A semaphore initialized to one, and which is used such that it only has at most one permit available, can serve as a mutual exclusionlock.This is more...
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其他好文 时间:
2014-09-20 18:29:59
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251
利用 if .... then单层、简单条件判断式if [ 条件判断式 ]; then 当条件判断式成立时,可以进行的命令工作内容;fi {$0 someword}"else echo "The only parameter is 'hello', ex> {$0 hello}"finetst...
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其他好文 时间:
2014-09-20 18:00:29
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262
Alibre.Geomagic.Design.2014.v15.0.2.15088.Win32 1CDDelcam.PowerShape.2014.SP5.Update.Only 1CDGibbsCAM.2013.v10.5.18.0.Win32_64 2DVDGolden.Software.Gra...
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其他好文 时间:
2014-09-20 09:59:47
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214
the /tmp folder of linux will be cleaned every time when you reboot.Well, actually, It doesn't "delete on reboot"; it only exists in RAM in the first ...
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其他好文 时间:
2014-09-20 08:50:36
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218
The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integer n representing the total numb...
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其他好文 时间:
2014-09-20 07:45:26
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195
Given a string containing only digits, restore it by returning all possible valid IP address combinations.For example:Given "25525511135",return ["255...
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其他好文 时间:
2014-09-20 07:44:47
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235
昨天项目MySQL数据库从5.5升级到5.6,导致部分表无法进行更新操作,报如下错误:When @@GLOBAL.ENFORCE_GTID_CONSISTENCY = 1, updates to non-transactional tables can only be done in either ...
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数据库 时间:
2014-09-19 17:26:25
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429
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana...
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其他好文 时间:
2014-09-19 06:35:45
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233
Given a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtree of a node contains only n...
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其他好文 时间:
2014-09-19 04:28:05
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247
贴出源码中的优化脚本先: #!/bin/sh
#
#?Execute?Only?Once
#
echo?‘vm.overcommit_memory=1‘?>>?/etc/sysctl.conf
echo?‘vm.min_free_kbytes=5000000‘?>>?/etc/sysctl.conf
echo?‘vm.drop_caches=1‘?...
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其他好文 时间:
2014-09-18 19:12:44
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274