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Why is argc not a constant?
...this case, history is a factor. C defined these inputs as "not constant", and compatibility with (a good portion of) existing C code was an early goal of C++.
Some UNIX APIs, such as getopt, actually do manipulate argv[], so it can't be made const for that reason also.
(Aside: Interestingly, al...
With arrays, why is it the case that a[5] == 5[a]?
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The C standard defines the [] operator as follows:
a[b] == *(a + b)
Therefore a[5] will evaluate to:
*(a + 5)
and 5[a] will evaluate to:
*(5 + a)
a is a pointer to the first element of the array. a[5] is the value that's 5 el...
How are msys, msys2, and msysgit related to each other?
.... (It's entirely possible I just don't know what to look for.) I do understand that MSYS is a minimal port of Linux tools to support development using MinGW, but I'm not clear on the relationship between the three of them or the teams that developed/maintain them.
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Rails 3: Get Random Record
So, I've found several examples for finding a random record in Rails 2 -- the preferred method seems to be:
14 Answers
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What does the term “porcelain” mean in Git?
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"Porcelain" is the material from which toilets are usually made (and sometimes other fixtures such as washbasins). This is distinct from "plumbing" (the actual pipes and drains), where the porcelain provides a more user-friendly interface to the plumbing.
Git uses this terminology in anal...
Why do we have map, fmap and liftM?
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map exists to simplify operations on lists and for historical reasons (see What's the point of map in Haskell, when there is fmap?).
You might ask why we need a separate map function. Why not just do away with the current
list-only map function, and rename fmap...
TypeScript and field initializers
...ways have come up. Please see the other answers below that have more votes and a better answer. I cannot remove this answer since it's marked as accepted.
Old answer
There is an issue on the TypeScript codeplex that describes this: Support for object initializers.
As stated, you can already do ...
How do I add a delay in a JavaScript loop?
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The setTimeout() function is non-blocking and will return immediately. Therefore your loop will iterate very quickly and it will initiate 3-second timeout triggers one after the other in quick succession. That is why your first alerts pops up after 3 seconds, and all...
@Media min-width & max-width
...ult CSS for the older browsers, as older browsers including i.e. 5.5, 6, 7 and 8. Can't read @media. When I use @media I use it like this:
<style type="text/css">
/* default styles here for older browsers.
I tend to go for a 600px - 960px width max but using percentages
*/
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C dynamically growing array
I have a program that reads a "raw" list of in-game entities, and I intend to make an array holding an index number (int) of an indeterminate number of entities, for processing various things. I would like to avoid using too much memory or CPU for keeping such indexes...
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