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What is (functional) reactive programming?
...n terms as Thomas K does in another answer (graphs, nodes, edges, firing, execution, etc).
There are many possible implementation styles, but no implementation says what FRP is.
I do resonate with Laurence G's simple description that FRP is about "datatypes that represent a value 'over time' ".
Con...
What is a Y-combinator? [closed]
...
If you're ready for a long read, Mike Vanier has a great explanation. Long story short, it allows you to implement recursion in a language that doesn't necessarily support it natively.
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Scala type programming resources
...digms in type-level programming: "object-oriented" and "functional". Most examples linked to from here follow the object-oriented paradigm.
A good, fairly simple example of type-level programming in the object-oriented paradigm can be found in apocalisp's implementation of the lambda calculus, repl...
How to strip all non-alphabetic characters from string in SQL Server?
...eepValues as varchar(50)
Set @KeepValues = '%[^a-z]%'
While PatIndex(@KeepValues, @Temp) > 0
Set @Temp = Stuff(@Temp, PatIndex(@KeepValues, @Temp), 1, '')
Return @Temp
End
Call it like this:
Select dbo.RemoveNonAlphaCharacters('abc1234def5678ghi90jkl')
Once you understan...
How to make my custom type to work with “range-based for loops”?
...ion of this defect report.
The way to make a for(:) loop work on your type X is now one of two ways:
Create member X::begin() and X::end() that return something that acts like an iterator
Create a free function begin(X&) and end(X&) that return something that acts like an iterator, in the ...
sort object properties and JSON.stringify
... {
var flatObject = flattenObject(ob[i]);
for (var x in flatObject) {
if (!flatObject.hasOwnProperty(x)) continue;
toReturn[i + '.' + x] = flatObject[x];
}
} else {
toReturn[i] = ob[i];
}
}
retur...
What's the syntax for mod in java
As an example in pseudocode:
17 Answers
17
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Null coalescing in powershell
...shell.
Null Coalescing
$null ?? 100 # Result is 100
"Evaluated" ?? (Expensive-Operation "Not Evaluated") # Right side here is not evaluated
Null Conditional Assignment
$x = $null
$x ??= 100 # $x is now 100
$x ??= 200 # $x remains 100
Ternary Operator
$true ? "this value returne...
How to watch for array changes?
...way to be notified when an array is modified using push, pop, shift or index-based assignment? I want something that would fire an event that I could handle.
...
Generate a random point within a circle (uniformly)
...t uniformly in a triangle ABC, where |AB|=|BC|? Let's make this easier by extending to a parallelogram ABCD. It's easy to generate points uniformly in ABCD. We uniformly pick a random point X on AB and Y on BC and choose Z such that XBYZ is a parallelogram. To get a uniformly chosen point in the ori...