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Why do we need extern “C”{ #include } in C++?
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123
C and C++ are superficially similar, but each compiles into a very different set of code. When...
Benefit of using Parcelable instead of serializing object
...tures for live objects noted here: developer.android.com/reference/android/os/Parcel.html
– mikebabcock
Sep 26 '12 at 16:06
2
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Standard concise way to copy a file in Java?
...FileUtils.copyFile(); it handles all the heavy lifting for you.
And as a postscript, note that recent versions of FileUtils (such as the 2.0.1 release) have added the use of NIO for copying files; NIO can significantly increase file-copying performance, in a large part because the NIO routines defe...
What is the correct way of using C++11's range-based for?
...t() const
{
return m_data;
}
private:
int m_data;
};
ostream& operator<<(ostream& os, const X& x)
{
os << x.Get();
return os;
}
If we use the above for (auto x : v) {...} syntax with this new class:
vector<X> v = {1, 3, 5, 7, 9};
cout &...
How to show git log history for a sub directory of a git repo?
...anges for src/nvfs
$ git log --oneline -- src/nvfs
d6f6b3b Changes for Mac OS X
803fcc3 Initial Commit
# Show all changes (one additional commit besides in src/nvfs).
$ git log --oneline
d6f6b3b Changes for Mac OS X
96cbb79 gitignore
803fcc3 Initial Commit
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What's the best way to check if a file exists in C?
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POSIX is an ISO standard; it defines access(). C is another ISO standard; it does not.
– Jonathan Leffler
Oct 24 '08 at 7:23
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RegEx to find two or more consecutive chars
...Finds a consecutive repeating lower or upper case letter. Matches on "abbc123" and not "abc1223". To allow for a space between them (i.e. a ab), then include an optional space in the regex between the captured character and the repeat...
([a-z]A-Z])\s?\1
...
An efficient way to transpose a file in Bash
...real 0m0.390s
user 0m0.370s
sys 0m0.010s
EDIT by Ed Morton (@ghostdog74 feel free to delete if you disapprove).
Maybe this version with some more explicit variable names will help answer some of the questions below and generally clarify what the script is doing. It also uses tabs as the...
How to get a vertical geom_vline to an x-axis of class date?
...rror() to see where the error occurred.``'
– CoderGuy123
Apr 12 at 23:57
add a comment
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How to test multiple variables against a value?
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123
I wouldn't be so quick to go for the set version. Tuple's are very cheap to create and iterate over. On my machine at least, tuples are ...