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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
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git hash-object -t tree /dev/null
Or, as Ciro Santilli proposes in the comments:
printf '' | git hash-object --stdin -t tree
Or, as seen here, from Colin Schimmelfing:
git hash-object -t tree --stdin < /dev/null
So I guess it is safer to define a variable with the result of that command...
CPU Privilege Rings: Why rings 1 and 2 aren't used?
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From superuser.com/questions/1402537/…: "Running ring 0 code in ring 1 causes a lot of additional instruction faults, as ring 1 is not allowed to execute any privileged instructions, of which guest's ring-0 contains plenty. With each of t...
Case insensitive access for generic dictionary
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There's no way to specify a StringComparer at the point where you try to get a value. If you think about it, "foo".GetHashCode() and "FOO".GetHashCode() are totally different so there's no reasonable way you could implement a case-insensitive get on a case-se...
How to get a time zone from a location using latitude and longitude coordinates?
...stions on StackOverflow about resolving a time zone from a location. This community wiki is an attempt at consolidating all of the valid responses.
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sed: print only matching group
...regexp-extended` option otherwise I was getting invalid reference \1 on s' command's RHS ` error.
– Daniel Sokolowski
Aug 11 '14 at 16:11
15
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jQuery - setting the selected value of a select control via its text description
...xt1;
}).prop('selected', true);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select>
<option value="0">One</option>
<option value="1">Two</option>
</select>
jQuery versions below 1.6 and ...
C++及Windows异常处理(try，catch; __try,__finally, __except) - C/C++ - ...
...用标示逐一说明
本文参考了如下博文：
http://www.cnblogs.com/wenziqi/archive/2010/08/26/1809074.html
http://blog.csdn.net/lvwenshuai/article/details/6163342
http://topic.csdn.net/t/20030527/10/1838724.html
http://zhidao.baidu.com/question/183400727.html
C++ 异常处理：try...
SQL query to find record with ID not in another table
...Not In" since this method has a limited number of values cf : dba-oracle.com/t_maximum_number_of_sql_in_list_values.htm
– G.Busato
Feb 19 '18 at 11:04
2
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Is there a way to suppress JSHint warning for one given line?
...be linted with JSHint.
You can also ignore a single line with a trailing comment like this:
ignoreThis(); // jshint ignore:line
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Can you use an alias in the WHERE clause in mysql?
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