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Difference between Visual Basic 6.0 and VBA
... that this is outdated. VBA has been updated to VBA 7, with support for 64-bits data types (LongLong, LongPtr) and more changes. VB is stuck at version 6, so it doesn't support these new features. This answer discusses more changes. In short, there are now things VB can't do, but VBA can.
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Where does gcc look for C and C++ header files?
... Drew DormannDrew Dormann
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Understanding MongoDB BSON Document size limit
...then no problem. But in terms of pure efficiency, you do not want useless bits to take up memory space if you can avoid it (and that goes for RDBMS as well).
– AlexGad
Dec 24 '11 at 16:52
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R.exe, Rcmd.exe, Rscript.exe and Rterm.exe: what's the difference?
...efore littler and Rscript.exe, and similarly lingering from old docs and habits..
Rscript.exe is your friend for batch scripts; use it.
For everything else, there's R.exe.
Other than that, as Marek hinted, the reference manual is the wrong one among the six available manuals. Try the Introduction ...
Removing whitespace between HTML elements when using line breaks
...e approach. Although, it can lead to sometimes wondering why text isn't showing up if I subsequently forget to define a font size for child elements.
– Astrotim
Jun 24 '13 at 9:12
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Pandas count(distinct) equivalent
...ARMONTH
201301 2 1 0
201302 1 2 1
After a little bit modify ,yield the result
pd.crosstab(df.YEARMONTH,df.CLIENTCODE).ne(0).sum(1)
Out[197]:
YEARMONTH
201301 2
201302 3
dtype: int64
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...e size of 64 bytes. Each line can hold 8 of the elements in the matrix (64-bit int).
The critical stride would be 2048 bytes, which correspond to 4 rows of the matrix (which is continuous in memory).
Assume we're processing row 28. We're attempting to take the elements of this row and swap them ...
MFC 获取当前时间的几种方法总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...tm_minute = curTime.wMinute;
tmTime.tm_second = curTime.wSecond;
__time64_t curTime_64t = _mktime64(&tmTime);
struct tm st;
st.tm_year = atoi(strTime.substr(0, 4).c_str())-1900;
st.tm_mon = atoi(strTime.substr(5, 2).c_str());
st.tm_mday = atoi(strTime.substr(8, 2).c_str());
st.tm_hour = a...
Tools for JPEG optimization? [closed]
...hey recompress the image at reducing quality factors perhaps with a little bit of filtering and they use some quality metric to decide when to stop.
– koan
May 4 '17 at 12:07
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How can I run MongoDB as a Windows service?
...ngod.lock file. This still appears to be an issue with 1.8.1 running on 64-bit.
– SethO
Apr 25 '11 at 15:04
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