validation | 易学教程

Excel 2010 Data Validation allow specific layout

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问题 I want to apply data validation to reference numbers, to force the following layout (ideally uppercase only): XX_NNX-XX_NNN_NN-XXX X = Numbers N = Letters Ex: 12_AB1-23_ABC_AB-123 The following custom formula allows all of it except for numbers - is there any workaround for this? I don't want to use * since it allows for more characters than I want. =COUNTIF(A1,"??_???-??_???_??-???") 回答1: You can choose AND to add a condition to the function you have already written. e.g. following shall

Is it possible in Angular reactive forms to validate on conditions out of the form?

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问题 I'm working on Angular reactive forms validation. I have an input with google autocomplete implemented on it: <input autocorrect="off" autocapitalize="off" spellcheck="off" type="text" class="input-auto input" formControlName="address"> It is standard implementation, everytime you enter some keyword, you get places suggestions: Now, what I would like to do is to validate the address. The address needs to contain zip code - only then should be valid . So once you type something and choose one

bash for loop to check if directory exists

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问题 The following program is just for fun, I am trying to get into bash scripting. I am not going to use the script for doing backups. I am trying to create a for loop to check if user input (directories that will be backed up) in an array are valid. If input is valid, it should be used. If not, it should be overwritten with a default value /home/$USER . echo "Please enter absolute path of directory for backup. Default is "/home/$USER echo "You can choose multiple directories. Press CTRL-D to

validator 自动化校验

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温馨提示请收藏再看。此文篇幅太长，你短时间看不完；此文干货太多，错过太可惜。示例代码可以关注逸飞兮（公众号）回复 jy 获取。收获讲解详细：能让你掌握使用 hibernate-validator 及类似校验工具的各种使用姿势内容全面：可以当做知识字典来查询 what 注意：hibernate-validator 与持久层框架 hibernate 没有什么关系，hibernate-validator 是 hibernate 组织下的一个开源项目。 hibernate-validator 是 JSR 380（Bean Validation 2.0）、 JSR 303（Bean Validation 1.0）规范的实现。 JSR 380 - Bean Validation 2.0 定义了一个实体和方法验证的元数据模型和 API。 JavaEE（改名为：Jakarta EE）中制定了 validation 规范，即：javax.validation-api（现为 jakarta.validation-api，jar 包的名字改变，包里面的包名、类名未变，因此使用方式不变）包， spring-boot-starter-web 、 spring-boot-starter-webflux 包都已引入此依赖，直接使用即可。有点类似于 slf4j 与 logback

SpringMVC 的 Validation 校验

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1、maven配置文件引入架包：  <dependency> ... </dependency>  <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>5.1.3.Final</version> </dependency> 2、常用Bean对象的注释 @NotBlank 不为空或空字符串 @NotNull 不为空 @Size(min, max) 字符串长度 @Email 邮箱格式 @Pattern(regexp) 正则表达式匹配注释用法： public class LoginParam { private String user; private String password; @NotBlank(message = "用户不能为空") @Size(min = 5, max = 20, message = "用户长度范围为5-20个字符") public String getUser() { return user; } public void setUser(String user) { this.user =

“${#fields.hasErrors('*')}” always false - Redirect Problem

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问题 My controller looks like this: @PostMapping("/event/{id}") public String save(@PathVariable("id") long id, @Valid Form form, BindingResult bindingResult ) { if (!bindingResult.hasErrors()) { //No errors //No return } return "redirect:/event/{id}"; } My @GetMapping is: @GetMapping("/event/{id}") public ModelAndView eventDetail(@PathVariable("id") long id) { ModelAndView model = new ModelAndView("event/details"); Event event = eventoRepository.findById(id).get(); model.addObject("event", evento

train,validation, test split model in CARET in R

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问题 I would like to ask for help please. I use this code to run the XGboost model in the Caret package. However, I want to use the validation split based on time. I want 60% training, 20% validation ,20% testing. I already split the data, but I do know how to deal with the validation data if it is not cross-validation. Thank you, xgb_trainControl = trainControl( method = "cv", number = 5, returnData = FALSE ) xgb_grid <- expand.grid(nrounds = 1000, eta = 0.01, max_depth = 8, gamma = 1, colsample

train,validation, test split model in CARET in R

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display form array on selection of dropdwon in angular

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问题 I have a form with following fields: name (textbox), category(dropdown). I want to display a formarray textbox with an add option on selection of dropdwon="3". When i click "add new textfields", new textboxes should be added. Right now i'm showing a textbox (listitem) after selection of dropdown="3". and then on addnewtextfield i'm calling a formarray. Please help me acheive the functionality. Thanks in advance. Updated code in Stackblitz: https://stackblitz.com/edit/angular-ivy-js8tfp?file

display form array on selection of dropdwon in angular

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