harmony 鸿蒙@ohos.systemTime (System Time and Time Zone)

2022-08-09
浏览 (584)

@ohos.systemTime (System Time and Time Zone)

The systemTime module provides system time and time zone features. You can use the APIs of this module to set and obtain the system time and time zone.

NOTE

The APIs of this module are deprecated since API version 9. You are advised to use the APIs of the @ohos.systemDateTime (System Time and Time Zone) module.

The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import systemTime from '@ohos.systemTime';

systemTime.setTime^(deprecated)

setTime(time : number, callback : AsyncCallback<void>) : void

Sets the system time. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.SET_TIME

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
time	number	Yes	Timestamp to set, in milliseconds.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or permission denied or system error.

Example

import { BusinessError } from '@ohos.base';

// Set the system time to 2021-01-20 02:36:25.
let time = 1611081385000;
try {
  systemTime.setTime(time, (error: BusinessError) => {
    if (error) {
      console.info(`Failed to setting time. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in setting time`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to set time. message: ${error.message}, code: ${error.code}`);
}

systemTime.setTime^(deprecated)

setTime(time : number) : Promise<void>

Sets the system time. This API uses a promise to return the result.

Required permissions: ohos.permission.SET_TIME

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
time	number	Yes	Timestamp to set, in milliseconds.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or permission denied or system error.

Example

import { BusinessError } from '@ohos.base';

// Set the system time to 2021-01-20 02:36:25.
let time = 1611081385000;
try {
  systemTime.setTime(time).then(() => {
    console.info(`Succeeded in setting time.`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to setting time. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to set time. message: ${error.message}, code: ${error.code}`);
}

systemTime.getCurrentTime^(deprecated)

getCurrentTime(isNano: boolean, callback: AsyncCallback<number>): void

Obtains the time elapsed since the Unix epoch. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
isNano	boolean	Yes	Whether the time to return is in nanoseconds. - true: in nanoseconds. - false: in milliseconds.
callback	AsyncCallback<number>	Yes	Callback used to return the time elapsed since the Unix epoch.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getCurrentTime(true, (error: BusinessError, time: number) => {
    if (error) {
      console.info(`Failed to getting currentTime. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in getting currentTime: ${time}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get currentTime. message: ${error.message}, code: ${error.code}`);
}

systemTime.getCurrentTime^(deprecated)

getCurrentTime(callback: AsyncCallback<number>): void

Obtains the time elapsed since the Unix epoch. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<number>	Yes	Callback used to return the time elapsed since the Unix epoch.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getCurrentTime((error: BusinessError, time: number) => {
    if (error) {
      console.info(`Failed to getting currentTime. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in getting currentTime : ${time}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get currentTime. message: ${error.message}, code: ${error.code}`);
}

systemTime.getCurrentTime^(deprecated)

getCurrentTime(isNano?: boolean): Promise<number>

Obtains the time elapsed since the Unix epoch. This API uses a promise to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
isNano	boolean	No	Whether the time to return is in nanoseconds. The default value is false. Default value: false - true: in nanoseconds. - false: in milliseconds.

Return value

Type	Description
Promise<number>	Promise used to return the time elapsed since the Unix epoch.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getCurrentTime().then((time: number) => {
    console.info(`Succeeded in getting currentTime : ${time}`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to getting currentTime. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get currentTime. message: ${error.message}, code: ${error.code}`);
}

systemTime.getRealActiveTime^(deprecated)

getRealActiveTime(isNano: boolean, callback: AsyncCallback<number>): void

Obtains the time elapsed since system startup, excluding the deep sleep time. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
isNano	boolean	Yes	Whether the time to return is in nanoseconds. - true: in nanoseconds. - false: in milliseconds.
callback	AsyncCallback<number>	Yes	Callback used to return the time.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getRealActiveTime(true, (error: BusinessError, time: number) => {
    if (error) {
      console.info(`Failed to getting real active time. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in getting real active time : ${time}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get real active time. message: ${error.message}, code: ${error.code}`);
}

systemTime.getRealActiveTime^(deprecated)

