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How to get object length [duplicate]
...you taken a look at underscore.js (http://underscorejs.org/docs/underscore.html)? It's a utility library with a lot of useful methods. There is a collection size method, as well as a toArray method, which may get you what you need.
_.size({one : 1, two : 2, three : 3});
=> 3
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Sorting multiple keys with Unix sort
...e default separator accordinding to docs gnu.org/software/coreutils/manual/html_node/… is space, sometimes the field count is not what you'd expect. Perhaps as others have said here because of the LC_CTYPE locale setting. When in doubt count from the beginning of the line!
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How can I list all commits that changed a specific file?
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git log --stat --follow -- *.html => output list of commits with exactly one files in each commit. Very nice!
– Sergio Belevskij
Feb 7 '19 at 9:22
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How to get response status code from jQuery.ajax?
...re are some articles on the subject: pearweb.com/javascript/XMLHttpRequest.html developer.mozilla.org/En/Using_XMLHttpRequest "The key thing to note here is that the result status is being compared to 0 for success instead of 200. This is because the file and ftp schemes do not use HTTP result code...
Best way to simulate “group by” from bash?
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I found http://unix.derkeiler.com/Newsgroups/comp.unix.shell/2005-11/0118.html. But it's ugly as hell...
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...据。
参考：
http://www.lanceyan.com/tech/mongodb/mongodb_repset1.html副本集 NoSQL
Error: Could not find or load main class in intelliJ IDE
...e issue:
https://www.jetbrains.com/help/idea/creating-and-managing-modules.html
Here's what I did:
Goto File | Project Structure, or press Crtl+Shift+Alt+S
Select Modules under the Project Settings section.
In the Sources tab click Sources on the 'Mark as:' line.
Click the Apply button.
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grep, but only certain file extensions
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grep -rnw "some thing to grep" --include=*.{module,inc,php,js,css,html,htm} ./
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Create a dictionary with list comprehension
...er class in the collections package: docs.python.org/2/library/collections.html#collections.Counter
– fortran
Jul 19 '19 at 5:52
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View/edit ID3 data for MP3 files
.... For more information visit: gigamonkeys.com/book/practical-an-id3-parser.html
– Mirjalal
Jan 17 '16 at 17:34
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