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Curious null-coalescing operator custom implicit conversion behaviour
...ression Trees it turns (x ?? y) ?? z into nested lambdas, which ensures in-order evaluation without double evaluation. This is obviously not the approach taken by the C# 4.0 compiler. From what I can tell, section 6.1.4 is approached in a very strict manner in this particular code path and the tempo...
What are advantages of Artificial Neural Networks over Support Vector Machines? [closed]
... that "deep architectures" can represent "intelligent" behaviour/functions etc. more efficiently than "shallow architectures" like SVMs.
– alfa
Jul 25 '12 at 17:23
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IN vs OR in the SQL WHERE Clause
...search. I would imagine that OR evaluates them one by one in no particular order. So IN is faster in some circumstances.
The best way to know is to profile both on your database with your specific data to see which is faster.
I tried both on a MySQL with 1000000 rows. When the column is indexed t...
Inherit from a generic base class, apply a constraint, and implement an interface in C#
... You'll want to read section 10.1.
To answer your specific question, the order of things in a class declaration is:
attributes, in square brackets
modifiers ("public", "static", and so on)
"partial"
"class"
the class name
a comma-separated list of type parameter declarations inside angle bracket...
Resolve build errors due to circular dependency amongst classes
...symbols at runtime, which may or may not be handled well enough to trigger orderly shutdown or acceptably reduced functionality.
If A's code has template specialisations / "traits" for the old B, they won't take effect.
s...
Logical operators for boolean indexing in Pandas
... < 3 as df.A > (2 &
df.B) < 3, while the desired evaluation order is (df.A > 2) & (df.B <
3).
So, with this in mind, element wise logical AND can be implemented with the bitwise operator &:
df['A'] < 5
0 False
1 True
2 True
3 True
4 False
Name...
Install autoreconf on OS X v10.7 (Lion)?
...d into the right place), and you've the /usr/local/bin path added in your /etc/paths file.
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What is the use of the square brackets [] in sql statements?
...be surrounded by brackets if you want to use them as column / table / sp / etc. names. In MySQL angled single quotes ```` would be the equivalent of this.
– Baz Guvenkaya
Feb 9 '17 at 5:03
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Rails Model, View, Controller, and Helper: what goes where?
...king out whether they are logged in, whether they should see certain data, etc. In the end, the controller looks at requests and works out what data (Models) to show and what Views to render. If you are in doubt about whether code should go in the controller, then it probably shouldn't. Keep your co...
How do I make a request using HTTP basic authentication with PHP curl?
...ome of the low level details of using curl for http get, post, put, delete etc. which is what I'm doing by building my own php class to do this; I'm wondering if someone has already done this.
– blank
Jan 27 '10 at 7:39
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