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How to check the version before installing a package using apt-get?
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answered Sep 19 '13 at 7:05
Yasiru GYasiru G
5,70955 gold badges1616 silver badges3636 bronze badges
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How do you install an APK file in the Android emulator?
...your terminal: ./adb install yourapkfilename.apk if you get the following error message: error: no devices found - waiting for device, follow the step 5.
Run your emulator from Android Studio, once emulator active then repeat step 4, you will see the success message on your terminal.
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2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...便的数据仓库解决方案，就是SQL接口，跟各个云服务无缝连接，最大特点就是快，在TB到PB级别非常好的性能，我在工作中也是直接使用，它还支持不同的硬件平台，如果想速度更快，可以使用SSD的，当然支持容量就小些。
Hadoop...
微博为什么限制140字(附短信70字限制考) - 创意 - 清泛网 - 专注C/C++及内核技术
...就注册了，之后再也没登录过。今天在人人网转发状态，提示我超过140字了，突然就好奇大家都在凑什么热闹，为什么除了网易微博，都限制140个字呢?
当然也已经有过关于这个问题的解释，比如人民网上这位“并没有twitter方...
What is %2C in a URL?
...# | 43 | C | 63 | c |
| 04 | EOT | 24 | $ | 44 | D | 64 | d |
| 05 | ENQ | 25 | % | 45 | E | 65 | e |
| 06 | ACK | 26 | & | 46 | F | 66 | f |
| 07 | BEL | 27 | ' | 47 | G | 67 | g |
| 08 | BS | 28 | ( | 48 | H | 68 | h |
| 09 | TAB | 29 | ) | 49 | I | 69 |...
Inputting a default image in case the src attribute of an html is not valid?
...e. Maybe you wanna use JQuery to hook the event.
<img src="foo.jpg" onerror="if (this.src != 'error.jpg') this.src = 'error.jpg';">
Updated with jacquargs error guard
Updated: CSS only solution
I recently saw Vitaly Friedman demo a great CSS solution I wasn't aware of. The idea is to appl...
How to calculate the SVG Path for an arc (of a circle)
...of a path with many components. Or maybe they did it to make sure rounding errors didn't build up along the length of a complex path.
The implementation notes are also useful for the original question, since they have more mathematical pseudocode for converting between the two parameterizations (wh...
How to check if all of the following items are in a list?
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answered Oct 14 '10 at 9:05
Glenn MaynardGlenn Maynard
48.9k88 gold badges102102 silver badges128128 bronze badges
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How to make a SIMPLE C++ Makefile
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As far as I can tell, that error message only comes up if you have spaces. Make sure that you don't have any lines starting with spaces (space + tab will give that error). That's the only thing I can think of..
– Brendan Long
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Hash function that produces short hashes?
...tly unique...
I'm no expert, so please correct this if it has any glaring errors (in Python again like the accepted answer):
import base64
import hashlib
import uuid
unique_id = uuid.uuid4()
# unique_id = UUID('8da617a7-0bd6-4cce-ae49-5d31f2a5a35f')
hash = hashlib.sha1(str(unique_id).encode("UTF...