大约有 47,000 项符合查询结果（耗时：0.0684秒） [XML]
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
... using and Apple's change at
different times to the ports and have been know to be years behind
updates in some projects
Can you give a reference showing that macports overwrites native OS X
packages? As far as I can tell, all macports installation happens in
/opt/local
Perhaps I shou...
How to reset postgres' primary key sequence when it falls out of sync?
...quence tbl_tbl_id_seq (which is the default automatic name).
If you don't know the name of the attached sequence (which doesn't have to be in default form), use pg_get_serial_sequence():
SELECT setval(pg_get_serial_sequence('tbl', 'tbl_id'), max(tbl_id)) FROM tbl;
There is no off-by-one error here....
General suggestions for debugging in R
...ou source() a .R file and it returns an error at line #n, but you need to know what function is located at line #n.
setBreakpoint() takes a source file name and line number and sets a breakpoint there
The codetools package, and particularly its checkUsage function can be particularly helpful in q...
Python threading.timer - repeat function every 'n' seconds
....5 seconds and be able to start and stop and reset the timer. I'm not too knowledgeable of how Python threads work and am having difficulties with the python timer.
...
Does Haskell require a garbage collector?
...y unnecessary.
jhc actually uses a sophisticated form of escape analysis known as region inference. Consider
f :: Integer -> (Integer, Integer)
f x = let x2 = x * x in (x2, x2+1)
g :: Integer -> Integer
g x = case f x of (y, z) -> y + z
In this case, a simplistic escape analysis would ...
What is the correct answer for cout
...nation. With the calls you expained it would be undefined behaviour. But now, I have one more question (may be siller one, and I missing something basic and thinking loud) How did you deduce that the global version of std::operator<<() would be called instead of ostream::operator<<() ...
Calculate the median of a billion numbers
...
Ah, my brain has just kicked into gear, I have a sensible suggestion now. Probably too late if this had been an interview, but never mind:
Machine 1 shall be called the "control machine", and for the sake of argument either it starts with all the data, and sends it in equal parcels to the oth...
Android: How can I pass parameters to AsyncTask's onPreExecute()?
...
This is quite exactly what I did now. I still need a member variable but in the AsyncTask and not the outer class if that's what you mean. This is what I did: private class MyAsyncTask extends AsyncTask<Void, Void, Void> { private boolean showLoad...
Activate a virtualenv via fabric as deploy user
...
Right now, you can do what I do, which is kludgy but works perfectly well* (this usage assumes you're using virtualenvwrapper -- which you should be -- but you can easily substitute in the rather longer 'source' call you mentioned,...
Regex: match everything but specific pattern
... example "ing packages <!--and web page<!-- asdasasdas--> editors now use--> Lorem Ipsum"
– MonsterMMORPG
Jan 31 at 13:09
...