大约有 31,840 项符合查询结果（耗时：0.0309秒） [XML]
How to detect a Christmas Tree? [closed]
...with many of the other answers, I assumed that the Christmas tree would be one of the brighter objects in the scene, so the first threshold is just a simple monochrome brightness test; any pixels with values above 220 on a 0-255 scale (where black is 0 and white is 255) are saved to a binary black-a...
Good reasons NOT to use a relational database?
...great if you also explained the drawbacks of each choice, otherwise how is one supposed to choose? Thanks,
– Sklivvz
Sep 28 '08 at 10:31
4
...
What is a servicebus and when do I need one?
...s. You can use it also for client-server communication to give you durable one-way messaging as well as for the server to push notifications back to the client.
Specifically, you'll find NServiceBus to be quite lightweight and easy to use once you make peace with its use of queuing technology - you...
How do I round to the nearest 0.5?
...41,823rd, I can't think of a single use case where you would care if it's "one billion one and a half" or "one billion one" - if that's really a problem then there is something inherently flawed with the ranking scheme :)
– John Rasch
Aug 25 '09 at 18:52
...
SQL “between” not inclusive
...o dates. The second date is interpreted as midnight when the day starts.
One way to fix this is:
SELECT *
FROM Cases
WHERE cast(created_at as date) BETWEEN '2013-05-01' AND '2013-05-01'
Another way to fix it is with explicit binary comparisons
SELECT *
FROM Cases
WHERE created_at >= '2013-0...
How is Docker different from a virtual machine?
... you can have a read only part and a write part which are merged together. One could have the common parts of the operating system as read only (and shared amongst all of your containers) and then give each container its own mount for writing.
So, let's say you have a 1 GB container image; if you ...
Who is “us” and who is “them” according to Git?
... "ours" branch being the upstream branch and the "theirs" branch being the one being rebased. But I agree it's, well, "extremely unhelpful" seems like a polite way to put it. I'd much rather have the branches labeled by some other words than "us/ours" and "them/theirs", perhaps by branch-name for ...
How can one see content of stack with GDB?
...
You need to use gdb's memory-display commands. The basic one is x, for examine. There's an example on the linked-to page that uses
gdb> x/4xw $sp
to print "four words (w ) of memory above the stack pointer (here, $sp) in hexadecimal (x)". The quotation is slightly paraphrased...
How does the compilation/linking process work?
...of the syntax of C++, which is why it must be used with care.
It works on one C++ source file at a time by replacing #include directives with the content of the respective files (which is usually just declarations), doing replacement of macros (#define), and selecting different portions of text dep...
What does `m_` variable prefix mean?
...ssumed to be getName/setName, so getM_name is bad and you need handle them one by one.
– Leon
Jan 11 '19 at 5:53
Thank...