overflow | 易学教程

C: avoiding overflows when working with big numbers

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I've implemented some sorting algorithms (to sort integers) in C, carefully using uint64_t to store anything which has got to do with the data size (thus also counters and stuff), since the algorithms should be tested also with data sets of several giga of integers. The algorithms should be fine, and there should be no problems about the amount of data allocated: data is stored on files, and we only load little chunks per time, everything works fine even when we choke the in-memory buffers to any size. Tests with datasets up to 4 giga ints (thus 16GB of data) work fine (sorting 4Gint took 2228

Why should I use t1 - t0 < 0, not t1 < t0, when using System.nanoTime() in Java

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When I was reading System.nanoTime() API in Java. I found this line: one should use t1 - t0 < 0, not t1 < t0, because of the possibility of numerical overflow. http://docs.oracle.com/javase/7/docs/api/java/lang/System.html#nanoTime() To compare two nanoTime values long t0 = System.nanoTime(); ... long t1 = System.nanoTime(); one should use t1 - t0 < 0, not t1 < t0, because of the possibility of numerical overflow. I want to know why t1 - t0 < 0 is preferable way to prevent overflow. Because I read from some other thread that A < B is more preferable than A - B < 0 . Java Integer compareTo() -

Horizontal scroll css?

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问题 I want to have one <div> with id that has horizontal scroll, but the problem is it has to be responsive, not with fixed width. html, body {margin: 0; padding: 0;} #myWorkContent{ width:530px; height:210px; border: 13px solid #bed5cd; overflow-x: scroll; overflow-y: hidden; white-space: nowrap; } #myWorkContent a { display: inline-block; vertical-align: middle; } #myWorkContent img {border: 0;} <div id="myWorkContent"> <a href="assets/work/1.jpg"><img src="http://placekitten.com/200/200/"

Know what overflow:hidden has hidden

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I want to know if there is any way you can call and use what the overflow:hidden has well hidden. To clarify what I mean, in this example I would like to know that "This is hidden" is the hidden part of the div. Is this even possible? How would you approach it? I've tagged the question jQuery but of course whatever gets the job done is great, pure CSS or Javascript will do just fine. Thanks in advance! Try this: CSS: .text{ outline:1px solid orange; width:100px; height:20px; overflow:hidden; } HTML: <div class="text">This is shown. This is hidden</div> <div id="result"></div> <div id=

CSS: Can you prevent overflow: hidden from cutting-off the last line of text?

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When using CSS overflow: hidden , I've often found that the last line of text gets partially cut-off. Is there a way to prevent this so that any partial lines do not show-up. Almost like a vertical word-wrap. You can use wrapper div and multi-column css: .wrapper { -webkit-column-width: 150px; //You can't use 100% column-width: 150px; height: 100%; } Solution example: http://jsfiddle.net/4Fpq2/9/ Update 2017-09-21 In Firefox this solution still works but broken in Chrome. Recently Chrome started break column by small parts, also stop break content if you set height. In this http://jsfiddle.net

How to ignore parent element's overflow:hidden in css

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I have a div element wrapping other div elements like so: <div style="overflow:hidden"> <div id="a"></div> <div id="b"></div> </div> I have other css rules that manage the dimensions of the outer div. In my actual code, I want to position the div#a exactly 10 px below the outer div. However, I want div#b to still be cut off by the outer div's overflow:hidden. What is the best way to achieve this? Method 1 A good way to do it is by setting the overflowing element to position:fixed (which will make it ignore the parent overflow), and then positioning it relative to the parent using this

测开之路九十五：css进阶之光标和溢出内容处理

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光标样式：cursor 准备文字 css 溢出内容处理：overflow，默认溢出部分是显示先把内容放到盒子里面正常显示不显示溢出内容显示为滚动条自动处理 css /* 光标样式 */p{ /* 默认default */ cursor: default; /*!*pointer：小手、*!*/ /*cursor: pointer;*/ /*!*text、*!*/ /*cursor: text;*/ /*!*移动样式move*!*/ /*cursor: move;*/}/* 溢出内容 */#box{ width: 200px; height: 200px; background-color: blue;}/* 溢出部分 */#box{ /* 自动处理 */ overflow: auto; /*!* 显示为滚动条 *!*/ /*overflow: scroll;*/ /*!* 不显示溢出内容 *!*/ /*overflow: hidden;*/ /*!* 正常显示 *!*/ /*overflow: visible;*/ } html <!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>文字样式</title> <link rel="stylesheet" href="../css/css07

Webkit border-radius and overflow bug when using any animation/transition

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I am having getting a weird bug when I use a combination of overflow , border-radius , and transition . I have a div with an img inside of it. The div has a border radius and overflow set to hidden. When I hover over the img I have a transition that takes place which makes the image larger to create a zooming effect. The problem is that the overflow seems to break on the bottom left and bottom right of the image. I have created a jsfiddle for you to see what I'm talking about. http://jsfiddle.net/dmcgrew/HuMrC/1/ It works fine in Firefox but breaks in Chrome and Safari. Anyone know what might

How can I make text appear on next line instead of overflowing? [duplicate]

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This question already has an answer here: How to word wrap text in HTML? 16 answers I have a fixed width div on my page that contains text. When I enter a long string of letters it overflows. I don't want to hide overflow I want to display the overflow on a new line, see below: <div id="textbox" style="width:400px; height:200px;"> dfssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssfddddddddddddddddddddddsdffffffffffffffffsdffffffffffffffffdfssssssssssssdf </div> Is there anyway to disable overflow and put the overflowing text on a new line??? Twitter does something like

Can overflow text be centered?

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问题 When I specify text-align:center for an element with a width that is greater than the width of the text, the text is centered within the content box of the element (as expected). When I specify text-align:center for an element with a width that is less than the width of the text, the text is aligned to the left edge of the content box and overflows the right edge of the content box. You can see the two cases in action here. Can any CSS magic make the text equally overflow both the left edge