getRealActiveTime(callback: AsyncCallback<number>): void

Obtains the time elapsed since system startup, excluding the deep sleep time. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<number>	Yes	Callback used to return the time.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getRealActiveTime((error: BusinessError, time: number) => {
    if (error) {
      console.info(`Failed to getting real active time. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in getting real active time : ${time}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get real active time. message: ${error.message}, code: ${error.code}`);
}

systemTime.getRealActiveTime^(deprecated)

getRealActiveTime(isNano?: boolean): Promise<number>

Obtains the time elapsed since system startup, excluding the deep sleep time. This API uses a promise to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
isNano	boolean	No	Whether the time to return is in nanoseconds. The default value is false. Default value: false - true: in nanoseconds. - false: in milliseconds.

Return value

Type	Description
Promise<number>	Promise used to return the time elapsed since system startup, excluding the deep sleep time.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getRealActiveTime().then((time: number) => {
    console.info(`Succeeded in getting real active time : ${time}`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to getting real active time. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get real active time. message: ${error.message}, code: ${error.code}`);
}

systemTime.getRealTime^(deprecated)

getRealTime(isNano: boolean, callback: AsyncCallback<number>): void

Obtains the time elapsed since system startup, including the deep sleep time. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
isNano	boolean	Yes	Whether the time to return is in nanoseconds. - true: in nanoseconds. - false: in milliseconds.
callback	AsyncCallback<number>	Yes	Callback used to return the time.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getRealTime(true, (error: BusinessError, time: number) => {
    if (error) {
      console.info(`Failed to getting real time. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in getting real time : ${time}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get real time. message: ${error.message}, code: ${error.code}`);
}

systemTime.getRealTime^(deprecated)

getRealTime(callback: AsyncCallback<number>): void

Obtains the time elapsed since system startup, including the deep sleep time. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<number>	Yes	Callback used to return the time.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getRealTime((error: BusinessError, time: number) => {
    if (error) {
      console.info(`Failed to getting real time. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in getting real time : ${time}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get real time. message: ${error.message}, code: ${error.code}`);
}

systemTime.getRealTime^(deprecated)

getRealTime(isNano?: boolean): Promise<number>

Obtains the time elapsed since system startup, including the deep sleep time. This API uses a promise to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
isNano	boolean	No	Whether the time to return is in nanoseconds. The default value is false. Default value: false - true: in nanoseconds. - false: in milliseconds.

Return value

Type	Description
Promise<number>	Promise used to return the time elapsed since system startup, including the deep sleep time.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getRealTime().then((time: number) => {
    console.info(`Succeeded in getting real time : ${time}`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to getting real time. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get real time. message: ${error.message}, code: ${error.code}`);
}

systemTime.setDate^(deprecated)

setDate(date: Date, callback: AsyncCallback<void>): void

Sets the system date. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.SET_TIME

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
date	Date	Yes	Target date to set.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or permission denied or system error.

Example

import { BusinessError } from '@ohos.base';

let date = new Date();
try {
  systemTime.setDate(date, (error: BusinessError) => {
    if (error) {
      console.info(`Failed to setting date. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in setting date.`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to set date. message: ${error.message}, code: ${error.code}`);
}

systemTime.setDate^(deprecated)

setDate(date: Date): Promise<void>

Sets the system date. This API uses a promise to return the result.

Required permissions: ohos.permission.SET_TIME

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
date	Date	Yes	Target date to set.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or permission denied or system error.

Example

import { BusinessError } from '@ohos.base';

let date = new Date(); 
try {
  systemTime.setDate(date).then(() => {
    console.info(`Succeeded in setting date.`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to setting date. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to set date. message: ${error.message}, code: ${error.code}`);
}

systemTime.getDate^(deprecated)

getDate(callback: AsyncCallback<Date>): void

Obtains the current system date. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<Date>	Yes	Callback used to return the current system date.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getDate((error: BusinessError, date: Date) => {
    if (error) {
      console.info(`Failed to get date. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in get date : ${date}`);;
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get date. message: ${error.message}, code: ${error.code}`);
}

systemTime.getDate^(deprecated)

getDate(): Promise<Date>

Obtains the current system date. This API uses a promise to return the result.

