大约有 40,000 项符合查询结果（耗时：0.0315秒） [XML]
What are the mathematical/computational principles behind this game?
...ere are geometries with Q points, then Q = n^2 + n + 1 and n is called the order of the geometry.
There are n+1 points in every line.
From every point, pass exactly n+1 lines.
Total number of lines is also Q.
And finally, if n is prime, then there does exists a geometry of order n.
What does tha...
Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
...ok.author
get_author.short_description = 'Author'
get_author.admin_order_field = 'book__author'
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Getting unique items from a list [duplicate]
...
A HashSet won't maintain any ordering, which may or may not be an issue for the OP.
– LukeH
Sep 7 '09 at 9:13
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How to sort objects by multiple keys in Python?
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print item
Try it with either column negated. You will see the sort order reverse.
Next: change it so it does not use extra class....
2016-01-17
Taking my inspiration from this answer What is the best way to get the first item from an iterable matching a condition?, I shortened the code:...
What is the purpose of setting a key in data.table?
...set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables.
2 ...
How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
... that can help with most deadlocks is sorting the operations in a specific order.
You get a deadlock when two transactions are trying to lock two locks at opposite orders, ie:
connection 1: locks key(1), locks key(2);
connection 2: locks key(2), locks key(1);
If both run at the same time, connecti...
Multiple Order By with LINQ [duplicate]
...You can use the ThenBy and ThenByDescending extension methods:
foobarList.OrderBy(x => x.Foo).ThenBy( x => x.Bar)
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How can I reverse the order of lines in a file?
I'd like to reverse the order of lines in a text file (or stdin), preserving the contents of each line.
25 Answers
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What is the difference between Numpy's array() and asarray() functions?
...ut will be returned uncopied iff it's a compatible ndarray in contiguous C order (copy=False, order='C').
asfortranarray: The input will be returned uncopied iff it's a compatible ndarray in contiguous Fortran order (copy=False, order='F').
require: The input will be returned uncopied iff it's compa...
How do you do a limit query in JPQL or HQL?
... = entityManager
.createQuery(
"select p " +
"from Post p " +
"order by p.createdOn ")
.setFirstResult(10)
.setMaxResults(10)
.getResultList();
The LimitHandler abstraction
The Hibernate LimitHandler defines the database-specific pagination logic, and as illustrated by the following d...