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    What is the simplest way in C# (.cs file) to get the count from the SQL command SELECT COUNT(*) FROM table_name into an int variable?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    So, I have an admin account to install programs, but with that admin account, I do not have access to a ... asking for the missing access rights, is unfortunately not an option....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    问题描述: sql查询,如果结果集不为空则返回结果集。如果结果集为空,则返回查询参数? 说明如下: SELECT CASE WHEN a IS NULL THEN '${k}' ELSE a END AS a; (SELECT a FROM A...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a class which contains my configuration of a StartDate string, it is a yyyyMMdd hh:mm:ss representation of ... get it to return the current timestamp whenever it is called?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm trying to make a GUI with python and tkinter for a firebird database. When I try to write the input from boxes into the ... (0, END) data.delete(0, END) status.delete(0, END)...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I can't save a Timestamp object in Firebase Firestore using Flutter Web, with Android or iOS it works normally Already ... 164070:16 at http://localhost:62147/dart_sdk.js:163778:11...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have tried searching as much as I can through google as well as figuring out the issue myself, but no matter what I ... ; } Any help with this is greatly appreciated! Thank you!!...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    scheduleJob设置定时任务要求scheduleTime是一个MINUTE类型的标量/向量,我想要每10s读一个文件里的数据,怎么做定时任务....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    问题代码: <el-form-item :label="item.label" label-width="180px" > &nbsp;&nbsp;&nbsp; <el-switch :disabled="item.disabled" ></el-switch> </ ... 原来的130px长度,我有点懵逼了,有前端大佬指导一下吗?更改label的长度....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    好像不用容器包起来也可以正常跑,想问下不用容器有什么不好的地方吗...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    We have certain security requirements in order for our app to go live within our orgainisation. We are using the ... clr enabled'; How to we update these settings? thanks....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    { overflow:hidden; white-space:nowrap; text-overflow: ellipsis; } 使用css将文本超出显示省略号... 图1: 图2: 使用哦scrollWidth可以判断的出来宽来判断的出布尔值 但是图1图 ... 使用js来判断文字length截取,体验不好 实际上dom上的文本也是抓取不到... 省略号...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    <div class="menu-m-content-list-item showChild"> <div class="menu-m-content-list-item-title"> <p>xxxx</p> <img src="../../images/mobile/ ... )';//想给子节点的img一个样式,请问怎么选择这个dom } } }...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I reaslied after sending data to my database that you cannot organised chronologically without the timestamp. I am therefore trying ... "Error writing document: ", error); }) } }...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm currently developing a little algorithm to solve the VRP. I herefore use the HERE Matrix Routing API to identify the ... reveal a little bug? Thanks for your help! BR, Difreg...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Promise怎么理解...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    本人想通过由 Rust 语言 写的事件函数经过编译成 Webassembly 然后给 Vue3 的事件绑定函数使用 Rust 语言使用的包为 wasm-bindgen 编译工具为 wasm-pack 编译命令:$ wasm-pack build --target ... "); 是可以被绑定上, 但我是想使用这个事件参数,不知道怎么解决,希望有解决方案...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    这个是什么问题呢, 这个是我的babelrc配置 这个是我的package.json配置,现在他总是报错React未定义,是因为我安装那个babel-preset-react的原因吗?如果是的话,该怎么处理呢...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Background We are planning to use Angular whatever-version-we're-on-now, Typescript, NGXS. Still in the API ... - description, stateName" where stateName is an additional field....
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    在DolphinDB GUI内执行下面代码: def yoy_continuous_validation(X, threshold, validation_way, continuous_len){ if (not(string(validation_way) in ['>', ... continuous_len,1,0) 直接执行不会报错,是什么原因?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    referenc2= FirebaseDatabase.getInstance().getReference("messageCounter").child("node"); referenc2.addValueEventListener(new ... variable in android studio. can anyone help?...
asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Why is NetBeans with TMC (IDE recommended by MOOC fi Java) telling my that my final if statement is redundant? @Override ... (compared.liNumber)) { return false; } return true; }...
asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    When i click on the reader button opened up asking permission for camera, allowed after that when i click on close button or ... if (mPreview != null) { mPreview.release(); } }...
asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    ### 问题描述 本人用hbuilder上带的插件连接阿里云的代码库。先用命令行是可以的。但是用hbuilder就不行,好像是哪里验证错误。请问应该怎么配置啊,本人git新手,尽量具体点 ### 问题出现的平台版本及自己尝试过哪些方法 ### 相关代码...
asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    需求是: 需要默认显示中间位置。那个框里显示0因为0是中间值,但是那个按钮要在中间显示。 现在如果把默认值设置成50的话。图标是在中间显示了。但是右边也会显示50.但是我要的是右边显示成0 如图:...
asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    比如一下的情况: 用户 a1、a2 中间服务器 b 服务器 c 用户 a1/a2 请求 b 服务器,而 b 从服务器 c 获取数据返回给 a1/a2 这种操作应该就叫反向代理吧,如果是有如下疑问 这种操作和 b 服务器直接请求 c 服务器获取数据后转发给 a1/a2 有什么区别呢?...
asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    First look at my code which is complete here: https://stackblitz.com/edit/test-trainin-2-gv9glh?file=src%2Fapp%2Fapp. ... ="startTimerForSingleTraining(j)" > Go </button> </div>...
asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a data frame, and I'm trying to keep records after 10:05 AM on 1/22/21. df1$`Date/Time Opened` <- ... correctly. (Either all or none of the records are filtered out.)...
asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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