大约有 45,000 项符合查询结果（耗时：0.0598秒） [XML]
When and why should I use fragments in Android applications? [duplicate]
...ot.
– Claudio Ferraro
Dec 22 '11 at 10:10
1
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Understanding the difference between __getattr__ and __getattribute__
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answered Nov 28 '10 at 6:55
pyfuncpyfunc
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How to DROP multiple columns with a single ALTER TABLE statement in SQL Server?
...p-statements:
mysql> alter table test2 drop column (c1,c2,c3);
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(c1,c2,c3)' at line 1
mysql> alter table test2 drop column c1,c2,c3;
ERROR ...
Too many 'if' statements?
...two)
{
return (int)(0xF9F66090L >> (2*(one*4 + two)))%4;
}
More bitwise variant:
This makes use of the fact everything is a multiple of 2
public int fightMath(int one,int two)
{
return (0xF9F66090 >> ((one << 3) | (two << 1))) & 0x3;
}
The Origin of the Magic ...
Fast stable sorting algorithm implementation in javascript
...more about this technique and how to implement it: http://blog.vjeux.com/2010/javascript/javascript-sorting-table.html
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How can I check whether a numpy array is empty or not?
...nswered Jun 22 '19 at 11:44
user10178557user10178557
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Which are more performant, CTE or temporary tables?
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answered Mar 30 '09 at 19:10
gbngbn
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Why does Python print unicode characters when the default encoding is ASCII?
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Thanks to bits and pieces from various replies, I think we can stitch up an explanation.
By trying to print an unicode string, u'\xe9', Python implicitly try to encode that string using the encoding scheme currently stored in sys.std...
vs in Generics
...ance in generic interfaces was added to C# and VB.NET (in .NET 4 with VS 2010), this was a compile time error.
After .NET 4, IEnumerable<T> was marked covariant, and became IEnumerable<out T>. Since IEnumerable<out T> only uses the elements within it, and never adds/changes them,...
`testl` eax against eax?
...x, eax will set the zero flag if eax is zero, the sign-flag if the highest bit set and some other flags as well.
The Jump if Equal (je) instruction jumps if the zero flag is set.
You can translate the code to a more readable code like this:
cmp eax, 0
je somewhere
That has the same functionali...