peek

Peeking an MSMQ Outgoing Queue with JScript

本秂侑毒 提交于 2019-12-13 06:27:41
问题 I created a script to monitor a set of queues, and, while it works perfectly with Remote Private Queues, it doesn't work with Outgoing Queues. I made an experiment by removing everything but the essential from the script, and I created the following test script: var info = new ActiveXObject("MSMQ.MSMQQueueInfo"); info.FormatName = /*<Queue name>*/; // 0x80 = MQ_ADMIN_ACCESS // 0x20 = MQ_PEEK_ACCESS // 0x00 = MQ_DENY NONE var mq = info.Open(0x80 | 0x20, 0x00); var msg = mq.PeekCurrent(false,

Synchronized reading data from Process's empty stdout causes deadlock [duplicate]

我的未来我决定 提交于 2019-12-12 01:24:46
问题 This question already has an answer here : Reading from a process, StreamReader.Peek() not working as expected (1 answer) Closed 3 years ago . I am having trouble setting up a c# application that creates and interacts with a python process1. A simplistic example is given below. EDIT: Further research on SO unveiled that my question is a possible duplicate. A potentially related known bug in the .NET Framework is duscussed here and here. It seems that back in 2014 the only easy workaround is

VScode安装后的插件安装

冷暖自知 提交于 2019-12-11 22:02:34
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> Chinese(Simplified) Language Pack for Visual Stidio Code 中文汉化包 对于一些英文不太好的小伙伴,上来第一件事肯定是要切换成中文语言环境,安装汉化包插件之后,按快捷键Ctrl+Shift+P调出命令面板,输入Configure Display Language,选择zh-ch,然后重启vs code即可。 open-in-browser 在浏览器中查看 VS Code没有提供直接在浏览器中运行程序的内置功能,所以我们需要安装此插件,在浏览器中查看我们的程序运行效果。 Live Server 实时预览 安装这个插件之后,我们在编辑器中修改代码,按Ctrl+S保存,修改效果就会实时同步,显示在浏览器中,再不用手动刷新。 Auto Close Tag 自动闭合标签 输入标签名称的时候自动生成闭合标签,特别方便。 Auto Rename Tag 尾部闭合标签同步修改 自动检测配对标签,同步修改。 Bracket Pair Colorizer 用不同颜色高亮显示匹配的括号 对配对的括号进行着色,方便区分,未安装该插件之前括号统一都是白色的。 Highlight Matching Tag 高亮显示匹配标签 这个插件自动帮我们将选中的匹配标签高亮显示,再也不用费劲查找了

JLine the contract for NonBlockingReader seems broken

非 Y 不嫁゛ 提交于 2019-12-11 15:53:16
问题 Follows on from my previous question about JLine. OS: W10, using Cygwin. def terminal = org.jline.terminal.TerminalBuilder.builder().jna( true ).system( true ).build() terminal.enterRawMode() // NB the Terminal I get is class org.jline.terminal.impl.PosixSysTerminal def reader = terminal.reader() // class org.jline.utils.NonBlocking$NonBlockingInputStreamReader def bytes = [] // NB class ArrayList int readInt = -1 while( readInt != 13 && readInt != 10 ) { readInt = reader.read() byte

Getting number of bytes available to read in a socket

笑着哭i 提交于 2019-12-11 01:28:12
问题 Here's my scenario. I have a TCP client that is talking to the server. Both the server and the client are running on local machine (Windows). The dialog goes something like: Client sends data to the server (Request) Client does shutdown for send on the socket Client blocks via a read call for response Server receives the data, processes, and sends back a response (one shot, not broken into chunks) Server does shutdown for send on the socket Client receives the response, and continues

Return value of ifstream.peek() when it reaches the end of the file

余生颓废 提交于 2019-12-10 18:41:40
问题 I was looking at this article on Cplusplus.com, http://www.cplusplus.com/reference/iostream/istream/peek/ I'm still not sure what peek() returns if it reaches the end of the file. In my code, a part of the program is supposed to run as long as this statement is true (sourcefile.peek() != EOF) where sourcefile is my ifstream. However, it never stops looping, even though it has reached the end of the file. Does EOF not mean "End of File"? Or was I using it wrong? 回答1: Consulting the Standard,

二叉树

浪子不回头ぞ 提交于 2019-12-10 15:18:46
先看一些基本概念 1.结点的度 结点拥有的子树数目称为结点的度 2.二叉树 结点的度最大为2,而且左子树和右子树是有顺序的,不能随意改变 3.广义表创建二叉树: 广义表的的约定如下: 1.表中的一个字母表示一个结点的数据信息 2.每个结点的左子树与右子树之间用逗号隔开;如果只有右子树而无左子树,则逗号不能省略。左右子树存在于括号中 A(B(C(,E),D),F(G,))表示的树为: 首先分析算法的过程: 1)遇到(,则说明前一个结点一定是父节点,而且接下来处理的是左结点 2)遇到,则说明即将处理右节点 3)遇到)说明一颗子树已处理完 4)遇到字母,则表示是一个结点 代码如下: //先创建二叉树: public class BinaryTree { private String data; private BinaryTree left; private BinaryTree right; public BinaryTree(String data) { this.data = data; } public BinaryTree() { } //get、set省略 } 广义表创建二叉树: //广义表初始化树 public BinaryTree init(String s) { BinaryTree root = null; //根节点 BinaryTree node = null;

Help: ZX81 'BASIC' Peek function [duplicate]

馋奶兔 提交于 2019-12-10 12:49:17
问题 This question already has answers here : Help: ZX81 BASIC “Peek” function (3 answers) Closed 5 years ago . I need a way to find if the character ('<') has hit a wall (Black pixel Graphic) -On a ZX81 game. I'm been looking at another game... which uses code if peek(peek 16398 +256*peek 16399) = code " blackpixel graphic " then ... Which seems to work for them... Is this correct code? I'm not really knowledgable with addresses and getting memory and stuff. Please help me... -If you know a

序列化和反序列化二叉搜索树 Serialize and Deserialize BST

我的梦境 提交于 2019-12-10 01:39:07
问题: Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or transmitted across a network connection link to be reconstructed later in the same or another computer environment. Design an algorithm to serialize and deserialize a binary search tree . There is no restriction on how your serialization/deserialization algorithm should work. You just need to ensure that a binary search tree can be serialized to a string and this string can be deserialized to the original tree structure. The encoded string

java BlockingQueue does not have a blocking peek?

ε祈祈猫儿з 提交于 2019-12-09 07:39:29
问题 I have a blocking queue of objects. I want to write a thread that blocks till there is a object on the queue. Similar to the functionality provided by BlockingQueue.take(). However, since I do not know if I will be able to process the object successfully, I want to just peek() and not remove the object. I want to remove the object only if I am able to process it successfully. So, I would like a blocking peek() function. Currently, peek() just returns if the queue is empty as per the javadocs.