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Pros and cons of Java rules engines [closed]
...t
system might involve code to calculate
a discount:
if (product.quantity > 100 && product.quantity < 500) {
product.discount = 2;
} else if (product.quantity >= 500 && product.quantity < 2000) {
product.discount = 5;
} else if (product.quantity >= 2000) {
p...
Attempt to present UIViewController on UIViewController whose view is not in the window hierarchy
... I had an issue where I was attempting to present a modal view controller within the viewDidLoad method. The solution for me was to move this call to the viewDidAppear: method.
My presumption is that the view controller's view is not in the window's view hierarchy at the point that it has been load...
Is it possible to set UIView border properties from interface builder?
Is it possible to control UIView border properties (color, thickness, etc...) directly from interface builder or I can only do it programmatically?
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When is a CDATA section necessary within a script tag?
....g. when an XHTML page is interpreted as XML) and you want to be able to write literal i<10 and a && b instead of i&lt;10 and a &amp;&amp; b, as XHTML will parse the JavaScript code as parsed character data as opposed to character data by default. This is not an issue with sc...
Serializing an object as UTF-8 XML in .NET
Proper object disposal removed for brevity but I'm shocked if this is the simplest way to encode an object as UTF-8 in memory. There has to be an easier way doesn't there?
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Find XOR of all numbers in a given range
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This is a pretty clever solution -- it exploits the fact that there is a pattern of results in the running XORs. The f() function calculates the XOR total run from [0, a]. Take a look at this table for 4-bit numbers:
0000 <- 0 [a]
0001 <- 1 [1]
0010 &l...
Java: how do I get a class literal from a generic type?
Typically, I've seen people use the class literal like this:
8 Answers
8
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Thou shalt not inherit from std::vector
...ficult to confess, but I do have a strong temptation at the moment to inherit from std::vector .
13 Answers
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What is the difference between the different methods of putting JavaScript code in an ?
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I quite enjoy Matt Kruse's Javascript Best Practices article. In it, he states that using the href section to execute JavaScript code is a bad idea. Even though you have stated that your users must have JavaScript enabled, ther...
What is the difference between __init__ and __call__?
I want to know the difference between __init__ and __call__ methods.
13 Answers
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