size | 易学教程

Where to find the evidence of how to calculate the size of a java object

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问题 I've searched about the size of a java object for a long time, there are a lot of answers like this, everyone is telling me that the size of the overhead of a java object, and how to calculate out the actual size. But how do they know that? I did not find any evidence from the official oracle documents. What is the evidence for that conclusion? Or the data was just come from some guesses based on some experiments? Another thing. It is mentioned in the official document that there is a

What is max size of ajax response data?

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问题 I send request from asp.net page and then wait for response, calling GetCommand via SetInterval method: function GetCommand(id, sid) { getCommandResponse = $.ajax({ type: "POST", async: true, url: "../WebServices/TSMConsole.asmx/GetCommand", data: "{'param' : '" + id + "', 'sid' : '" + sid + "'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(result, status) { AjaxFinishedGet(result, status); getCommandResponse = null; }, error: function(XMLHttpRequest,

How to place check whether Video file is greater than 2MB?

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问题 Suppose I have taken a video file from iphone library. I want to put a check that Video file shouldn't be greater than 2MB. I cant use videoMaximumDuration method. Because if any video is hd quality even 1 min duration video could be huge in size. Any views ? 回答1: urlvideo contains the url of selected video file NSString *strurl=[urlvideo path]; NSFileManager *fileManager = [NSFileManager defaultManager]; NSDictionary *fileAttributes = [fileManager attributesOfItemAtPath:strurl error:nil]; if

How to restrict the minimum size of the window for Eclipse e4

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问题 I am making an application based on Eclipse e4 framework. I was wondering how the minimal size of the application window can be controlled. There seems no properties can be defined in e4xmi file for this purpose. Does anyone know how to do it? I found a thread in Eclipse Community Forum (http://www.eclipse.org/forums/index.php/t/244875/) saying it can be achieved by creating my own renderer. How can I do that exactly? Thank you very much :) 回答1: Assuming you are using the built-in SWT

I need to make a global array in C with a size inputted by the user

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问题 Basically I need to make a global variable in C that is an array. The Array will be [n][22][n+1] where n is either 3,4,5 or 6 and is selected by the user. Is there a way to do this or should I just make the array [6][22][7], and have the functions dealing with it only use the parts up to n (if that makes any sense)? I've had to do this before for a computer science class but can't remember exactly how to do it. 回答1: For an array that small (well, assuming reasonably sized data types), you

How to Get Mac Desktop size

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问题 How do I discover the size of the Desktop (or screen size) of the Mac? 回答1: For the screen size use -[NSScreen frame] on an instance received through e.g. +[NSScreen mainScreen] or -[NSWindow screen]. To get the visible part without the dock and menu bar, use -[NSScreen visibleFrame]. Keep in mind that the full desktop can stretch over multiple screens. 来源： https://stackoverflow.com/questions/4489290/how-to-get-mac-desktop-size

tensorflow——tf.one_hot以及tf.sparse_to_dense函数

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1、tf.one_hot函数 import numpy as np import tensorflow as tf SIZE= 6 CLASS= 10 label1=np .random .randint ( 0 , 10 ,size=SIZE) b = tf .one _hot(label1,CLASS, 1 , 0 ) with tf .Session () as sess: sess .run (tf .global _variables_initializer()) sess .run (b) print(sess .run (b)) 输出结果：产生的随机数：[7, 2, 9, 8, 4, 2] [[ 0. 0. 0. 0. 0. 0. 0. 1. 0. 0. ] [ 0. 0. 1. 0. 0. 0. 0. 0. 0. 0. ] [ 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. ] [ 0. 0. 0. 0. 0. 0. 0. 0. 1. 0. ] [ 0. 0. 1. 0. 0. 0. 0. 0. 0. 0. ] [ 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. ]] 2、tf.sparse_to_dense函数 import tensorflow as tf import numpy as np SIZE= 6 CLASS= 10

I want to get the video size in MB from videoview from internet path

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问题 I'm trying to get the video file size and display it in the layout before starting the video. I have tried many thing but it wont work video_player_view = (VideoView) findViewById(R.id.videoView2); media_Controller = new MediaController(this); dm = new DisplayMetrics(); this.getWindowManager().getDefaultDisplay().getMetrics(dm); int height = dm.heightPixels; int width = dm.widthPixels; try { video_player_view.setMinimumWidth(width); video_player_view.setMinimumHeight(height); } catch

FBO lwjgl bigger than Screen Size - What I'm doing wrong?

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I need your help again. I wanna use Frame Buffer Object bigger than the Screen size. When I do it as below FBO size 1024 x 1024 is cut off from the top in resolution 1024 x 768. I couldn't find the solution on my own - that's why I'm asking. First part of code is the way I create FBO, I do the rendering between activate, and deactivate. Later I use texture. What am I doing wrong? What is the fastest way to clear Frame Buffer Object for reuse? public FrameBufferObject(int width, int height) { this.width = width; this.height = height; texture = glGenTextures(); frameBufferObject = GL30

WPF Grid and DataGrid sizing

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The UserControl I'm trying to work with is essentially laid out like so: <Grid> <Grid.RowDefinitions> <Row Height="*"/> <Row Height="*"/> </Grid.RowDefinitions> <wpftoolkit:DataGrid x:Name="PrimaryGrid"/>  <Border> <Grid> <Grid.RowDefinitions> <Row Height="*"/> <Row Height="*"/> </Grid.RowDefinitions> <wpftoolkit:DataGrid x:Name="SecondaryGrid"/>  <wpftoolkit:DataGrid x:Name="OtherGrid"/>  </Grid> </Border> </Grid> This UserControl is then placed in my Window as the last member of a Grid , the only one with Height="*" . I'm having problems with