System capability: SystemCapability.MiscServices.Time

Return value

Type	Description
Promise<Date>	Promise used to return the current system date.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getDate().then((date: Date) => {
    console.info(`Succeeded in getting date : ${date}`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to getting date. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get date. message: ${error.message}, code: ${error.code}`);
}

systemTime.setTimezone^(deprecated)

setTimezone(timezone: string, callback: AsyncCallback<void>): void

Sets the system time zone. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.SET_TIME_ZONE

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
timezone	string	Yes	System time zone to set. For details, see Supported System Time Zones.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or permission denied or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.setTimezone('Asia/Shanghai', (error: BusinessError) => {
    if (error) {
      console.info(`Failed to setting timezone. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in setting timezone.`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to set timezone. message: ${error.message}, code: ${error.code}`);
}

systemTime.setTimezone^(deprecated)

setTimezone(timezone: string): Promise<void>

Sets the system time zone. This API uses a promise to return the result.

Required permissions: ohos.permission.SET_TIME_ZONE

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
timezone	string	Yes	System time zone to set. For details, see Supported System Time Zones.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or permission denied or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.setTimezone('Asia/Shanghai').then(() => {
    console.info(`Succeeded in setting timezone.`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to setting timezone. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to set timezone. message: ${error.message}, code: ${error.code}`);
}

systemTime.getTimezone^(deprecated)

getTimezone(callback: AsyncCallback<string>): void

Obtains the system time zone. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.MiscServices.Time

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<string>	Yes	Callback used to return the system time zone. For details, see Supported System Time Zones.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getTimezone((error: BusinessError, data: string) => {
    if (error) {
      console.info(`Failed to get timezone. message: ${error.message}, code: ${error.code}`);
      return;
    }
    console.info(`Succeeded in get timezone : ${data}`);;
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get timezone. message: ${error.message}, code: ${error.code}`);
}

systemTime.getTimezone^(deprecated)

getTimezone(): Promise<string>

Obtains the system time zone. This API uses a promise to return the result.

System capability: SystemCapability.MiscServices.Time

Return value

Type	Description
Promise<string>	Promise used to return the system time zone. For details, see Supported System Time Zones.

Error codes

For details about the error codes, see Time and Time Zone Service Error Codes.

ID	Error Message
-1	The parameter check failed or system error.

Example

import { BusinessError } from '@ohos.base';

try {
  systemTime.getTimezone().then((data: string) => {
    console.info(`Succeeded in getting timezone: ${data}`);
  }).catch((error: BusinessError) => {
    console.info(`Failed to getting timezone. message: ${error.message}, code: ${error.code}`);
  });
} catch(e) {
  let error = e as BusinessError;
  console.info(`Failed to get timezone. message: ${error.message}, code: ${error.code}`);
}

Supported System Time Zones

The following table lists the supported system time zones and the respective offset (unit: h) between each time zone and time zone 0.

Time Zone	Offset
Antarctica/McMurdo	12
America/Argentina/Buenos_Aires	-3
Australia/Sydney	10
America/Noronha	-2
America/St_Johns	-3
Africa/Kinshasa	1
America/Santiago	-3
Asia/Shanghai	8
Asia/Nicosia	3
Europe/Berlin	2
America/Guayaquil	-5
Europe/Madrid	2
Pacific/Pohnpei	11
America/Godthab	-2
Asia/Jakarta	7
Pacific/Tarawa	12
Asia/Almaty	6
Pacific/Majuro	12
Asia/Ulaanbaatar	8
America/Mexico_City	-5
Asia/Kuala_Lumpur	8
Pacific/Auckland	12
Pacific/Tahiti	-10
Pacific/Port_Moresby	10
Asia/Gaza	3
Europe/Lisbon	1
Europe/Moscow	3
Europe/Kiev	3
Pacific/Wake	12
America/New_York	-4
Asia/Tashkent	5

