大约有 48,000 项符合查询结果（耗时：0.0703秒） [XML]
How does this print “hello world”?
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+150
The number 4946144450195624 fits 64 bits, its binary representation is:
10001100100100111110111111110111101100011000010101000
Th...
What does the WPF star do (Width=“100*”)
...r Height="*" means proportional sizing.
For example: to give 30% to column 1 and 70% to column 2 -
<ColumnDefinition Width="3*" />
<ColumnDefinition Width="7*" />
And likewise for rows -
<RowDefinition Height="3*" />
<RowDefinition Height="7*" />
The numbers do not ha...
Get the value of an instance variable given its name
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179
The most idiomatic way to achieve this is:
some_object.instance_variable_get("@#{name}")
Th...
E731 do not assign a lambda expression, use a def
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edited Mar 4 at 17:50
answered Jul 29 '14 at 7:31
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How do I use vi keys in ipython under *nix?
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166
In case someone's wandering in here recently, IPython 5.0 switched from readline to prompt_too...
How can I limit a “Run Script” build phase to my release configuration?
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edited Mar 3 '11 at 20:30
answered Aug 31 '10 at 23:55
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sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and t
...ach one character long.
>>> len(img)
74
>>> len((img,))
1
If you find it easier to read, you can also use a list literal:
cursor.execute('INSERT INTO images VALUES(?)', [img])
share
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Can PostgreSQL index array columns?
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184
Yes you can index an array, but you have to use the array operators and the GIN-index type.
E...
Difference between wait and sleep
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edited Oct 9 '17 at 13:14
arc
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answer...
Remove multiple attributes with jQuery's removeAttr
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177
Yes :
.removeAttr('height align style')
From the documentation :
as of version 1.7, it ...