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foldl versus foldr behavior with infinite lists
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How folds differ seems to be a frequent source of confusion, so here's a more general overview:
Consider folding a list of n values [x1, x2, x3, x4 ... xn ] with some function f and seed z.
foldl is:
Left associative: f ( ... (f (f (f (f z x1) x2) x3) x4) ...) xn
Tail recursive: It iterates th...
Android: ListView elements with multiple clickable buttons
... how exacly did you get the curItem.url from query, would you be more specific?
– oratis
Dec 7 '11 at 3:18
1
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Unable to generate an explicit migration in entity framework
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This error can also mean that the migrations are not recognized anymore. This happened to me after having changed the value of the ContextKey in Migrations.Configuration.
The solution was simply to update the ContextKey in the database table "__MigrationHistory" (or revert the value in the C...
How does std::move() transfer values into RValues?
...ne works with lvalues.
To explain why do we need remove_reference a bit more, let's try this function
template <typename T>
T&& wanna_be_move(T&& arg)
{
return static_cast<T&&>(arg);
}
and instantiate it with lvalue.
// wanna_be_move [with T = Object&...
How do I test if a string is empty in Objective-C?
...d also omit == 0 part and add a negation in front: ![string length]. Seems more clean.
– damirstuhec
Aug 31 '14 at 20:29
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show 8 more comme...
How to pass all arguments passed to my bash script to a function of mine? [duplicate]
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Read more on why it is important to have the double " around here: stackoverflow.com/a/4824637/4575793
– Cadoiz
Jul 13 '19 at 15:54
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What's the point of 'const' in the Haskell Prelude?
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Ahh so it's more of a 'function generator' - I use it with one argument, and it gives me a function (taking one argument) that always returns a constant value. So map (const 42) [1..5] results in [42, 42, 42, 42, 42].
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What is the boundary in multipart/form-data?
...ng like '&' is enough to separate the variables but you need something more unique to separate the payloads within the payload.
– user2483724
Mar 18 '14 at 18:30
1
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How to serialize an object into a string
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