wrapper

Java Immutable Objects [closed]

由 守給你的承諾、 提交于 2020-01-12 19:02:06
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . I am learning the concept of immutability. I understand that immutable objects cannot change their values once the object is created. But I didn't understand the following uses of immutable objects. They are are automatically thread-safe and have no synchronization issues. How ?

Positioning a “wrapper” div underneath a fixed navigation bar?

由 瘦欲@ 提交于 2020-01-10 01:21:09
问题 I've started work on a brand new site and i've been playing around with designs for a while, however one problem I seem to be having is regarding positioning a navigation bar with a full screen width that is fixed to scroll. Underneath i have created a div called "wrapper" which is set to centre at a width of 980px . Below is code example; <style> #navBar { background: RGB(0, 0, 0); height: 30px; position: fixed; width: 100%; } #wrapper { margin: 0 auto; width: 980px; } </style> <div id=

How to wrap an already existing function with a new function of the same name

由 ⅰ亾dé卋堺 提交于 2020-01-09 07:49:11
问题 Is it possible to create a wrapper around a function that has the exact same name as the original function? This would be very useful in circumstances where the user wants to do some additional checks on input variables before they are passed on to the built in function How to interrupt MATLAB IDE when it hangs on displaying very large array? 回答1: Actually alternatively to slayton's answer you don't need to use openvar . If you define a function with the same name as a matlab function, it

nexus 安装启动出现的问题

由 不羁的心 提交于 2020-01-08 16:14:46
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 一、nexus 安装报错 wrapper | OpenSCManager failed - 拒绝访问 解压nexus压缩包，在控制台(cmd)下执行nexus install命令安装nexus服务（或者在目录：nexus-2.7.0-bundle\nexus-2.7.0-04\bin\jsw\windows-x86-64下右击install-nexus.bat以管理员身份运行）的时候报错： wrapper | OpenSCManager failed - 拒绝访问。 (0x5) 这个是由于登陆的用户是普通用户，权限不够 解决方式： 方式一：找到cmd.exe文件，右键点击 ----> 以管理员身份运行 ，然后就可以正常执行nexus install 和 nexus start 命令了 方式二：到nexus安装目录的bin 目录下找到对应系统使用的脚本文件，右键点击 --> 以管理员身份运行 例如：到nexus-2.7.0-bundle\nexus-2.7.0-04\bin\jsw\windows-x86-64目录下找到start-nexus.bat脚本文件，右键点击 ----> 以管理员身份运行 由于我是64为的Win7系统，所以文件目录是windows-x86-64 运行脚本文件和在cmd下运行命令一样 二

uvloop http

由 大兔子大兔子 提交于 2020-01-07 14:42:27
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> import time from statistics import mean, stdev import asyncio import uvloop import aiohttp urls = [ 'https://aws.amazon.com', 'https://google.com', 'https://microsoft.com', 'https://www.oracle.com/index.html' 'https://www.python.org', 'https://nodejs.org', 'https://angular.io', 'https://www.djangoproject.com', 'https://reactjs.org', 'https://www.mongodb.com', 'https://reinvent.awsevents.com', 'https://kafka.apache.org', 'https://github.com', 'https://slack.com', 'https://authy.com', 'https://cnn.com', 'https://fox.com', 'https://nbc.com', 'https://www

functools.wraps是做什么的？

由 蓝咒 提交于 2020-01-07 02:15:45
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 在 对另一个问题的答案 发表评论时，有人说他们不确定 functools.wraps 在做什么。 所以，我问这个问题，以便在StackOverflow上有它的记录以备将来参考： functools.wraps 是什么？ #1楼 我经常将类而不是函数用于装饰器。 我在这方面遇到了麻烦，因为对象不会具有函数所期望的所有相同属性。 例如，一个对象将没有属性 __name__ 。 我有一个特定的问题，很难跟踪Django报告错误“对象没有属性' __name__ '”的位置。 不幸的是，对于类风格的装饰器，我认为@wrap不会胜任。 相反，我创建了一个基本的装饰器类，如下所示： class DecBase(object): func = None def __init__(self, func): self.__func = func def __getattribute__(self, name): if name == "func": return super(DecBase, self).__getattribute__(name) return self.func.__getattribute__(name) def __setattr__(self, name, value): if name ==

Zend Form and nested fieldsets/containers?

由 别等时光非礼了梦想. 提交于 2020-01-06 14:46:13
问题 I have a form. I have a single element that needs to be wrapped in a div or fieldset (for formatting). Then I have two groups of elements, including the above, that I want to wrap in a fieldset or div. I've managed to create two groups, but Zend Form seems to balk at letting me create a group containing a group. Should I be able to do this? Here's a simple code example, assuming I have created elem1, elem2 and elem3. $form->addDisplayGroup(array('elem1'), 'group1', array("legend" => "Wrapped

Are there any disadvantages to wrapper types besides performance?

由 萝らか妹 提交于 2020-01-06 07:23:30
问题 In my line of work I'm mostly working on business applications that have a lot of database code. I don't usually write number crunching scientific logic. This makes me wonder - would it be a good idea to always use wrapper types in my entity classes? I've found myself frequently converting primitives to wrappers. On the contrary I can't think of a case where I couldn't do without a primitive. If I declared the fields in my entities to be wrappers the data read from db would be automatically

Simple PDO Wrapper not working

由 早过忘川 提交于 2020-01-06 04:18:13
问题 I'm trying out this Wrapper and no matter what I always just get 'boolean false' when I var_dump($row) in my index.php file. Here is my db class: <?php // database.php class DB { protected $_connection = array(); // to map the connection protected $_dbh; // property which keeps the database handler protected $_database; // property to keep the database name protected $_table; // property to keep the table name protected $_query; // property to keep a query statement public function _

How should I name database wrapper object?

由 感情迁移 提交于 2020-01-05 19:08:02
问题 For my CMS application I'm writing a DLL that I will include into my projects. That DLL will include functionality like retrieving all news for a specific project. For instance, my database contains a table called News. By using the Entity Framework 4 I have a automatic generated class called News . I do not want my DLL methods return this object rather than a wrapper class, that only contains properties. How should I name this wrapper class? For now I've always appended the word "Container",
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