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What is the exact meaning of IFS=$'\n'?

...cessary. Run new IFS in subshell to avoid overriding the default IFS: ar=(123 321); ( IFS=$'\n'; echo ${ar[*]} ) Besides I don't really believe you recover the old IFS fully. You should double quote it to avoid line breaking such as OLDIFS="$IFS". ...
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How to convert a ruby hash object to JSON?

...json/ext' # to use the C based extension instead of json/pure puts {hash: 123}.to_json share | improve this answer | follow | ...
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30岁之后,程序员该向什么方向发展? - 杂谈 - 清泛网 - 专注C/C++及内核技术

...例,因为我是30岁才开始学编程的,首先写了个社区网络系统。大概就这样在家里折腾了一年,然后加入了Teambition,在Teambition写前端,到人多了,前端团队成熟之后又开始写后端,带领后端团队搭建后端系统。 我为什么要做后...
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Getting distance between two points based on latitude/longitude

...to the wise, this formula requires all degrees be positive. radians(abs(52.123)) should do the trick... – Richard Dunn Jul 4 '17 at 11:41 ...
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Is there a good reason to use upper case for SQL keywords? [closed]

...ited Oct 17 '14 at 16:09 hichris123 9,5151212 gold badges5050 silver badges6666 bronze badges answered Nov 16 '08 at 8:22 ...
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How do I use itertools.groupby()?

... edited Jul 29 at 20:57 Seanny123 5,70277 gold badges4949 silver badges100100 bronze badges answered Aug 10 '08 at 18:45 ...
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How do you use “git --bare init” repository?

... them to git and create the first commit. > cd /path/to/work > echo 123 > afile.txt > git add . > git config --local user.name adelphus > git config --local user.email adelphus@example.com > git commit -m "added afile" [master (root-commit) 614ab02] added afile 1 file changed,...
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Get __name__ of calling function's module in Python

... 123 Check out the inspect module: inspect.stack() will return the stack information. Inside a fu...
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What does flushing the buffer mean?

... 123 Consider writing to a file. This is an expensive operation. If in your code you write one byte...
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Send POST Request with Data Specified in File via Curl

...tal.xlsx' 'http://example.com/upload.aspx?user=example&password=example123&type=XLSX' share | improve this answer | follow | ...