封装
Checking for an empty field with MySQL
I\'ve wrote a query to check for users with certain criteria, one being they have an email address. Our site will allow a user to have or not have an email address.[详细]
2022-12-21 07:01 分类：问答General sparse iterative solver libraries
What are so开发者_C百科me of the better libraries for large sparse iterative (conjugate gradient, MINRES, GMRES, etc.) linear algebra system solving?I\'ve often coded my own routines, but I\'m interes[详细]
2022-12-21 04:51 分类：问答Is symfony's autoloader clever enough to only load necessary files?
I know sy开发者_开发知识库mfony can autoload files with spl_auto_register,but is it clever enough?[详细]
2022-12-21 02:58 分类：问答如何打破临床基因测序“死循环”僵局？？
_wap1****3046 开发者_JAVA技巧 2022-05-12 22:45 能否先从人类的近亲物种开始研究呢帅1148806799[详细]
2022-12-21 01:32 分类：问答jQuery Slideshow not working in IE8, works fine in Safari/Firefox
The website (www.hilaryandmatthew.com) for my upcoming wedding has a really nifty JQuery slideshow (courtesy of www.dynamicdrive.com)[详细]
2022-12-20 23:49 分类：问答北京海洋馆有什么好玩的？？
花浅浅间 2022-05-13 16:22 海洋馆是很多小朋友很喜欢去的一个地方，下面就来介绍一下北京海洋馆有哪些好玩的。操作方法01北京海洋馆位于北京动物园内，海洋馆的南边就是长河，旁边坐落有北京展览馆、天文馆和首[详细]
2022-12-20 22:30 分类：问答现在的战斗机，近战的几率有多高？
吴瀚哲 开发者_Python百科 2022-05-16 10:22 战斗机和防空系统，是相辅相成的。飞机出现时，各个国家意识到制空权成为影响现代战争走向的重要因素；但是随着时间的发展，人们开始意识到防空作战的重要性。不过防[详细]
2022-12-20 18:00 分类：问答Should I use unset in php __destruct()?
Is it a good practice to unset the variables that you used in a class? Or its an optional? If its a good practice what is the benefit of using 开发者_如何学Gothe unset function?You really don\'t nee[详细]
2022-12-20 12:06 分类：问答已知x=1是方程2x²+3x+k=0的一个根，则k=？
拉给发发 开发者_C百科 2022-05-18 16:26 将x＝1代入得：2×1+3×1+k＝0，5+k＝0， k＝-5[详细]
2022-12-20 09:41 分类：问答
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