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Clone contents of a GitHub repository (without the folder itself)
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edited Jun 3 '11 at 8:31
answered Jun 3 '11 at 8:18
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How to define two fields “unique” as couple
... exactly what you want.
For example:
class MyModel(models.Model):
field1 = models.CharField(max_length=50)
field2 = models.CharField(max_length=50)
class Meta:
unique_together = ('field1', 'field2',)
And in your case:
class Volume(models.Model):
id = models.AutoField(primary_key=Tr...
Can I simultaneously declare and assign a variable in VBA?
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Hint (summary of other answers/comments): Works with objects too (Excel 2010):
Dim ws As Worksheet: Set ws = ActiveWorkbook.Worksheets("Sheet1")
Dim ws2 As New Worksheet: ws2.Name = "test"
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Selectively revert or checkout changes to a file in Git?
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answered Apr 21 '09 at 10:56
CB BaileyCB Bailey
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Normalize data in pandas
...In [92]: df
Out[92]:
a b c d
A -0.488816 0.863769 4.325608 -4.721202
B -11.937097 2.993993 -12.916784 -1.086236
C -5.569493 4.672679 -2.168464 -9.315900
D 8.892368 0.932785 4.535396 0.598124
In [93]: df_norm = (df - df.mean()) / (df.max() - df.min()...
Why do people use __(double underscore) so much in C++
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127
From Programming in C++, Rules and Recommendations :
The use of two underscores (`__') in ...
Linq to SQL how to do “where [column] in (list of values)”
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161
Use
where list.Contains(item.Property)
Or in your case:
var foo = from codeData in channel...
Can TCP and UDP sockets use the same port?
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112
Yes, you can use the same port number for both TCP and UDP. Many protocols already do this, f...
What is “2's Complement”?
...positive integers, start counting up, with a maximum of 2(number of bits - 1)-1.
for negative integers, do exactly the same thing, but switch the role of 0's and 1's (so instead of starting with 0000, start with 1111 - that's the "complement" part).
Let's try it with a mini-byte of 4 bits (we'll ca...