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How to get the primary IP address of the local machine on Linux and OS X? [closed]
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This doesn't rely on DNS at all, and it works even if /etc/hosts is not set correctly (1 is shorthand for 1.0.0.0):
ip route get 1 | awk '{print $NF;exit}'
or avoiding awk and using Google's public DNS at 8.8.8.8 for obviousness:
ip route get 8.8.8.8 | head -1 | cut -d' ' -f8
A less reliabl...
Common elements in two lists
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You can use set intersection operations with your ArrayList objects.
Something like this:
List<Integer> l1 = new ArrayList<Integer>();
l1.add(1);
l1.add(2);
l1.add(3);
List<Integer> l2= new ArrayList<Integer>(...
Read whole ASCII file into C++ std::string [duplicate]
...about converting eof() to a char. I suppose for old-school ascii character sets, passing any negative value (msb set to 1) would work. But passing \0 (or a negative value) won't work for wide or multi-byte input files.
– riderBill
Feb 22 '16 at 20:54
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Multi-line regex support in Vim
... editor after snippets, if snippets enabled
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How do I clone a specific Git branch? [duplicate]
... this step: "git checkout <name_of_branch>" Do this: git branch --set-upstream-to=origin/<branch> <local_branch> Thanks.
– ArunDhwaj IIITH
Apr 11 '18 at 23:42
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Check whether a value is a number in JavaScript or jQuery [duplicate]
I want to check misCharge is number or not. Is there any method or easy way in jQuery or JavaScript to do this?
3 Answers...
C++在堆上申请二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++在堆上申请二维数组假设要申请的是double型大小m*n数组有如下方法方法一：优点：申请的空间是连续的 缺点：较难理解double (*d)[n] = new double[m][n]复...假设要申请的是double型大小m*n数组
有如下方法
方法一：优点：申请的空...
Difference between $(document.body) and $('body')
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I don't think it's possibly to set document.body to anything other than a <body>: i.imgur.com/unJVwXy.png
– mpen
Mar 31 '18 at 18:53
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Difference between del, remove and pop on lists
Is there any difference between the above three methods to remove an element from a list?
11 Answers
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Using the “final” modifier whenever applicable in Java [closed]
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Obsess over:
Final fields - Marking fields as final forces them to be set by end of construction, making that field reference immutable. This allows safe publication of fields and can avoid the need for synchronization on later reads. (Note that for an object reference, only the field referen...