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Linq 多字段排序，二次排序 - .NET(C#) - 清泛IT论坛，有思想、有深度
Linq：ordered = source.OrderByDescending( t => t.f1 ).ThenBy( t => t.f2 );
类似SQL：select * from t1 order by f1 desc ,f2 asc
这种写法里 OrderBy、ThenBy 是升序的，OrderByDescending、ThenByDescending 是降序的。
How to use ? : if statements with Razor and inline code blocks
... should work:
<span class="vote-up@(puzzle.UserVote == VoteType.Up ? "-selected" : "")">Vote Up</span>
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Turning off “created by” stamp when generating files in IntelliJ
...ording to your key-mapping preferences) to bring up the 'fix' options, and select 'edit template'. This will bring you right to the setting that needs to be updated. Simply remove all the text (or replace it with something more palatable to you), hit enter and you're done.
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How to create a directory using nerdtree
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Pressing m would open a menu below and you can select from a list of actions.
NERDTree Menu. Use j/k/enter and the shortcuts indicated
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> (a)dd a childnode
(m)ove the current node
(d)elete the current node
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Last non-empty cell in a column
...should probably include something about what [RANGE] is supposed to be. I selected the entire column by using "N:N". Here is an example that worked for me: =INDEX(N:N,MATCH(1E+306,N:N,1))
– swimfar
Sep 7 '18 at 18:13
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Django - filtering on foreign key properties
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Is this going to hit the DB twice, should I be using select_related() to make this more optimal?
– Fraser Graham
Dec 30 '09 at 22:52
5
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Squash the first two commits in Git? [duplicate]
...te July 2012 (git 1.7.12+)
You now can rebase all commits up to root, and select the second commit Y to be squashed with the first X.
git rebase -i --root master
pick sha1 X
squash sha1 Y
pick sha1 Z
git rebase [-i] --root $tip
This command can now be used to rewrite all the history lead...
How do I sort unicode strings alphabetically in Python?
...just wanted to point out one coding inefficiency in Human Sort. To apply a selective char-by-char translation to a unicode string s, it uses the code:
spec_dict = {'Å':'A', 'Ä':'A'}
def spec_order(s):
return ''.join([spec_dict.get(ch, ch) for ch in s])
Python has a much better, faster and ...
How to remove items from a list while iterating?
...modify the old list in place. That's different from what you'd be doing by selective removal, as in @Lennart's suggestion -- it's faster, but if your list is accessed via multiple references the fact that you're just reseating one of the references and NOT altering the list object itself can lead to...
Why does Java's hashCode() in String use 31 as a multiplier?
... for 31 since 33 is not a prime:
Of the remaining
four, I'd probably select P(31), as it's the cheapest to calculate on a RISC
machine (because 31 is the difference of two powers of two). P(33) is
similarly cheap to calculate, but it's performance is marginally worse, and
33 is composit...