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How can I detect if this dictionary key exists in C#?
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edited May 13 '10 at 20:38
Adam Tuttle
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Convert hex string to int in Python
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1130
Without the 0x prefix, you need to specify the base explicitly, otherwise there's no way to tell...
Why does X[Y] join of data.tables not allow a full outer join, or a left join?
...context of each group. Let's say foo is in X, and bar is in Y (along with 20 other columns in Y). Isn't X[Y,sum(foo*bar)] quicker to program and quicker to run than a merge of everything wastefully followed by a subset?
If you want a left outer join of X[Y]
le <- Y[X]
mallx <- merge(X, ...
PHP function to build query string from array
... Ry-♦
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answered Dec 30 '08 at 16:52
TJ LTJ L
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How can I tell PyCharm what type a parameter is expected to be?
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If you are using Python 3.0 or later, you can also use annotations on functions and parameters. PyCharm will interpret these as the type the arguments or return values are expected to have:
class King:
def repress(self, peasant: Person) -> boo...
Replacing Pandas or Numpy Nan with a None to use with MysqlDB
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@bogatron has it right, you can use where, it's worth noting that you can do this natively in p...
Can the C# interactive window interact with my code?
In Visual Studio 2015 or later, I can open the 'C# interactive window', and run code:
5 Answers
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How can I force WebKit to redraw/repaint to propagate style changes?
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answered Aug 15 '10 at 0:06
danortondanorton
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Child with max-height: 100% overflows parent
...explicit height for the parent, then the child knows it has to be at most 100% of that explicit height. That allows it to be constrained to the parent's height (while still maintaining its aspect ratio).
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Abstract methods in Python [duplicate]
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edited Dec 8 '10 at 0:32
answered Dec 8 '10 at 0:02
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