padding

Base64 length calculation?

心已入冬 提交于 2019-11-26 15:01:35
After reading the base64 wiki ... I'm trying to figure out how's the formula working : Given a string with length of n , the base64 length will be Which is : 4*Math.Ceiling(((double)s.Length/3))) I already know that base64 length must be %4==0 to allow the decoder know what was the original text length. The max number of padding for a sequence can be = or == . wiki :The number of output bytes per input byte is approximately 4 / 3 (33% overhead) Question: How does the information above settle with the output length ? Each character is used to represent 6 bits ( log2(64) = 6 ). Therefore 4 chars

Android: TextView: Remove spacing and padding on top and bottom

白昼怎懂夜的黑 提交于 2019-11-26 14:58:08
When I have a TextView with a \n in the text,, on the right I have two singleLine TextView s, one below the other with no spacing in between. I have set the following for all three TextView s. android:lineSpacingMultiplier="1" android:lineSpacingExtra="0pt" android:paddingTop="0pt" android:paddingBottom="0pt" The first line of the left TextView lines up perfectly with the top right TextView . The second line of the left TextView is a little higher than the second line of the bottom right TextView . It seems that there is some kind of hidden padding on the top and the bottom of the TextView s.

Python strftime - date without leading 0?

匆匆过客 提交于 2019-11-26 14:56:23
When using Python strftime , is there a way to remove the first 0 of the date if it's before the 10th, ie. so 01 is 1 ? Can't find a % thingy for that? Thanks! Ryan Actually I had the same problem and I realized that, if you add a hyphen between the % and the letter, you can remove the leading zero. For example %Y/%-m/%-d . This only works on Unix (Linux, OS X), not Windows (including Cygwin). On Windows, you would use # , e.g. %Y/%#m/%#d . We can do this sort of thing with the advent of the format method since python2.6: >>> import datetime >>> '{dt.year}/{dt.month}/{dt.day}'.format(dt =

CSS盒子模型中的Padding属性

你。 提交于 2019-11-26 14:45:17
CSS padding 属性 CSS padding 属性定义元素边框与元素内容之间的空白区域,不可见。如果想调整盒子的大小可以调整内容区,内边距,边框。 CSS padding 属性定义元素的内边距。padding 属性接受长度值或百分比值,但不允许使用负值。 有两种方法可以设置盒子内边框的大小,第一种是分别设置四个方向的内边距,第二种是使用简写属性可同时设置多个方向的内边距(要注意设置的顺序) 一、 使用单独属性设置各个方向的内边距 padding-top 上内边距的宽度 padding-left 左内边距的宽度 padding-right 右内边距的宽度 padding-bottom 下内边距的宽度 实例代码 <style> #box1{ padding-top:10px; padding-left:20px; padding-right:30px; padding-bottom:40px; overflow: hidden; width: 100px; height: 150px; border:20px skyblue solid; } </style> <div id="box1"> </div> 表现效果(内边框并不会显现出来) 二、 简写属性 (使用 padding 可以可以同时设置四个边框的样式,规则和 border-width 一样,按照 top-right

Add zero-padding to a string

北战南征 提交于 2019-11-26 14:27:26
How do I add "0" padding to a string so that my string length is always 4? Example If input "1", 3 padding is added = 0001 If input "25", 2 padding is added = 0025 If input "301", 1 padding is added = 0301 If input "4501", 0 padding is added = 4501 You can use PadLeft var newString = Your_String.PadLeft(4, '0'); myInt.ToString("D4"); string strvalue="11".PadRight(4, '0'); output= 1100 string strvalue="301".PadRight(4, '0'); output= 3010 string strvalue="11".PadLeft(4, '0'); output= 0011 string strvalue="301".PadLeft(4, '0'); output= 0301 "1".PadLeft(4, '0'); 来源: https://stackoverflow.com

