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How can I add reflection to a C++ application?
... struct fields
{
static const int n = T::fields_n;
};
};
Now to iterate over the fields we use the visitor pattern. We create an MPL range from 0 to the number of fields, and access the field data at that index. Then it passes the field data on to the user-provided visitor:
struct...
How to check if DST (Daylight Saving Time) is in effect, and if so, the offset?
... over there. Suggest using UTC all the way, and manually check if the time now is within a certain DST range. Then it's just a matter of changing the normal time UTC offset by +1 to get DST.
– Kebman
Jun 27 '15 at 18:28
...
Why is require_once so bad to use?
...ret the code might even make it marginally slower but, that said, I don't know how thorough the internal method is. It might do extra work to ensure no duplicates.
– Oli
Oct 9 '08 at 9:37
...
How do I exit the Vim editor?
...MAND mode, where you can type short, few character commands, blindly. You know what you are doing; this isn't for amateurs.
When you want to actually edit text, you should go to INSERT mode with some one-character command:
i: go to INSERT in the place of the cursor
I: go to INSERT mode at the beg...
Is there a vr (vertical rule) in html?
I know there is a hr (horizontal rule) in html, but I don't believe there is a vr (vertical rule). Am I wrong and if not, why isn't there a vertical rule?
...
Best way to test exceptions with Assert to ensure they will be thrown
...
Now, 2017, you can do it easier with the new MSTest V2 Framework:
Assert.ThrowsException<Exception>(() => myClass.MyMethodWithError());
//async version
await Assert.ThrowsExceptionAsync<SomeException>(
() =...
Reduce, fold or scan (Left/Right)?
...rt with the RIGHT element and go backwards (from C to A) we'll notice that now the second argument to our binary operator accumulates the result (the operator is the same, we just switched the argument names to make their roles clear):
def add(x: String, res: String) = {
println(s"op: $x + $res ...
Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading
...e query string hacks below anymore since Cloudfront properly supports CORS now. See http://aws.amazon.com/blogs/aws/enhanced-cloudfront-customization/ and this answer for more info: https://stackoverflow.com/a/25305915/308315
OK, I finally got the fonts working using the config below with a littl...
Explain the concept of a stack frame in a nutshell
...he "frame," although this is likely architecture-dependent. The processor knows how many bytes are in each frame and moves the stack pointer accordingly as frames are pushed and popped off the stack.
EDIT:
There is a big difference between higher-level call stacks and the processor's call stack.
...
Positive Number to Negative Number in JavaScript?
...
@PhilipRollins i * -1 will work, always. i don't know how you tried, maybe you had some typo. But... what's wrong with i = -i instead of i = i * -1 (or i *= -1) to reverse positive to negative or negative to positive?
– Diego ZoracKy
A...