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Can (domain name) subdomains have an underscore “_” in it?

...interior characters only letters, digits, and hyphen." Which part of that allows an underscore? – claudekennilol Sep 16 '16 at 19:01 2 ...
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What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort

... General numeric sort compares the numbers as floats, this allows scientific notation eg 1.234E10 but is slower and subject to rounding error (1.2345678 could come after 1.2345679), numeric sort is just a regular alphabetic sort that knows 10 comes after 9. See http://www.gnu.o...
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What exactly does git's “rebase --preserve-merges” do (and why?)

...it, and deal with some extra wrinkles The most interesting part, conceptually, is perhaps in picking what the new commit's merge parents should be. Replaying merge commits also require explicitly checking out particular commits (git checkout <desired first parent>), whereas normal rebase do...
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What is the single most influential book every programmer should read? [closed]

...tt Hargett How To Solve It by George Polya The Alchemist by Paulo Coelho Smalltalk-80: The Language and its Implementation Writing Secure Code (2nd Edition) by Michael Howard Introduction to Functional Programming by Philip Wadler and Richard Bird No Bugs! by David Thielen Rework by Jason Freid and...
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Intelligent way of removing items from a List while enumerating in C#

... The best solution is usually to use the RemoveAll() method: myList.RemoveAll(x => x.SomeProp == "SomeValue"); Or, if you need certain elements removed: MyListType[] elems = new[] { elem1, elem2 }; myList.RemoveAll(x => elems.Contains(x)); ...
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Maximum and Minimum values for ints

...on doesn't apply. The plain int type is unbounded. However, you might actually be looking for information about the current interpreter's word size, which will be the same as the machine's word size in most cases. That information is still available in Python 3 as sys.maxsize, which is the maximum ...
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Adding information to an exception?

...essage + ' happens at %s' % arg1) bar('arg1') Traceback (most recent call last): File "test.py", line 13, in <module> bar('arg1') File "test.py", line 11, in bar raise type(e)(e.message + ' happens at %s' % arg1) IOError: Stuff happens at arg1 Update 1 Here's a slight modif...
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Django: multiple models in one template using forms [closed]

...eparate project) OR creating a new Customer, then creating a Ticket and finally creating a Note assigned to the new ticket. ...
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How to get URL of current page in PHP [duplicate]

...e - the former has the path to the actual script, the latter has the originally requested path. – Amber Aug 16 '09 at 2:19 1 ...
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Thread context switch Vs. process context switch

...that a context switch messes with the processors cacheing mechanisms. Basically, when you context switch, all of the memory addresses that the processor "remembers" in its cache effectively become useless. The one big distinction here is that when you change virtual memory spaces, the processor's Tr...