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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...r(**kwargs):
for a in kwargs:
print(a, kwargs[a])
bar(name='one', age=27)
# age 27
# name one
Both idioms can be mixed with normal arguments to allow a set of fixed and some variable arguments:
def foo(kind, *args, **kwargs):
pass
It is also possible to use this the other way ...
Do regular expressions from the re module support word boundaries (\b)?
...two'
>>> k = re.compile(r'\b%s\b' % word, re.I)
>>> x = 'one two three'
>>> y = k.search( x)
>>> y
<_sre.SRE_Match object at 0x100418850>
Also forgot to mention, you should be using raw strings in your code
>>> x = 'one two three'
>>> y ...
C# generic type constraint for everything nullable
... if (type.IsClass)
return;
throw new InvalidOperationException("Type is not nullable or reference type.");
}
public bool IsNull()
{
return item == null;
}
}
Then the following code compiles, but the last one (foo3) throws an exception in the constru...
What is an xs:NCName type and when should it be used?
I ran one of my xml files through a schema generator and everything generated was what was expected, with the exception of one node:
...
Using Tint color on UIImageView
... saved me lots of time. (corrected typo)
– Alex Zavatone
Aug 20 '15 at 18:37
47
You can select im...
convert String to DateTime
... thanks. Missed, that I could give it my own format. Here's the working one: '%d/%b/%Y:%H:%M:%S'
– SkaveRat
Feb 4 '10 at 15:56
1
...
Trim last character from a string
... more
EDIT:
What I've noticed in this type of questions that quite everyone suggest to remove the last char of given string. But this does not fulfill the definition of Trim method.
Trim - Removes all occurrences of
white space characters from the
beginning and end of this instance.
MS...
SQL left join vs multiple tables on FROM line?
...CompanyID
AND Department.ID = Employee.DepartmentID
Note that the last one there is an inner join, in order to fulfill the criteria that you only want departments with people.
Ok, so what happens now. Well, the problem is, it depends on the database engine, the query optimizer, indexes, and tab...
Android: HTTP communication should use “Accept-Encoding: gzip”
...great and very helpful answer with all the details I needed. Thanks a lot. One comment: instead of addHeader I used setHeader. From what I understand this overwrites the existing "Accept-Encoding" if there is one. Not sure which approach is the right/better one. To overwrite an existing header to ma...
Make virtualenv inherit specific packages from your global site-packages
...virtualenv's package directory, so those packages should shadow the global ones.
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