客户获得收据的describe, rationale, basic flow, alternative flow, precondition, post-condition
时间: 2023-06-26 18:09:59 浏览: 47
Describe:
客户获得收据描述了客户在购买商品或服务后,如何获取相应的收据以便核对订单和付款信息。
Rationale:
此功能的目的是为了提供客户与商家之间的交易保障,确保每个订单都能得到正确的记录和支付。
Basic Flow:
1. 客户完成购物或服务付款。
2. 系统生成收据。
3. 收据显示在客户账户上。
4. 客户可以打印或保存收据。
Alternative Flow:
1. 如果系统无法生成收据,则显示错误信息并提示客户联系客服。
2. 如果客户无法访问其账户,则系统可以将收据以电子邮件或短信的形式发送给客户。
3. 如果客户发现收据有误,则可以与商家联系进行更正。
Precondition:
客户必须完成购买或服务付款。
Post-condition:
客户可以访问和保存其收据以备核对订单和付款信息。
相关问题
git describe --dirty --always --tags
git describe --dirty --always --tags是一个Git命令,用于获取当前git库的最近的标签信息。它将输出最近的标签名称,以及当前提交相对于该标签的提交数和SHA-1哈希值。如果当前的工作树与标签不完全匹配,则该命令将添加"--dirty"后缀以表示修改的文件。如果没有任何标签,则输出只有SHA-1哈希值。
举个例子,假设最近的标签为v1.0.0,当前的提交ID是a1b2c3d,有一些未提交的修改,则git describe --dirty --always --tags输出的结果为:v1.0.0-1-ga1b2c3d-dirty。
--dirty:表示当前工作树中有未提交的修改
--always:即使没有标签也输出信息
--tags:只从tag中寻找最近的一个描述
describe fetch-decode-execute cycle for LDR instruction
The LDR instruction in a computer's architecture is used to load data from memory into a register. The fetch-decode-execute cycle is a three-step process that is used to execute instructions in a computer system.
1. Fetch: The first step is the fetch stage, where the instruction is fetched from memory into the instruction register (IR). In the case of an LDR instruction, the instruction will be loaded from memory into the IR.
2. Decode: In the decode stage, the instruction is decoded to determine the type of operation that needs to be performed. In the case of an LDR instruction, the processor will decode the instruction and determine that it is a load operation.
3. Execute: In the execute stage, the operation specified by the instruction is performed. In the case of an LDR instruction, the processor will execute the instruction and load the specified data from memory into the specified register.
Overall, the fetch-decode-execute cycle for an LDR instruction involves fetching the instruction from memory, decoding it to determine that it is a load operation, and then executing the instruction to load the specified data from memory into the specified register.