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Use PHP to create, edit and delete crontab jobs?
Is it possible to use PHP to create, edit and delete crontab jobs?
12 Answers
12
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Scala list concatenation, ::: vs ++
Is there any difference between ::: and ++ for concatenating lists in Scala?
4 Answers
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Unable to hide welcome screen in Emacs
I want to hide the welcome screen.
6 Answers
6
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How to check if field is null or empty in MySQL?
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answered May 15 '18 at 14:05
Gleb KemarskyGleb Kemarsky
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阿里巴巴：大数据基础建议及产品应用 - 资讯 - 清泛网 - 专注C/C++及内核技术
...测）
“大数据”建设的几点建议
大数据意识
•连接、共享、1+1+1>5
•高层重视
大数据战略
•顶层设计
•系统思考到组织保障
大数据人才（believe，crazy）
•数据产品经理
•数据模型师、数据研发
•...
OS X: equivalent of Linux's wget
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edited Sep 3 '17 at 20:05
Mark Amery
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an...
Run cron job only if it isn't already running
...vious?
– Hamzahfrq
Jul 19 '14 at 17:05
1
@matteo: Yes, you're right. I had fixed that in my notes...
Retrieve the commit log for a specific line in a file?
Is there any way to get git to give you a commit log for just commits that touched a particular line in a file?
10 Answer...
make arrayList.toArray() return more specific types
So, normally ArrayList.toArray() would return a type of Object[] ....but supposed it's an
Arraylist of object Custom , how do I make toArray() to return a type of Custom[] rather than Object[] ?
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Is volatile expensive?
After reading The JSR-133 Cookbook for Compiler Writers about the implementation of volatile, especially section "Interactions with Atomic Instructions" I assume that reading a volatile variable without updating it needs a LoadLoad or a LoadStore barrier. Further down the page I see that LoadLoad ...