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/ohos5.0/docs/zh-cn/application-dev/quick-start/
H A Darkts-new-once.md1 # \@Once：初始化同步一次
19 - \@Once不影响\@Param的观测能力，仅针对数据源的变化做拦截。
20 - \@Once与\@Param装饰变量的先后顺序不影响实际功能。
21 - \@Once与\@Param搭配使用时，可以在本地修改\@Param变量的值。
25 \@Once装饰器作为辅助装饰器，本身没有对装饰类型的要求以及对变量的观察能力。
41 @Once onceStr: string = "Once"; // 错误用法，@Once无法单独使用
42 @Local @Once onceLocal: string = "onceLocal"; // 错误用法，@Once不能与@Local一起使用
50 - \@Once与\@Param的先后顺序无关，可以写成\@Param \@Once也可以写成\@Once \@Param。
55 @Param @Once param1: number;
56 @Once @Param param2: number;
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H A Darkts-custom-component-mixed-scenarios.md46 | 组件内装饰器 | \@Local、\@Param、\@Provider、\@Consumer、\@Once、\@Event、\@Monitor、\@Computed |
73 // @Once @Require都是@Param的能力扩展装饰器，必须和@Param一起连用
180 ### 多个装饰器不允许装饰同一个变量（\@Watch、\@Once、\@Require除外）
221 除了\@Watch、\@Once、\@Require这些能力扩展装饰器可以配合其他装饰器使用外，其他装饰器不允许装饰同一个变量。
484 …@Param @Once message: string = "hello"; // 可以观测到变化，同步回父组件依赖@Event，使用了@Once可以修改@Param…
485 @Param @Once undefineVal: string | undefined = undefined; // 使用了@Once可以修改@Param装饰的变量
577 @Param @Once message: string = "hello";
578 @Param @Once undefineVal: string | undefined = undefined; // 使用了@Once可以修改@Param装饰的变量
H A Darkts-state-management-overview.md189 …nentV2.md)：使用\@ComponentV2装饰的struct中能使用新的装饰器。例如：\@Local、\@Param、\@Event、\@Once、\@Monitor、\@Provide…
195 - [\@Once](arkts-new-once.md)：\@Once装饰的变量仅初始化时同步一次，需要与\@Param一起使用。
214 | \@State | 无外部初始化：@Local<br/>外部初始化一次：\@Param\@Once | \@State和\@Local类似都是数据源的概念，区别是\@State可以外部…
/ohos5.0/docs/en/application-dev/quick-start/
H A Darkts-new-once.md1 # \@Once: Implementing Initialization Once
41 @Param @Once onceParam: string = "onceParam"; // Correct usage.
42 @Once onceStr: string = "Once"; // Incorrect usage. @Once cannot be used independently.
43 …@Local @Once onceLocal: string = "onceLocal"; // Incorrect usage. @Once cannot be used with @Local.
