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What is the best way to uninstall gems from a rails3 project?
... you are using the RVM gemset. whenever you install a gem with gem install xxx inside a RVM gemset, there is where it stays, so doing a plain gem uninstall xxx on a RVM gemset will remove the gem installed on that gemset and not the system one.
– Esteban Feldman
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Android - Back button in the title bar
...per.onCreate(savedInstanceState);
setContentView(R.layout.activity_xxx);
getActionBar().setHomeButtonEnabled(true);
[...]
}
[...]
}
If your action extends AppCompatActivity
public class YourActivity extends AppCompatActivity {
@Override
protecte...
How can I remove a commit on GitHub? [duplicate]
... like me, you can go back with a "git reflog" and then a "git reset --hard xxx" where xxx is the last commit you've made before the accidental reset...
– Fjallbacka
Jul 8 '18 at 20:01
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What is the use of the @Temporal annotation in Hibernate?
...wered Jul 8 '17 at 11:20
Avikool91Avikool91
44744 silver badges55 bronze badges
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Formatting Decimal places in R
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Here format="f" gives floating numbers in the usual decimal places say, xxx.xxx, and digits specifies the number of digits. By contrast, if you wanted to get an integer to display you would use format="d" (much like sprintf).
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How can I extract a predetermined range of lines from a text file on Unix?
...east a few minutes. Also the fastest variation on GNU seems to be tail -n +XXX filename | head XXX.
– Antonis Christofides
Feb 5 '16 at 11:21
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Add legend to ggplot2 line plot
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Gregor Thomas
91.9k1515 gold badges126126 silver badges235235 bronze badges
answered Apr 27 '12 at 10:57
csgillespi...
VM 磁盘空间扩容引起的一些问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...60，LUN80 问题解决。
得出结论，
虽然VM官方声称可以在线扩展硬盘的容量，但建议谨慎操作，还是找个夜深人静的时候，把数据迁移后，再扩容，一切正常后，在把数据迁移回来。 VM 磁盘 空间扩容 问题
Validating email addresses using jQuery and regex
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UPDATES
http://so.lucafilosofi.com/jquery-validate-e-mail-address-regex/
using new regex
add...
乘着App的创业浪潮 行业短信也迎来了新生和爆发 - 资讯 - 清泛网 - 专注C/C...
...年第一季度中国互联网餐饮外卖市场报告》显示，一季度在线外卖成交订单高达1.76亿单，同比增长340%。除此之外，8月份中国P2P交易额接近1000亿元，创单月最高纪录，P2P理财的火爆也让移动支付、信息确认等短信验证码高频动...