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What is the Comonad typeclass in Haskell?
...monad in the comonad package (explanations of any other packages that provide a Comonad typeclass are also welcome). I've vaguely heard about Comonad, but all I really know about it is that is provides extract :: w a -> a , sort of a parallel to Monad's return :: a -> m a .
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PL/SQL, how to escape single quote in a string?
...uld help with escaping ticks in strings.
Here's the simplest method from said post:
The most simple and most used way is to use a single quotation mark with two single >quotation marks in both sides.
SELECT 'test single quote''' from dual;
The output of the above statement would be:
test single ...
LINQ Orderby Descending Query
...ment should work. Is t.Delivery.SubmissionDate actually populated with valid dates?
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Ruby on Rails patterns - decorator vs presenter
...e functionality to this entity". A presenter is more of a "let's build a bridge between the model/backend and view". The presenter pattern has several interpretations.
Decorators are generic/general purpose. Presenters have a narrower range of responsibilities/uses. Decorators are used across domai...
Loop through Map in Groovy?
...ith a closure:
def map = [
'iPhone':'iWebOS',
'Android':'2.3.3',
'Nokia':'Symbian',
'Windows':'WM8'
]
map.each{ k, v -> println "${k}:${v}" }
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Func with out parameter
... cannot be marked co- or contravariant and must remain "invariant". So consider public delegate V MyDelegate<in T, U, out V>(T input, out U output); if you use C# 4 or later.
– Jeppe Stig Nielsen
Apr 22 '14 at 10:04
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how do I strip white space when grabbing text with jQuery?
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One thing to be wary of is that IE doesn't consider non-breaking spaces (&nbsp;, &#160;, &#xA0;, \xA0, \u00A0, etc...) as white-space, so /[\s\xA0]+/g might be more reliable for replacing all white-space.
– travis
Jan 27 ...
Is there a good way to attach JavaScript objects to HTML elements?
...ions of JavaScript and is totally reliable.
var div= document.getElementById('nav');
div.potato= ['lemons', 3];
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Visual Studio jump to next error shortcut?
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definitely more useful. and beside F8 above is just decreasing my screen brightness.
– victor n.
Sep 30 '17 at 1:17
3
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UIPopovercontroller dealloc reached while popover is still visible
I assure you that I did look for an answer in SO for my question but none of them were helpful. Here I got a simple code that should present a UIImagePickerController within a UIPopoverController :
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