label | 易学教程

How to use placeholders instead of labels in simple_form?

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问题 I want to use placeholders everywhere in my application instead of labels. I am using simple_form and Rails (3.2.14). How can I specify in simple_form config file to use placeholders instead of labels. In Initializers there is a file simple_form.rb ie # Use this setup block to configure all options available in SimpleForm. SimpleForm.setup do |config| # Wrappers are used by the form builder to generate a # complete input. You can remove any component from the # wrapper, change the order or

How to use placeholders instead of labels in simple_form?

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JAVA 表单学习

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<form action="#" method="post" enctype="multipart/form-data"> 用户名：<input type="text" name="username" placeholder="请输入名字" ><br> 密码：<input type="password" name="pwd"><br> 隐藏域：<input type="hidden" name="uid" value="123"><br> <input type="button" value="普通"> <input type="submit" value="上交"> <input type="reset" value="重置"> <br> 性别： <label>男<input type="radio" name="sex" value="man" checked></label> <label>女<input type="radio" name="sex" value="woman"></label> <br> 爱好 <label> 足球<input type="checkbox" name="qiu" value="football" checked disabled></label> <label >篮球<input type="checkbox" name="qiu"

SpringCloud分布式微服务云架构第六篇: 分布式配置中心

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一、简介在分布式系统中，由于服务数量巨多，为了方便服务配置文件统一管理，实时更新，所以需要分布式配置中心组件。在Spring Cloud中，有分布式配置中心组件spring cloud config ，它支持配置服务放在配置服务的内存中（即本地），也支持放在远程Git仓库中。了解springcloud架构可以加求求：三五三六二四七二五九，在spring cloud config 组件中，分两个角色，一是config server，二是config client。二、构建Config Server 父maven工程省略，父pom文件： <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.forezp</groupId> <artifactId>sc-f

Change main plot legend label text

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问题 So far I have been able to label the subplots just fine but I'm having an issue with the main one. Here's the relevant part of my code: data_BS_P = data[channels[0]] data_BS_R = data[channels[1]] data_BS_Y = data[channels[2]] plot_BS_P = data_BS_P.plot() #data_BS_P is a pandas dataframe axBS = plot_BS_P.gca() axBS.plot(data_BS_R, label='Roll') axBS.plot(data_BS_Y, label='Yaw') axBS.set_ylabel('Amplitude (urad)') axBS.legend(loc='upper center', bbox_to_anchor=(0.5, 1.05), ncol=3, fancybox=True

‎Cocos2d-x 学习笔记(20) ControlButton

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【Cocos2d-x 学习笔记目录链接】 1. 简介 ControlButton实现了按钮功能，根据触摸的位置和移动的过程可识别9中EventType类型，执行对应的回调函数。直接继承了Control。拥有9种EventType和4种State。 2. create 按钮的创建需要Label和Scale9Sprite。构造函数： ControlButton::ControlButton() : _isPushed(false) , _parentInited(false) , _doesAdjustBackgroundImage(false) , _currentTitleColor(Color3B::WHITE) , _titleLabel(nullptr) , _backgroundSprite(nullptr) , _zoomOnTouchDown(false) , _marginV(ControlButtonMarginTB) , _marginH(ControlButtonMarginLR) {} 有5种重载的create方法 ControlButton* create(); ControlButton* create(cocos2d::ui::Scale9Sprite* sprite); ControlButton* create(Node* label,

xcode custom ttf font not working

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问题 ok so I've been reading through SO and doing all sorts of googling but I cant figure out why my font isn't working. I think I've done everything right, but when I run the app, the text on my button appears with the standard system font instead of the one I imported. I added NSLog(@"%@",[UIFont familyNames]); to see if it was in the list but it isnt. Which makes me think I've set it up wrong. Im hoping someone can help me display the text in my label in my custom font. Thanks to anyone who

Empty Label ChoiceField Django

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问题 How do you make ChoiceField 's label behave like ModelChoiceField ? Is there a way to set an empty_label , or at least show a blank field? Forms.py: thing = forms.ModelChoiceField(queryset=Thing.objects.all(), empty_label='Label') color = forms.ChoiceField(choices=COLORS) year = forms.ChoiceField(choices=YEAR_CHOICES) I have tried the solutions suggested here: Stack Overflow Q - Setting CHOICES = [('','All')] + CHOICES resulted in an internal server error. Stack Overflow Q2 - After defining (

How do I make a custom axis formatter for hours & minutes in d3.js?

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问题 I've got a dataset I'm graphing with d3.js. The x axis represents time (in minutes). I'd like to display this axis in an hh:mm format, and I can't find a way to do this cleanly within d3. My axis code looks like: svg.append('g') .attr('class', 'x axis') .attr('transform', 'translate(0,' + height + ')') .call(d3.svg.axis() .scale(x) .orient('bottom')); Which generates labels in minutes that looks like [100, 115, 130, 140] , etc. My current solution is to select the text elements after they've

Java带标签的break 和带标签的continue

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最开始没有学习java 学习的是C语言然后工作开始用java，但当时并没有仔细看过java的书籍，也是大致一翻就看跟C语言很像，了解了基本语法就没有深究了，今天看书开始发现之前没有了解过的语法带标签的break ，带标签的continue：　　我最开始了解的break 是switch中的终止，for while do..while这些循环中的终止，我曾经写过循环的3层嵌套，当第三层中需要终止嵌套的所有循环时，break就要一层一层的退出循环，自己写条件判断，恶心了半天还觉得这个代码太多余了现在才发现java中有跳出所有循环的带标签的break; 这个带标签的break是goto这个语法来的，不要问goto是什么，其实goto也是一个用来循环的语句,因为goto可以自由设置跳跃循环的点，导致程序的bug和维护会有很多的问题，结果被诟病没人在项目中使用了，但它有个优点就是可以任意跳出循环跳到标签的位置，带标签的break和带标签的continue就这么应运而生。接下来看看代码: int i =0; int j = 0; label:while(true){ //我是第一层循环 while(true){ //我是第二层循环 if(j*i == 81) break label; // continue label j++; } i++; } label: 就是标签要终止的位置