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Altering a column: null to not null

...f NULL can have a few meanings. One of the common meaning is UNKNOWN. Take SCORE as an example. A null SCORE and a ZERO SCORE is a world of difference! Before you did the above recommendations. Make sure you application does not take null in its business logic. – TechTravelThin...
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How are the points in CSS specificity calculated

...endent of each other. 15 classes doesn't give your selector a specificity score of 150, it gives it a B value of 15. A single A value is enough to overpower this. As a metaphor, imagine a family of 1 grand parent, 1 parent and 1 child. This could be represented as 1,1,1. If the parent has 15 child...
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Xtreme Toolkit Pro 完整英文破解版 强大的Windows GUI界面库 - 源码下载 -...

Xtreme Toolkit Pro 完整英文破解版 强大的Windows GUI界面库Xtreme Toolkit , GUI,VC界面库Xtreme Toolkit Pro 由美国Codejock公司开发,Codejock 公司成立于1998年,致力于开发用户界面的控件产品和开发工具,能有效节约用户的...Xtreme Toolkit Pro 由美...
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What killed my process and why?

...kill off a process to free some up. The process to be killed is based on a score taking into account runtime (long-running processes are safer), memory usage (greedy processes are less safe), and a few other factors, including a value you can adjust to make a process less likely to be killed. It's a...
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How to specify different Debug/Release output directories in QMake .pro file

I have a Qt project and I would like to output compilation files outside the source tree. 11 Answers ...
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Can I specify multiple users for myself in .gitconfig?

... share | improve this answer | follow | edited Aug 25 '15 at 11:04 mitch 32666 sil...
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Can I target all tags with a single selector?

... share | improve this answer | follow | edited Jul 12 at 5:09 user1063287 7,674181...
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Apache not starting on MAMP Pro

...Then rename the file from envvars to _envvars. I also came across another problem of it not working correctly. Make sure the ports are Apache defaults, NOT MAMP defaults (port 80 etc). If it works straight away, this should not apply to you. ...
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驯服Linux OOM Killer(优质英文资料翻译) - 操作系统(内核) - 清泛网 - 专注IT技能提升

...据其不良评分来选择的。不良分数反映在 /proc/ <pid> /oom_score 中。这个值是根据系统丢失最少完成的工作量,恢复大量内存,不杀死任何消耗大量内存的无辜进程,并杀死最少数量的进程(如果可能限制为一个)的基础上确定的...
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驯服Linux OOM Killer(优质英文资料翻译) - 操作系统(内核) - 清泛网 - 专注IT技能提升

...据其不良评分来选择的。不良分数反映在 /proc/ <pid> /oom_score 中。这个值是根据系统丢失最少完成的工作量,恢复大量内存,不杀死任何消耗大量内存的无辜进程,并杀死最少数量的进程(如果可能限制为一个)的基础上确定的...