overflow

How do promotion rules work when the signedness on either side of a binary operator differ? [duplicate]

£可爱£侵袭症+ 提交于 2019-12-17 00:05:53
问题 This question already has answers here : Implicit type conversion rules in C++ operators (9 answers) Closed last year . Consider the following programs: // http://ideone.com/4I0dT #include <limits> #include <iostream> int main() { int max = std::numeric_limits<int>::max(); unsigned int one = 1; unsigned int result = max + one; std::cout << result; } and // http://ideone.com/UBuFZ #include <limits> #include <iostream> int main() { unsigned int us = 42; int neg = -43; int result = us + neg; std

How do promotion rules work when the signedness on either side of a binary operator differ? [duplicate]

假装没事ソ 提交于 2019-12-17 00:05:31
问题 This question already has answers here : Implicit type conversion rules in C++ operators (9 answers) Closed last year . Consider the following programs: // http://ideone.com/4I0dT #include <limits> #include <iostream> int main() { int max = std::numeric_limits<int>::max(); unsigned int one = 1; unsigned int result = max + one; std::cout << result; } and // http://ideone.com/UBuFZ #include <limits> #include <iostream> int main() { unsigned int us = 42; int neg = -43; int result = us + neg; std

CSS text-overflow: ellipsis; not working?

时间秒杀一切 提交于 2019-12-16 20:15:40
问题 I don't know why this simple CSS isn't working... .app a { height: 18px; width: 140px; padding: 0; overflow: hidden; position: relative; margin: 0 5px 0 5px; text-align: center; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; color: #000; } <div class="app"> <a href="">Test Test Test Test Test Test</a> </div> Should cut off around the 4th "Test" 回答1: text-overflow:ellipsis; only works when the following are true: The element's width must be constrained in px (pixels).

CSS text-overflow: ellipsis; not working?

独自空忆成欢 提交于 2019-12-16 20:15:11
问题 I don't know why this simple CSS isn't working... .app a { height: 18px; width: 140px; padding: 0; overflow: hidden; position: relative; margin: 0 5px 0 5px; text-align: center; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; color: #000; } <div class="app"> <a href="">Test Test Test Test Test Test</a> </div> Should cut off around the 4th "Test" 回答1: text-overflow:ellipsis; only works when the following are true: The element's width must be constrained in px (pixels).

How can I check if a scrollbar is visible?

拟墨画扇 提交于 2019-12-16 20:01:59
问题 Is it possible to check the overflow:auto of a div? For example: HTML <div id="my_div" style="width: 100px; height:100px; overflow:auto;" class="my_class"> * content </div> JQUERY $('.my_class').live('hover', function (event) { if (event.type == 'mouseenter') { if( ... if scrollbar visible ? ... ) { alert('true'): } else { alert('false'): } } }); Sometimes is the content short (no scrollbar) and sometimes long (scrollbar visible). 回答1: a little plugin for it. (function($) { $.fn.hasScrollBar

9.06学习笔记

被刻印的时光 ゝ 提交于 2019-12-16 17:57:58
盒模型 从内到外:content < padding < border < margin border(边框) 同时设置四条边: border-width:2px; /* 边框宽度 */ border-style:solid; /* solid(单实线),double(双实线),dashed(虚线),dotted(点线)*/ border-color:white; /* 边框颜色默认和文字颜色保持一致*/ border:2px solid white; /* 组合写法(注意顺序)*/ 四条边分开设置: border-top:2px solid white; border-left:2px solid white; border-right:2px solid white; border-bottom:2px solid white; 宽度组合写法: border-width: 2px; /*四条边*/ border-width: 1px 2px; /*上下1px,左右2px*/ border-width: 1px 2px 3px; /*上1px,左右2px,下3px*/ border-width: 1px 2px 3px 4px; /*上1px,右2px,下3px,左4px*/ outline(轮廓线) 当某个元素获得焦点的时候会出现轮廓线,最典型的就是文本框 outline

移动端滚动穿透

守給你的承諾、 提交于 2019-12-15 05:25:13
闲着没事记录下移动端之前遇到的问题。 问题描述:页面长度超出手机屏幕出现滚动条,此时如果有弹层显示的话,触摸弹层,下面列表继续滑动,这个效果肯定是不对的。 解决办法有两个: 方法一: 当弹层出现的时候给其父元素增加overflow: hidden; 当弹层消失的时候删除其父元素overflow属性或更改为overflow: auto; 代码如下 <template> <div id="app" :class="{ 'hidden': showFlag }"> <div class="Channel"> <div> <button @click="showClick">点击显示弹层</button> </div> <div class="clearfix"> <span class="fl ChannelSpan">频道</span> <span class="fr ChannelLookAll">查看全部</span> </div> <div> <p v-for ="item in list" class="Ptext">{{item}}</p> </div> </div> <div class="dialog" v-show="showFlag"> <span @click="colse">关闭</span> <div class="dialogCenter"> 弹层 </div

RedisTemplate操作命令 - Value

纵饮孤独 提交于 2019-12-14 12:29:35
字符串操作 redis储存的字符串都是以二进制的形式存在! 命令 操作 返回值 set(K key, V value) void set(K key, V value, long timeout, TimeUnit unit) 过期时间,TimeUnit时间格式 void set(K key, V value, Duration timeout) Duration过期时间 void setIfAbsent(K key, V value) 如果不存在则设置【setnx】 Boolean setIfAbsent(K key, V value, long timeout, TimeUnit unit) Boolean setIfAbsent(K key, V value, Duration timeout) Boolean setIfPresent(K key, V value) 如果存在则设置【setex】 Boolean setIfPresent(K key, V value, long timeout, TimeUnit unit) Boolean setIfPresent(K key, V value, Duration timeout) Boolean multiSet(Map<? extends K, ? extends V> map) 设置多个键值对【mset】 void

Python „stack overflow” (104 if statements). Is def(x) the only solution to optimise code?

自闭症网瘾萝莉.ら 提交于 2019-12-14 04:14:46
问题 Today have tried to check files with path directory name. Previously it worked, until I tried to create 104 if/else statements. How to dispose of this overflow error? More specific question: Does def(x) for several checks the only one solution to optimise such cases in Python? import turicreate as turi url = "images/" data = turi.image_analysis.load_images(url) data["moneyType"] = data["path"].apply(lambda path: "ARS_1" if "ARS_1" in path else("ARS_2" if "ARS_2" in path else("ARS_5" if "ARS_5

Increasing height of a div while dynamically loading content (it's height is 100%)

扶醉桌前 提交于 2019-12-14 03:59:59
问题 I have a div(InnerDiv) which contains a grid with paging enabled... After some user actions , data inside that grid will load and we will have a big grid! The problem is when grid's data loads , overflow the div's bottom portion(InnerDiv) and some of those data get's displayed out of the div. my css of body and html like below : html, body { margin: 0; /* get rid of default spacing on the edges */ padding: 0; /* get rid of default spacing on the edges */ border: 0; /* get rid of that 2px