你可能感兴趣的鸿蒙文章

harmony 鸿蒙APIs

harmony 鸿蒙System Common Events (To Be Deprecated Soon)

harmony 鸿蒙System Common Events

harmony 鸿蒙API Reference Document Description

harmony 鸿蒙Enterprise Device Management Overview (for System Applications Only)

harmony 鸿蒙BundleStatusCallback

harmony 鸿蒙@ohos.bundle.innerBundleManager (innerBundleManager)

harmony 鸿蒙@ohos.distributedBundle (Distributed Bundle Management)

harmony 鸿蒙@ohos.bundle (Bundle)

harmony 鸿蒙@ohos.enterprise.EnterpriseAdminExtensionAbility (EnterpriseAdminExtensionAbility)

0 赞

所属分类： 后端技术
本文标签：
版权声明： 原创文章如转载，请注明本文链接: https://m.seaxiang.com/blog/cfe1c3ce68d84b09854ead0af249c1a3

harmony 鸿蒙@ohos.systemTime (System Time and Time Zone)

@ohos.systemTime (System Time and Time Zone)

Modules to Import

systemTime.setTime^(deprecated)

systemTime.setTime^(deprecated)

systemTime.getCurrentTime^(deprecated)

systemTime.getCurrentTime^(deprecated)

systemTime.getCurrentTime^(deprecated)

systemTime.getRealActiveTime^(deprecated)

systemTime.getRealActiveTime^(deprecated)

systemTime.getRealActiveTime^(deprecated)

systemTime.getRealTime^(deprecated)

systemTime.getRealTime^(deprecated)

systemTime.getRealTime^(deprecated)

systemTime.setDate^(deprecated)

systemTime.setDate^(deprecated)

systemTime.getDate^(deprecated)

systemTime.getDate^(deprecated)

systemTime.setTimezone^(deprecated)

systemTime.setTimezone^(deprecated)

systemTime.getTimezone^(deprecated)

systemTime.getTimezone^(deprecated)

Supported System Time Zones

你可能感兴趣的鸿蒙文章

热门推荐

标签云

最新文章

本文目录

harmony 鸿蒙@ohos.systemTime (System Time and Time Zone)

@ohos.systemTime (System Time and Time Zone)

Modules to Import

systemTime.setTime(deprecated)

systemTime.setTime(deprecated)

systemTime.getCurrentTime(deprecated)

systemTime.getCurrentTime(deprecated)

systemTime.getCurrentTime(deprecated)

systemTime.getRealActiveTime(deprecated)

systemTime.getRealActiveTime(deprecated)

systemTime.getRealActiveTime(deprecated)

systemTime.getRealTime(deprecated)

systemTime.getRealTime(deprecated)

systemTime.getRealTime(deprecated)

systemTime.setDate(deprecated)

systemTime.setDate(deprecated)

systemTime.getDate(deprecated)

systemTime.getDate(deprecated)

systemTime.setTimezone(deprecated)

systemTime.setTimezone(deprecated)

systemTime.getTimezone(deprecated)

systemTime.getTimezone(deprecated)

Supported System Time Zones

你可能感兴趣的鸿蒙文章

热门推荐

标签云

最新文章

本文目录

systemTime.setTime^(deprecated)

systemTime.setTime^(deprecated)

systemTime.getCurrentTime^(deprecated)

systemTime.getCurrentTime^(deprecated)

systemTime.getCurrentTime^(deprecated)

systemTime.getRealActiveTime^(deprecated)

systemTime.getRealActiveTime^(deprecated)

systemTime.getRealActiveTime^(deprecated)

systemTime.getRealTime^(deprecated)

systemTime.getRealTime^(deprecated)

systemTime.getRealTime^(deprecated)

systemTime.setDate^(deprecated)

systemTime.setDate^(deprecated)

systemTime.getDate^(deprecated)

systemTime.getDate^(deprecated)

systemTime.setTimezone^(deprecated)

systemTime.setTimezone^(deprecated)

systemTime.getTimezone^(deprecated)

systemTime.getTimezone^(deprecated)