MOONSHADOW778.GITHUB.IO
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http://moonshadow778.github.io/
moonshadow778's blog
http://moonshadow778.github.io/
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moonshadow778's blog | moonshadow778.github.io Reviews
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moonshadow778's blog
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Java | moonshadow778's blog
http://moonshadow778.github.io/categories/Java
PermGen memory leak是Java开发者时不时会遇到的一种比较恼人的内存问题，伴随的典型的症状就是 java.lang.OutOfMemoryError: PermGen space. 如果搜索PermGen Memory Leak的解决方法，网上的方案五花八门，包括Overflow Stack上被狂点赞的那些帖子。
Perl的进程控制(一) | moonshadow778's blog
http://moonshadow778.github.io/2014/03/21/my-new-post-1
System "ls -l $HOME. The time is now $now. Failed to create a child process". 在上面的例子里， 一个文件句柄$CMD被打开并通过open被连接，@cmd array表示的一个命令 包括其options 被异步地执行，其输出则管道至$CMD。 Failed to fork a process. n". 实际上，system 做的事情，就是fork一个子进程处理命令，在fork出的子进程内调用exec执行命令 对应替换我们上面例子里的第8行 ，然后父进程wait在子进程的pid上。
Upsert | moonshadow778's blog
http://moonshadow778.github.io/2015/01/26/upsert
听起来这是一个数据库操作中很常见的场景，写起来很简单，不是吗 最直接的做法 我先搜一下记录存在与否，如果存在，就Update 否则就Insert，不是很直观吗 是的，就是这么简单 如果您能保证您的Upsert操作对象永远不会出现 并发. 比如MySQL的内建 INSERTON DUPLICATE KEY UPDATE. 语法，就提供了这样的便利 如果insert的数据会引起唯一索引 包括主键索引 的冲突，即这个唯一值重复了，则不会执行insert操作，而执行后面的update操作。 Test (a,b) values. 在这个例子里，假设表中只有a=1,b=1这一条记录，当试图插入a=1,b=2时，因为a=1记录已经存在，则执行update后面的b b 1,记录被更新为a=1,b=2(这个2是被b=b 1更新的，而不是插入的)。 Test (a,b) values. 另一个应用广泛的数据库PostgreSQL，本身就不提供 ON DUPLICATE KEY UPDATE. First try to update the key. Not there, so try to insert the key.
Perl | moonshadow778's blog
http://moonshadow778.github.io/categories/Perl
所以waitpid之后，要调用 alarm 0 来取消之前的Timeout定时器。 POSIX ":sys wait h". Ping 10.10.10.10'. Handle the SIGALRM and kill the child process(es). Give the process time to shut down nicely, then murder it. Start Timer - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #. Wait for child processes. SIGALRM should take care of any hangs. Is set by waitpid when the process exits. Failed to issue the command:". Succeed to issue the command:". System "ls -l $HOME. The time is now $now.
Others | moonshadow778's blog
http://moonshadow778.github.io/categories/Others
我是从官网直接下的Node.js for Mac OS X的pkg安装包。 Npm install -g hexo. 而为了在不同机器的Hexo环境中共享写好的内容 因为部署上去的hexo生成的blog都是静态的，每次有新的文章都需要重新生成静态页面 ，基于我使用的light theme，我把以下内容备份到了Github上. Themes light config.yml. M " comment ". Remote add origin git@github.com: my. Hexo git repo .git. Git rm -r -f - cached dir of.
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moonshadow604 - DeviantArt
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MoonShadow75 (Sorcerer/Summoner of Glowsticks) - DeviantArt
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Blog de Moonshadow77 - Que d'mande le peuple? - Skyrock.com
Mot de passe :. J'ai oublié mon mot de passe. Que d'mande le peuple? Troisieme blog déjà. esperons que celui la durera, le principe ne change pas . voici : Ma vie Par Anne Sophie. Saint mammes beach (77). Mise à jour :. Abonne-toi à mon blog! N'oublie pas que les propos injurieux, racistes, etc. sont interdits par les conditions générales d'utilisation de Skyrock et que tu peux être identifié par ton adresse internet (54.145.69.42) si quelqu'un porte plainte. Ou poster avec :. N'oublie pas que les propos...
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moonshadow778's blog
听起来这是一个数据库操作中很常见的场景，写起来很简单，不是吗 最直接的做法 我先搜一下记录存在与否，如果存在，就Update 否则就Insert，不是很直观吗 是的，就是这么简单 如果您能保证您的Upsert操作对象永远不会出现 并发. 比如MySQL的内建 INSERTON DUPLICATE KEY UPDATE. 语法，就提供了这样的便利 如果insert的数据会引起唯一索引 包括主键索引 的冲突，即这个唯一值重复了，则不会执行insert操作，而执行后面的update操作。 Test (a,b) values. 在这个例子里，假设表中只有a=1,b=1这一条记录，当试图插入a=1,b=2时，因为a=1记录已经存在，则执行update后面的b b 1,记录被更新为a=1,b=2(这个2是被b=b 1更新的，而不是插入的)。 Test (a,b) values. 另一个应用广泛的数据库PostgreSQL，本身就不提供 ON DUPLICATE KEY UPDATE. First try to update the key. Not there, so try to insert the key.
Moonshadow87 (Sagacchi desu~!) - DeviantArt
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سایه ی م اه. سایه ی م اه,آدما از اونی که از نزدیک می بینید دورترند. سایه ی م اه. آدما از اونی که از نزدیک می بینید دورترند. سلام خوش اومدین دوستان. با تبادل لینک موافقم. اگه خواستید کامنت بذارید. اگر وبم مشکلی داره. بهم بگید تا بر طرفش کنم. جمعه ۲۳ مهر۱۳۹۵ ] [ 11:35 ] [ پرستو. وایسا بینم دخترجون ، انگار جدی گرفتیا. میفهمی من مردتم ، مرد یعنی غیرت. تا همه بدونن صاحب داری. سه شنبه ۲۱ دی۱۳۹۵ ] [ 20:22 ] [ پرستو. زدم تو کار قالب وبلاگ درست کردن. برید توی وبلاگ کد نویسی هام. اگه هم خوشتون اومد لینکش هست.
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