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Just what is an IntPtr exactly?
...d loads them into the computer's memory for me automatically.
So when I'm ready to bring the latest image into my program to work with, the camera driver provides me with an IntPtr to where to image is ALREADY stored in physical memory, so I don't have to waste time/resources creating another block...
Reference: What is variable scope, which variables are accessible from where and what are “undefined
...he value which is normally better to retrieve once. For
example, result of reading immutable file on server.
Tricks
Static variable exists only in a local function scope. It can not be
accessed outside of the function it has been defined in. So you may
be sure that it will keep its value...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
I was thinking of using TIMESTAMP to store the date+time, but I read that there is a limitation of year 2038 on it. Instead of asking my question in bulk, I preferred to break it up into small parts so that it is easy for novice users to understand as well. So my question(s):
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Appending a vector to a vector [duplicate]
...eing a member function, can. (It needs to figure out that the iterators to read from are random-access iterators in order to pre-calculate the sequence's length, but it would be a weak implementation which wouldn't do this.)
– sbi
Mar 31 '10 at 9:42
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Evil Mode best practice? [closed]
...ll modes I used (mostly editing, compilation, scratch and eshell) and even reading info/man/help is working without any problems.
Except that, I only found buffer switching odd as I used to do :b<0-9> instead :b-TAB-then-complete-name or :bn. Note however that Evil developers tries (in some c...
Which is more efficient: Multiple MySQL tables or one large table?
... of tables, getting data could require many joins. When the performance of reading from these tables was critical then procedures where created that could generate a flat table (i.e. a denormalized table) that would require no joins, calculations etc that reports could point to. These where then use...
Compiling dynamic HTML strings from database
...on were the two things I was missing. Now that this is working, guess I'll read up again on directives and $compile, to better understand what's going on under the hood.
– giraffe_sense
Aug 12 '13 at 18:29
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COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
... COUNT(1) looks like a magic number, one that is used when someone already have a grasp what is going on under-the-hood. It could led to abuse (i.e. if there's a malicious intention), since all of COUNT(0), COUNT(1), COUNT(2), COUNT(42) (you get the gist) are the same as COUNT(*), somebody co...
Can't pickle when using multiprocessing Pool.map()
...dard library method.
For example, Steven Bethard's contribution to this thread (towards the end of the thread) shows one perfectly workable approach to allow method pickling/unpickling via copy_reg.
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Is it possible to set a number to NaN or infinity?
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That will teach me not to jump in with a quip before reading the question over a second time!! Sorry! That said, it wouldn't hurt to say so all the same because it's an easy trap to fall into, NaN != NaN
– David Heffernan
Mar 25 '11 at 22...