nuxt jokes页面UI模块结构开发

北战南征 提交于 2019-11-26 14:26:30
nuxt jokes 页面结构开发 在这章节内容呢,我将带着大家使用 bootstarpVue 来开发这个 jokes 查询页面,这章内容呢,主要是编写我们的静态UI结构, 渲染上静态数据;好我们现在来使用 <Banner> 编写这个顶部banner信息栏; 编写如下: < Banner title = " Jokes Page " para = " this is a jokes search page. " img = " /images/banner_jokes.jpg " > </ Banner > 这里需要的图片是需要在刚开始的引入的 static 中引入,路径为 /images/banner_jokes.jpg 接下来,我们继续编写这个搜索表单,1个搜索框,1个limit没有展示数量框,还有1个搜索按钮,我们可以使用 bootstarpVue 中的 一些表单组件来快速实现这个而效果: < div class = " search-box " > < b-input-group prepend = " Search " class = " mt-3 " > < b-form-input placeholder = " please enter joke ' s name " > </ b-form-input > </ b-input-group > < b-input

【CSS属性#2】 -- 2019-08-08 17:58:03

夙愿已清 提交于 2019-11-26 13:49:41
原文: http://106.13.73.98/__/30/ 目录 一、盒子模型 二、外边距 margin 三、内填充 padding 四、浮动 float 五、清除浮动 clear 六、溢出 overflow 七、定位 position 1. 无定位 static 2. 相对定位 relative 3. 绝对定位 absolute 4. 固定 fixed 八、 层叠顺序 z-index 九、透明度 opacit 一、盒子模型 margin :用于控制元素与元素之间的距离;最基本的用途就是控制元素周围空间的间隔,从视觉上达到相互隔开的目的 padding :用于控制内容与边距之间的距离 Border :边框,围绕在内边距和内容外的边框 Content :盒子的内容,显示文本和图像 ![在这里插入图片描述](http://106.13.73.98/media/ai/2019-03/3820234e-236e-4ff2-af57-94cab2575a05.png) 二、外边距 margin 属性 描述 margin-top 上方外边距 margin-right 右方外边距 margin-bottom 下方外边距 margin-left 左方外边距 简写: ![在这里插入图片描述](http://106.13.73.98/media/ai/2019-03/a92c753d-e79f

Is there a GCC keyword to allow structure-reordering?

被刻印的时光 ゝ 提交于 2019-11-26 12:46:22
问题 I know why GCC doesn\'t re-order members of a structure by default, but I seldom write code that relies on the order of the structure, so is there some way I can flag my structures to be automaticly reordered? 回答1: Previous GCC versions have the -fipa-struct-reorg option to allow structure reordering in -fwhole-program + -combine mode. -fipa-struct-reorg Perform structure reorganization optimization, that change C-like structures layout in order to better utilize spatial locality. This

margin padding border

☆樱花仙子☆ 提交于 2019-11-26 12:17:22
Difference between margin and padding? Remember these 3 points: The Margin is the extra space around the control. The Padding is extra space inside the control. The Padding of an outer control is the Margin of an inner control . Demo Image:(where red box is desire control ) When to use margin vs padding in CSS [closed] From https://www.w3schools.com/css/css_boxmodel.asp Explanation of the different parts: Content - The content of the box, where text and images appear Padding - Clears an area around the content. The padding is transparent Border - A border that goes around the padding and

WEB浏览器兼容(转)

白昼怎懂夜的黑 提交于 2019-11-26 11:51:10
这是我总结多年的一个小文档,最近看见有人咨询浏览器兼容的问题,就贡献出来。 并不一定全,有的也可能不准确,比如新出的IE8、Chrome等都没有太多涉及,虽然最近做的一些项目也兼容了IE8、Chrome等,但都没来的及总结进去,后来就忘了...汗。大家一起慢慢完善吧。 javascript部分 1. document.form.item 问题 问题: 代码中存在 document.formName.item("itemName") 这样的语句,不能在FF下运行 解决方法: 改用 document.formName.elements["elementName"] 2. 集合类对象问题 问题: 代码中许多集合类对象取用时使用(),IE能接受,FF不能 解决方法: 改用 [] 作为下标运算,例: document.getElementsByName("inputName")(1) 改为 document.getElementsByName("inputName")[1] 3. window.event 问题: 使用 window.event 无法在FF上运行 解决方法: FF的 event 只能在事件发生的现场使用,此问题暂无法解决。可以把 event 传到函数里变通解决: onMouseMove = "functionName(event)" function functionName