51 - The order of \@Once and \@Param does not matter. Both \@Param \@Once and \@Once \@Param are corre…
56 @Param @Once param1: number;
57 @Once @Param param2: number;
63 ### Initializing Variables Only Once
70 @Param @Once onceParam: string = '';
108 @Param @Once onceParamNum: number = 0;
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/ohos5.0/commonlibrary/rust/ylong_runtime/ylong_runtime/src/signal/unix/
H A Dregistry.rs20 use std::sync::Once;
31 once: Once,
41 once: Once::new(), in default()
100 static REGISTRY_ONCE: Once = Once::new(); in get_instance()
H A Ddriver.rs73 static ONCE: std::sync::Once = std::sync::Once::new(); in initialize()
/ohos5.0/commonlibrary/rust/ylong_runtime/ylong_signal/src/
H A Dsig_map.rs16 use std::sync::Once;
34 static ONCE: Once = Once::new(); in get_instance()
/ohos5.0/commonlibrary/rust/ylong_http/ylong_http_client/src/util/c_openssl/
H A Dmod.rs32 use std::sync::Once;
66 static SSL_INIT: Once = Once::new(); in ssl_init()
/ohos5.0/commonlibrary/rust/ylong_runtime/ylong_runtime/src/signal/windows/
H A Dregistry.rs15 use std::sync::Once;
47 static REGISTRY_ONCE: Once = Once::new(); in get_instance()
H A Dmod.rs20 use std::sync::Once;
131 static SIGNAL_ONCE: Once = Once::new(); in init_signal()
/ohos5.0/foundation/multimodalinput/input/service/rust/src/
H A Dlib.rs19 use std::sync::Once;
107 static ONCE: Once = Once::new(); in get_instance()
177 static ONCE: Once = Once::new(); in get_instance()
247 static ONCE: Once = Once::new(); in get_instance()
317 static ONCE: Once = Once::new(); in get_instance()
387 static ONCE: Once = Once::new(); in get_instance()
457 static ONCE: Once = Once::new(); in get_instance()
527 static ONCE: Once = Once::new(); in get_instance()
552 static ONCE: Once = Once::new(); in get_instance()
/ohos5.0/base/request/request/services/src/manage/
H A Dapp_state.rs15 use std::sync::Once;
27 static ONCE: Once = Once::new();
H A Dnetwork_manager.rs17 use std::sync::{Mutex, Once};
32 static ONCE: Once = Once::new(); in get_instance()
H A Daccount.rs15 use std::sync::{Mutex, Once};
131 static ONCE: Once = Once::new(); in registry_account_subscribe()
/ohos5.0/commonlibrary/rust/ylong_runtime/ylong_runtime/src/process/sys/unix/
H A Dzombie_manager.rs16 use std::sync::{Mutex, MutexGuard, Once};
31 static ONCE: Once = Once::new(); in get_instance()
/ohos5.0/base/msdp/device_status/rust/services/sys/src/
H A Dservice.rs23 use std::sync::{ Mutex, Once };
70 static INIT_ONCE: Once = Once::new(); in get_instance()
/ohos5.0/commonlibrary/rust/ylong_runtime/ylong_runtime/src/executor/
H A Dmod.rs23 use std::sync::Once;
99 static ONCE: Once = Once::new(); in global_default_async()
131 static ONCE: Once = Once::new(); in global_default_blocking()
/ohos5.0/foundation/systemabilitymgr/safwk/interfaces/innerkits/safwk/rust/tests/
H A Dbasic.rs16 use std::sync::Once;
24 static ONCE: Once = Once::new(); in init()
/ohos5.0/commonlibrary/rust/ylong_runtime/ylong_io/src/sys/windows/
H A Dnet.rs16 use std::sync::{Arc, Mutex, Once};
24 static INIT: Once = Once::new(); in init()
/ohos5.0/foundation/systemabilitymgr/safwk/interfaces/innerkits/safwk/rust/examples/audio_rust_sa/src/
H A Dlib.rs24 use std::sync::{Arc, Mutex, Once, RwLock};
109 static ONCE: Once = Once::new(); in on_idle()
/ohos5.0/base/notification/eventhandler/frameworks/cj/src/
H A Demitter.h45 static int32_t Once(uint32_t eventId, CallbackImpl *callback);
47 static int32_t Once(char* eventId, CallbackImpl *callback);
H A Demitter_ffi.cpp62 return Emitter::Once(eventId, callback); in CJ_OnceWithId()
71 return Emitter::Once(eventId, callback); in CJ_OnceWithStringId()
/ohos5.0/base/request/request/services/src/
H A Dlib.rs73 static ONCE: std::sync::Once = std::sync::Once::new(); in test_init()
/ohos5.0/commonlibrary/rust/ylong_runtime/ylong_signal/tests/
H A Dsignal.rs18 use std::sync::{Arc, Once};
195 static ONCE: Once = Once::new(); in get_instance()
/ohos5.0/base/msdp/device_status/rust/frameworks/client/src/
H A Dframeworks.rs21 use std::sync::{ Mutex, Once };
206 static INIT_ONCE: Once = Once::new(); in get_instance()

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