the inner receiver: template

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constraints • Guiding the analysis • Immutable data structures? • Modeling loops?From source to values Stack struct S { int *p; }; int f() { S a[10]; // ... a[1].p = a[3].p; *a[3] MemoryRegion -> Values 5From source to values struct S { int *p; }; int f() { S a[10]; // ... a[1].p = a[3].p; *a[3].p = 5; } AliasSet(a[1].p, a[3].p) AliasMaster -> Values Location

objects from lists in the (global) domain structure. • Read hazard pointer values • Match addresses of retired objects with values read from hazard pointers. • Push matched objects back into the domain lists cohort object list and lock list • Why lock? Concurrent cohort destructors. • Read all hazard pointer values. • Match addresses of extracted objects against hazard pointers. • Reclaim unmatched objects.(under • Pop all objects from domain cohort object list shards and lock shards • Read all hazard pointer values. • Match addresses of extracted objects against hazard pointers. • Don’t reclaim unmatched objects

Support32 Named Universal Character Escapes  Use Unicode assigned names instead of code point values  Examples:  Pre-C++23 // UTF-32 character literal {LATIN CAPITAL LETTER A WITH MACRON} auto interface (similar to std::map)  unique keys (flat_map)  fast retrieval of values based on a key  Keys are sorted  Keys and values are stored in separate sequence containers, e.g. vectors or deques std::flat_map std::flat_multimap45  Defined in  Similar to flat_(multi)map  but only keys  no mapped values std::flat_set / std::flat_multiset46  Example std::flat_map myMap; myMap[2023]

develop/release -> master 环境策略： • 三套环境（ dev 、 qa 、 prod ） 现状：基于 GitLab + Helm Chart 模版 + 多套 values 方 案 一 ： G e r r i t + Z a d i g 方 案 二 ： G i t l a b + Z a d i g 非 核 心 服 务 ： 采 用 单 分 支 模 - 飞书场景二： Gerrit + Zadig 方案 工程师体验 现状 Zadig Helm 方案 管理员 1. 上线服务，每个环境都配置 一份服务 values 文件 2. 创建新环境，准备 所有服务 values 文件 1. 从模板创建服务 -> 修改少量配置更新到所有环境 2. 创建环境，维护与环境相关的少量配置 开发 1. Rancher 手动更新服务 2. 调试更新配置

has a specific start time and end time in the feature table • We will use these start and end date values to draw and clear features on the map • The JSON of the feature layer includes all the necessary current time extent manually or animate the time extent on GeoView - It initializes all required values using data from the layer - You can customize several UI elementsResources • ArcGIS Runtime API

{"pivot_wider": {"names_from": "field1", "values_from": "field2"}} {"pivot_longer": {"select": ["device1", "device2", "device3", "device4"], "names_to": "device", "values_to": "observation" }} {"parse": {"field2":

Have these “simple” types improves type safety as we can make sure we are interpreting these values as the appropriate type.17 Why calendrical types? Abstraction The “simple” calendrical types concepts at all? Couldn’t we just use unsigned int for each? While you could just represent these values with unsigned ints or the underlying data, these new calendrical types also provide valuable