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Extract a number from a string (JavaScript)
... return 'num = str.replace(/' + res[i].source + '/g, "")';
return 'no idea';
};
function update() {
$ = function(x) { return document.getElementById(x) };
var re = getre($('str').value, $('num').value);
$('re').innerHTML = 'Numex speaks: <code>' + re + '</code>';
}
<...
Mockito How to mock only the call of a method of the superclass
...h a findAll() method, and a subclass DAO that overrides the base method by calling super.findAll() and then sorting the result. The subclass is substitutable into all contexts accepting the superclass. Am I misunderstanding your meaning?
– user41871
Jul 8 '11 a...
jQuery UI DatePicker - Change Date Format
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inside the jQuery script code just paste the code.
$( ".selector" ).datepicker({ dateFormat: 'yy-mm-dd' });
this should work.
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What's the point of map in Haskell, when there is fmap?
...generalized to cover Functor in Haskell 1.3. I.e., in Haskell 1.3 fmap was called map. This change was then reverted in Haskell 1.4 and fmap was introduced. The reason for this change was pedagogical; when teaching Haskell to beginners the very general type of map made error messages more difficult ...
Implementing MVC with Windows Forms
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This is an implementation of the MVP variant called PassiveView. In the passive view the view should not choice his presenter. For a similar example (but with a view REALLY passive) check this sample danieleteti.it/?p=221 (example in Delphi language)
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Padding is invalid and cannot be removed?
...s invalid and cannot be removed
If you are using some algorithm to dynamically generate keys that will not work. They need to be the same for both encryption and decryption. One common way is to have the caller provide the keys in the constructor of the encryption methods class, to prevent the enc...
Rails: call another controller action from a controller
I need to call the create action in controller A, from controller B.
9 Answers
9
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PostgreSQL return result set as JSON array?
... up
The json_agg function produces this result out of the box. It automatically figures out how to convert its input into JSON and aggregates it into an array.
SELECT json_agg(t) FROM t
There is no jsonb (introduced in 9.4) version of json_agg. You can either aggregate the rows into an array and...
Does using “new” on a struct allocate it on the heap or stack?
... different situations with the new operator on value types: you can either call a parameterless constructor (e.g. new Guid()) or a parameterful constructor (e.g. new Guid(someString)). These generate significantly different IL. To understand why, you need to compare the C# and CLI specs: according t...
new keyword in method signature
...();
public new void Two();
}
B b = new B();
A a = b as A;
a.One(); // Calls implementation in B
a.Two(); // Calls implementation in A
b.One(); // Calls implementation in B
b.Two(); // Calls implementation in B
Override can only be used in very specific cases. From MSDN:
You cannot overri...