大约有 40,000 项符合查询结果(耗时:0.0327秒) [XML]

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The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead [dupl

When I attempt to connect to a MySQL server from PHP, I see the following error: 1 Answer ...
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Why does C++ require a user-provided default constructor to default-construct a const object?

...type X (or array thereof), X is const-default-constructible, if T is a union with at least one non-static data member, exactly one variant member has a default member initializer, if T is not a union, for each anonymous union member with at least one non-static data member (if any), exactly on...
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技术人员如何创业《一》—— 产品及想法 - 资讯 - 清泛网 - 专注C/C++及内核技术

技术人员如何创业《一》—— 产品及想法不得不说这是个浮躁的社会,人人在这个社会都想暴富或者成名。在这些引诱的驱使下很多人都脱离了原来的稳定工作创业。前几天看了《中国合伙...不得不说这是个浮躁的社会,人人...
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How do I use installed packages in PyCharm?

...er's path. It will bring up a short drop-down menu, from which you should select "More..". On the right hand side of the new pop-up, there will be an icon with the mouse-over text of "Show paths for the selected interpreter". Click that button. This new 'Interpreter Paths' pop-up is where you ca...
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Merge and interleave two arrays in Ruby

...e a, you can write a | b and assign the result to a variable. See the set union documentation for the Array class at http://www.ruby-doc.org/core/classes/Array.html#M000275. This answer assumes that you don't want duplicate array elements. If you want to allow duplicate elements in your final arra...
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Lost connection to MySQL server at 'reading initial communication packet', system error: 0

...irewall. I use PCTools Firewall Plus and it wasn't allowing full access to MySQL. Once I changed that it was fine. Hope that helps. Could that be it? Also, someone here suggests that it might be because the MySQL server is bound to the loop-back IP (127.0.0.1 / localhost) which effectively cuts y...
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Search of table names

... I'm using this and works fine SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME LIKE '%%' share | improve this answer | ...
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数据挖掘——分词入门 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...了解数据挖掘的目的:发现数据中价值。这个才是关键,如何发现数据中的价值。那什么是数据呢?比如大家要上网首先需要输入网址,打开网页后会自动判断哪些是图片、哪些是新闻、哪些是用户名称、游戏图标等。人大脑可...
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华为公司的新产品研发流程管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术

...以企业的研发环节为例,技术纷繁复杂,更新变幻莫测,如何决策?如何投资?如何预算控制、...引言:高效率和高质量似乎永远是一对解不开的矛盾。以企业的研发环节为例,技术纷繁复杂,更新变幻莫测,如何决策?如何投资?...
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SQL command to display history of queries

I would like to display my executed sql command history in my MYSQL Query Browser. What is the sql statement for displaying history? ...