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What is LINQ and what does it do? [closed]
...eries against many targets (databases, in-memory objects, XML) with practically no consideration of the underlying way in which the query will be executed.
Let's start this exploration with the parts belonging to the .NET Framework (3.5).
LINQ To Objects - examine System.Linq.Enumerable for query...
Math - mapping numbers
...))
– Chris Chiasson
Mar 9 '17 at 18:32
To reverse the direction, the formula is ( (X-A)/(A-B) * (C-D) ) * -1 + D
...
Many-to-many relationship with the same model in rails?
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For reference: the Rails documentation on the subject. There's a section called “Many-to-many”, and of course the documentation on the class methods themselves.
Simplest scenario, uni-directional, no additional fields
This is the most compact in code.
I'll start out with this basic schema fo...
Why does the CheckBoxFor render an additional input tag, and how can I get the value using the FormC
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KyleMit
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answered May 3 '13 at 0:32
RyanJMcGowanRyanJMcGowan
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Debug vs. Release performance
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Partially true. In debug mode, the compiler emits debug symbols for all variables and compiles the code as is. In release mode, some optimizations are included:
unused variables do not get compiled at all
some loop variables are ...
Shortcut for creating single item list in C#
... M4NM4N
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6
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Convert Python dict into a dataframe
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The error here, is since calling the DataFrame constructor with scalar values (where it expects values to be a list/dict/... i.e. have multiple columns):
pd.DataFrame(d)
ValueError: If using all scalar values, you must must pass an index
You could ...
Implementing INotifyPropertyChanged - does a better way exist?
...er with C# 5:
protected bool SetField<T>(ref T field, T value,
[CallerMemberName] string propertyName = null)
{...}
which can be called like this:
set { SetField(ref name, value); }
with which the compiler will add the "Name" automatically.
C# 6.0 makes the implementation easier:
protec...
How to convert List to int[] in Java? [duplicate]
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Unfortunately, I don't believe there really is a better way of doing this due to the nature of Java's handling of primitive types, boxing, arrays and generics. In particular:
List<T>.toArray won't work because there's no conversion from Integer to int
You ...
Java 8 Lambda function that throws exception?
..., isn't it.
– aliopi
Aug 2 '17 at 9:32
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