position

How to set parent div's height as child div with position: absolute

由 我的未来我决定 提交于 2020-01-23 17:56:06
问题 I have parent div which has no height, there is also nested another child div with position absolute inside it. Child div has 652px of height. But I cannot get the same height in parent div. I tried to play with clear: both, overflow. Here is the code: HTML <div class="content"> <div class="container"> some other elements whose height is 652px... </div> </div> CSS .content { position: relative; } .container { position: absolute; width: 100%; max-width: 1160px; margin: 0 auto; padding: 120px 0

C++ list::splice()函数详解

由 不问归期 提交于 2020-01-23 14:03:55
list::splice实现list拼接的功能。将源list的内容部分或全部元素删除，拼插入到目的list。 函数有以下三种声明： 一：void splice ( iterator position, list<T,Allocator>& x ); 二：void splice ( iterator position, list<T,Allocator>& x, iterator it ); 三：void splice ( iterator position, list<T,Allocator>& x, iterator first, iterator last ); 解释： position 是要操作的list对象的迭代器 list&x 被剪的对象 对于一：会在position后把list&x所有的元素到剪接到要操作的list对象 对于二：只会把it的值剪接到要操作的list对象中 对于三：把first 到 last 剪接到要操作的list对象中 #include<bits/stdc++.h> using namespace std; int main() { list<int>li1,li2; for(int i=1;i<=4;i++) li1.push_back(i),li2.push_back(i+10); // li1 1 2 3 4 // li2 11 12 13 14

Matching position in gsub or scan

由 痴心易碎 提交于 2020-01-23 09:48:33
问题 What is the best way to achieve the matching position (the index that would be returned by =~ ) for each match when using gsub or scan ? 回答1: "hello".gsub(/./) { Regexp.last_match.offset(0).first } => "01234" See Regexp.last_match and MatchData. 回答2: I came to this problem from a different direction, and could not come up with a decent solution (that is, understandable, maintainable) to do this with either gsub or scan (both built-in methods of String class). So I asked "Why do it this way?..

Matching position in gsub or scan

由 痞子三分冷 提交于 2020-01-23 09:47:27
问题 What is the best way to achieve the matching position (the index that would be returned by =~ ) for each match when using gsub or scan ? 回答1: "hello".gsub(/./) { Regexp.last_match.offset(0).first } => "01234" See Regexp.last_match and MatchData. 回答2: I came to this problem from a different direction, and could not come up with a decent solution (that is, understandable, maintainable) to do this with either gsub or scan (both built-in methods of String class). So I asked "Why do it this way?..

How to tell RecyclerView to start at specific item position

由 雨燕双飞 提交于 2020-01-23 06:13:58
问题 I want my RecyclerView with LinearLayoutManager to show up with scroll position at specific item after adapter got updated. (not first/last position) Means the at first (re-)layout, this given position should be in visible area. It should not layout with position 0 on top and scroll afterwards to target position. My Adapter starts with itemCount=0, loads its data in thread and notifies its real count later. But the start position must be set already while count is still 0! As of now I used

【原】移动web页面支持弹性滚动的3个方案

由 时光怂恿深爱的人放手 提交于 2020-01-23 05:35:40
传统 pc 端中，子容器高度超出父容器高度，通常使用 overflow:auto 可出现滚动条拖动显示溢出的内容，而移动web开发中，由于浏览器厂商的系统不同、版本不同，导致有部分机型不支持对弹性滚动，从而在开发中制造了所谓的 BUG。 上图如果在PC端中，我们可以利用 position:fixed 和 overflow:auto 进行简单的布局实现我们需要的效果，而在手机端遇到的问题如下： ios4 和 android2.2 以下不支持 position:fixed ios 和 android2.3 以下 不支持 overflow:auto ios4 和 android 不支持 overflow-scrolling 最严重的结果是：滚动区域内容无法拖动 对于 ios4 和 android2.2 以下不支持 position:fixed 的问题，有2种布局方法可以替代。 布局一： 定义页面整体高度为100%，然后使用 position:absolute 布局可解决 /* <!--absolute布局 [[ --> <body> <div class="wrap"> <div class="header">header</div> <div class="main"> 弹性滚动区域 </div> <div class="footer">footer</div> </div> <

How to change Android SeekBar track start position?

由 心不动则不痛 提交于 2020-01-23 04:53:35
问题 I'd like to set the SeekBars 's track start position so it does not start from the left side of the seekbar, but form an arbitrary position. Here is a photoshop image how it should look like: http://i.imgur.com/QCMEu.png It should be just a graphical effect, the SeekBar 's underlying logic is not changed. I tried to change the Seekbar.getprogressDrawable.SetBounds() to change the track image position, but no luck. 回答1: add this proprety android:progress="2" 回答2: You can set progress of

How to change Android SeekBar track start position?

由 半腔热情 提交于 2020-01-23 04:53:08
问题 I'd like to set the SeekBars 's track start position so it does not start from the left side of the seekbar, but form an arbitrary position. Here is a photoshop image how it should look like: http://i.imgur.com/QCMEu.png It should be just a graphical effect, the SeekBar 's underlying logic is not changed. I tried to change the Seekbar.getprogressDrawable.SetBounds() to change the track image position, but no luck. 回答1: add this proprety android:progress="2" 回答2: You can set progress of

互动编程习作——表现随机行为及牛顿运动学

由 感情迁移 提交于 2020-01-23 04:45:08
第一章 随机游走与概率分布 以上所有素材都取自这里！ 为了实现随机游走，我采用了： rect(0,0,width,height); position.add(velocity); ellipse(mouseX,mouseY,16,16); 生成一个随鼠标移动的球体，并在背景板留下轨迹。 生成一个在不间断运动的球体： if ((position.x > width) || (position.x < 0)) { velocity.x = velocity.x * -1; } if ((position.y > height) || (position.y < 0)) { velocity.y = velocity.y * -1; } 运动规律是按照速度前进，遇到边界则改变速度方向。 为了使运动的物体和鼠标交互，我采用： if ((mouseX > position.x) && velocity.x<=0) { velocity.x = velocity.x * -1; } if ((mouseX < position.x) && velocity.x>=0) { velocity.x = velocity.x * -1; } 让物体根据鼠标的位置移动，向鼠标靠拢。 效果如图： 第二章 Processing中的向量。 我模拟的中心是一个带磁性的球体，无数的小铁球靠近磁体： 引用了两个类

alpha-belta 剪枝实现棋类AI ——Tic-Tac-Toe

由 纵然是瞬间 提交于 2020-01-23 01:25:49
文章目录 定义抽象类 棋子 Piece、棋盘 Board 继承抽象类 AI 算法 minimax alpha-beta 剪枝 基于 ab剪枝 寻找最优策略 来一局! python 版本 3.7 喔！ 定义抽象类 棋子 Piece、棋盘 Board from __future__ import annotations from typing import NewType , List from abc import ABC , abstractmethod Move = NewType ( 'Move' , int ) class Piece : @ property def opposite ( self ) - > Piece : raise NotImplementedError ( "Should be implemented by subclasses." ) class Board ( ABC ) : @ property @abstractmethod def turn ( self ) - > Piece : . . . @abstractmethod def move ( self , location : Move ) - > Board : . . . @ property @abstractmethod def legal_moves ( self ) - >
订阅 position