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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 a Python newbie (2 weeks) and I'm having trouble formatting a datetime.timedelta object. Here's what I'm trying to do: I have a list of objects and one of the members of the class of the object is a timedelta object that shows the duration of an event. I would like to display that duration in the format of hours:minutes. I have tried a variety of methods for doing this and I'm having difficulty. My current approach is to add methods to the class for my objects that return hours and minutes. I can get the hours by dividing the timedelta

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 playing around with Three.js and WebGL and can't quite get the controls the way I want. I chose to try to "roll my own" controls since Three.js's FirstPersonControls do not use pointer lock. Anyway, I took most of my code from the built-in FirstPersonControls, converted it to use pointer lock ( movementX instead of pageX - offset ), but I am having trouble smoothing the look motion. Here is my onMouseMove (using originalEvent since it is a jquery event): onMouseMove: function(e) { if(!document.pointerLockElement) return; var moveX = e

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 just need to draw scatter plot in 3D. from mpl_toolkits import mplot3d from matplotlib import pyplot as plt ax = plt.axes(projection="3d") ax.scatter(dots_x, dots_y, dots_z, c='red') plt.show() There dots_x, dots_y, dots_z are coordinates (python lists). Every time I running program I get ValueError: Invalid RGBA argument: (1.0, 0.0, 0.0, 0.300088123161615) I don't know anything about this tuple. BUT if i use plot3D instead of scatter3D i get perfect curve. Full error message: Traceback (most recent call last): File "C:\Users\bozzy\AppData

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 trying to write a simple Arkanoid with the help of Python and Tkinter. The goal is to make the ball reflect from the top, right and left sides. And if the player misses the ball so it touches the bottom side, the game would stop. Here's the code: from Tkinter import * import time root = Tk() canv = Canvas(root, highlightthickness=0) canv.pack(fill='both', expand=True) top = canv.create_line(0, 0, 640, 0, fill='green', tags=('top')) left = canv.create_line(0, 0, 0, 480, fill='green', tags=('left')) right = canv.create_line(639, 0, 639,

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): 由 翻译 强力驱动 问题: Have run into a problem with repository and tried almost every possible config setting found out there eg. pack.WindowMemory etc etc I believe someone has checked in a large file to remote repository and now each time I try and pull or push to it, GIT tries to pack it and runs out of memory: Auto packing the repository for optimum performance . You may also run "git gc" manually . See "git help gc" for more information . Counting objects : 6279 , done . Compressing objects : 100 % ( 6147 / 6147 ), done . fatal : Out of memory ,

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 using Recyclerview with CardView. I am aware how to control speed on list view. But not for Recyclerview. I searched a lot in found class name SmoothScroll . How to use that? I have no Idea! Right now Recyclerview by default scroll is fast. UPDATE: I Summarized Gil Answer with this 回答1: It's unclear what you mean when you say " smoothScroll ". You could be referring to the automatic " smoothScrollToPosition " which will automatically scroll to a specified position, you could be talking about manual scrolling and you could be talking

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 looking for a way of dragging frameless window in QtQuick2. I fallowed this thread on the forum Link but it giving me an error. Main different in the code is that my code uses QtQuick2ApplicationViewer instead of QmlApplicationViewer and it looks like QtQuick2ApplicationViewer do not have “.pos” property. This is my main.cpp #include #include "qtquick2applicationviewer.h" #include int main(int argc, char *argv[]) { QGuiApplication app(argc, argv); QtQuick2ApplicationViewer viewer; viewer.rootContext()->setContextProperty(

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: OpenCV reference manual (2.4.x) states that the constructor that initializes MSER requires the following parameters: delta, min_area, max_area, max_variation, min_diversity, max_evolution, area_threshold, min_margin, edge_blur_size. I am dealing with grayscale images. What is the use of the parameters "delta", "max_variation" and "min_diversity"? What property of an MSER do these parameters help control? I have tried a lot to find the exact answer to this and I could only find a little information on the following pages (none of which was

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: THis is my db configuration file , I am able to full import properly but getting problem to delta import there is two exception datasource exception related to mysql DHI <dataConfig> <dataSource driver="com.mysql.jdbc.Driver" url="jdbc:mysql://10.30.2.32:3306/artemis" batchSize="-1" user="username" password="password" /> <document> <entity name="job" pk="job_id" query="SELECT * FROM job" deltaImportQuery="SELECT * FROM job WHERE job_id = '${dataimporter.delta.id}'" deltaQuery="SELECT job_id FROM job WHERE updated_date > convert_tz('$

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 need to pass from RGB color space to HSV .. I searched in internet and found two different implementations, but those give me different results: A: precision mediump float; vec3 rgb2hsv(float r, float g, float b) { float h = 0.0; float s = 0.0; float v = 0.0; float min = min( min(r, g), b ); float max = max( max(r, g), b ); v = max; // v float delta = max - min; if( max != 0.0 ) s = delta / max; // s else { // r = g = b = 0 // s = 0, v is undefined s = 0.0; h = -1.0; return vec3(h, s, v); } if( r == max ) h = ( g - b ) / delta; // between