offset

How to read the color from an offset of a XAML LinearGradientBrush?

由 匿名 (未验证) 提交于 2019-12-03 02:52:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Given a LinearGradientBrush defined as follows: <LinearGradientBrush x:Key="RedYellowGradient"> <GradientStop Color="Blue" Offset="0.01" /> <GradientStop Color="Purple" Offset="0.25"/> <GradientStop Color="Red" Offset="0.5"/> <GradientStop Color="Orange" Offset="0.75"/> <GradientStop Color="Yellow" Offset="1.0"/> </LinearGradientBrush> What is required to take that definition and determine the color represented by a specific offset, such as 0.13 or 0.82 without rendering anything visible? This would take the form of a function with a

How is Guava Splitter.onPattern(..).split() different from String.split(..)?

由 匿名 (未验证) 提交于 2019-12-03 02:50:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I recently harnessed the power of a look-ahead regular expression to split a String: "abc8".split("(?=\\d)|\\W") If printed to the console this expression returns: [abc, 8] Very pleased with this result, I wanted to transfer this to Guava for further development, which looked like this: Splitter.onPattern("(?=\\d)|\\W").split("abc8") To my surprise the output changed to: [abc] Why? 回答1: You found a bug! System.out.println(s.split("abc82")); // [abc, 8] System.out.println(s.split("abc8")); // [abc] This is the method that Splitter uses to

JQ的offset().top与JS的getBoundingClientRect区别详解，JS获取元素距离视窗顶部可变距离

由 ε祈祈猫儿з 提交于 2019-12-03 02:38:32
壹 ❀ 引 我在 JQ的offset().top与js的offsetTop区别详解 这篇博客中详细分析了JQ方法offset().top与JS属性offsetTop的区别，并得出了一条 offset().top = offsetTop - scrollTop 的结论，不过此结论只适用于监听元素滚动条，而window的滚动条并不满足。那么在滚动window滚动条时如何获取元素距离视窗顶部的距离呢，这就不得说说本文的主角getBoundingClientRect方法。 贰 ❁ 关于getBoundingClientRect() 我们可以先拷贝下面的代码，动手起来跟着操作一遍，印象会深刻，需要引入JQ，这里提供一个 静态资源地址 ，进去搜索JQ直接复制地址引入即可： <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <link rel="stylesheet" href="css/demo.css"> </head>

破解滑块验证码(打码平台)

由 …衆ロ難τιáo~ 提交于 2019-12-03 02:38:22
此处以模拟登录B站为例，链接 >>> https://passport.bilibili.com/login 打码平台用的是 联众打码 >>> https://www.jsdati.com/ 滑块验证码样式如下 步骤： 使用selenium键入账号密码，点击登录 待验证码弹出并加载完毕后，进行全屏截图 人工定位图片的位置，利用图片处理软件测量验证码距离全屏截图上下左右的距离 根据此距离利用图像处理库在全屏截图中截取验证码 重塑验证码的尺寸(和网页中css样式一致)，并交给打码平台 处理打码平台的返回值，并计算出要滑动的距离 用selenium的动作链控制滑动 实现代码如下 # coding:utf-8 import json import time import requests from PIL import Image from selenium import webdriver from selenium . webdriver import ActionChains # 重写联众打码的api def catch ( ) : ''' main() 参数介绍 api_username （API账号） --必须提供 api_password （API账号密码） --必须提供 file_name （需要识别的图片路径） --必须提供 api_post_url （API接口地址） -

TypeError: $(…).offset(…) is undefined

由 匿名 (未验证) 提交于 2019-12-03 02:33:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm getting this error TypeError: $(...).offset(...) is undefined with the arrow pointing to the $. I've looked at the questions that popped up when I typed this error into the title, but I didn't get a solution. Here is my jquery $(document).ready(function () { if(window.location.href.indexOf("#") > -1) { var pieces = window.location.href.split(/[\s_]+/); var section = pieces[pieces.length-1]; var element_to_scroll_to = $('#' + section); var navbar_height = parseInt($('.navbar').css('height').replace('px', '')); animate_scroll(element_to

Offset of pointer to member

由 匿名 (未验证) 提交于 2019-12-03 02:31:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: template<class T, typename U> ptrdiff_t foo(T U::* m) { // return offset } How I can get the offset of the field 'm' in this context? I would prefer to use am compile-time expression. Thanks in advance for any help. Best regards 回答1: Sounds like you're looking for the offsetof() macro. 回答2: @Michael J Thanks for your answer. This wasn't exactly what I was looking for, but it gives me the inspiration to doing that: template<class T, typename U> std::ptrdiff_t member_offset(U T::* member) { return reinterpret_cast<std::ptrdiff_t>( &

Offset of pointer to member

由 匿名 (未验证) 提交于 2019-12-03 02:30:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: template<class T, typename U> ptrdiff_t foo(T U::* m) { // return offset } How I can get the offset of the field 'm' in this context? I would prefer to use am compile-time expression. Thanks in advance for any help. Best regards 回答1: Sounds like you're looking for the offsetof() macro. 回答2: @Michael J Thanks for your answer. This wasn't exactly what I was looking for, but it gives me the inspiration to doing that: template<class T, typename U> std::ptrdiff_t member_offset(U T::* member) { return reinterpret_cast<std::ptrdiff_t>( &

In Kafka how to get the exact offset according producing time

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-03 02:29:17
I need to get the message produced in Kafka hour by hour in a day. Every one hour I will launch a job to consume the message produced 1 hour ago. e.g., if current time is 20:12, I will consume the message between 19:00:00 and 19:59:59. That means I need to get start offset by time 19:00:00 and end offset by time 19:59:59. I used SimpleConsumer.getOffsetsBefore as shown in 「 0.8.0 SimpleConsumer Example 」. The problem is the returning offset does not match the timestamp given as a parameter. e.g. When make timestamp 19:00:00, I get the message produced at time 16:38:00. In Kafka there is

Getting CUDA Thrust to use a CUDA stream of your choice

由 匿名 (未验证) 提交于 2019-12-03 02:29:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Looking at kernel launches within the code of CUDA Thrust, it seems they always use the default stream. Can I make Thrust use a stream of my choice? Am I missing something in the API? 回答1: I want to update the answer provided by talonmies following the release of Thrust 1.8 which introduces the possibility of indicating the CUDA execution stream as thrust::cuda::par.on(stream) see also Thrust Release 1.8.0 . In the following, I'm recasting the example in False dependency issue for the Fermi architecture in terms of CUDA Thrust APIs. #include

Convert timestamps with offset to datetime obj using strptime

由 匿名 (未验证) 提交于 2019-12-03 02:28:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to convert time-stamps of the format "2012-07-24T23:14:29-07:00" to datetime objects in python using strptime method. The problem is with the time offset at the end(-07:00). Without the offset i can successfully do time_str = "2012-07-24T23:14:29" time_obj=datetime.datetime.strptime(time_str,'%Y-%m-%dT%H:%M:%S') But with the offset i tried time_str = "2012-07-24T23:14:29-07:00" time_obj=datetime.datetime.strptime(time_str,'%Y-%m-%dT%H:%M:%S-%z'). But it gives a Value error saying "z" is a bad directive. Any ideas for a work
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