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Why can't I forward-declare a class in a namespace using double colons?
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You're getting correct answers, let me just try re-wording:
class Namespace::Class;
Why do I have to do this?
You have to do this because the term Namespace::Class is telling the compiler:
...OK, compiler. Go find the
namespace named Namespace, and within
that...
PDO's query vs execute
...mpirical evidence. Yet some people will take it for granted and spread the word further.
– Your Common Sense
Oct 8 '16 at 8:25
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How does a garbage collector avoid an infinite loop here?
...killing the program. It after five second the program terminates (in other words, the garbage collector gives up and simply will free all memory without taking finalizers into account).
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impr...
SAML: Why is the certificate within the Signature?
...to verify that the content of the SAML response matches the key - in other words - that response definitely came from someone who has the matching private key to the public key in the message, and the response hasn't been tampered with.
I don't know what tech you're working with, but in .Net you ca...
JavaScript and Threads
...e support info.
The following was the state of support circa 2009.
The words you want to google for are JavaScript Worker Threads
Apart from from Gears there's nothing available right now, but there's plenty of talk about how to implement this so I guess watch this question as the answer will n...
JavaScript ternary operator example with functions
...educe four lines of code into one without impacting readability. The only word of advice I would give you is to avoid nesting multiple ternary statements on the same line (that way lies madness!)
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With arrays, why is it the case that a[5] == 5[a]?
... It's not elementary that *(10 + (int *)13) != *((int *)10 + 13). In other words, there's more going on here than elementary school arithmetic. The commutativity relies critically on the compiler recognizing which operand is a pointer (and to what size of object). To put it another way, (1 apple + 2...
What are the “standard unambiguous date” formats for string-to-date conversion in R?
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In other words, is there a better solution than needing to specify the format?
Yes, there is now (ie in late 2016), thanks to anytime::anydate from the anytime package.
See the following for some examples from above:
R> anydat...
Best ways to teach a beginner to program? [closed]
...nd quicksort). This is where you learn why "segmentation fault" is a curse word. This is where you download the source code of the Linux kernel and gaze into the Abyss. Start by writing a circular buffer and a stack for string manipulation. Then work your way up.
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Should you choose the MONEY or DECIMAL(x,y) datatypes in SQL Server?
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"Never" is a strong word. "Money" is useful for casting results to that type for display to the user in a culture-sensitive way, but you're right that it's very bad to use for the calculations itself.
– Joel Coehoorn
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