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C++ Double Address Operator? (&&)
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This is C++11 code. In C++11, the && token can be used to mean an "rvalue reference".
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Proper stack and heap usage in C++?
... It's lifespan: any local variable inside a function (anything you do not malloc() or new) lives on the stack. It goes away when you return from the function. If you want something to live longer than the function that declared it, you must allocate it on the heap.
class Thingy;
Thingy* foo( )
{
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delete vs delete[] operators in C++
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The delete operator deallocates memory and calls the destructor for a single object created with new.
The delete [] operator deallocates memory and calls destructors for an array of objects created with new [].
Using delete on a pointer returned...
Do Java arrays have a maximum size?
...Kevin Bourrillion: This seems to have changed, using Oracle 1.7.0_07 I can allocate up to MAX_VALUE-2 elements. This is independent of what I allocate, and I really wonder what can the VM use the two "things" for (the length doesn't fit in 2 bytes).
– maaartinus
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How do I get the file name from a String containing the Absolute file path?
... ended up with:
String filenameWithPath = "C:\\temp\\hello.xls";
String[] tokens = filenameWithPath.split("[\\\\|/]");
String filename = tokens[tokens.length - 1];
How to edit log message already committed in Subversion?
...=" %%a in ('svnlook date -r %REV% %REPOS%') do @set DATESTAMP=%%a
for /F "tokens=1-2 delims= " %%a in ("%DATESTAMP%") do (
set DATESTAMPDATE=%%a
set DATESTAMPTIME=%%b )
:: Expects DATESTAMPDATE in the format: 2012-02-24
for /F "tokens=1-3 delims=-" %%a in ("%DATESTAMPDATE%") do (
set DATESTAMPY...
Find the PID of a process that uses a port on Windows
... I came to this action. Copy and save it in a .bat file:
FOR /F "usebackq tokens=5" %%i IN (`netstat -aon ^| find "3306"`) DO taskkill /F /PID %%i
Change 'find "3306"' in the port number which needs to be free. Then run the file as administrator. It will kill all the processes running on this por...
Should I return a Collection or a Stream?
...ually two costs here: the cost of storing values in the collection (memory allocation and copying) and also the cost of creating the values in the first place. The latter cost can often be reduced or avoided by taking advantage of a Stream's laziness-seeking behavior. A good example of this are the ...
fatal: could not read Username for 'https://github.com': No such file or directory
... username and password for security reason.
You can also try Github OAuth token, then you can do
git config remote.origin.url 'https://{token}@github.com/{username}/{project}.git'
or
git remote add origin 'https://{token}@github.com/{username}/{project}.git'
This works for me!
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Returning an array using C
...ring scope, i.e., when the function returns.
You will need to dynamically allocate the memory inside of the function or fill a preallocated buffer provided by the caller.
Option 1:
dynamically allocate the memory inside of the function (caller responsible for deallocating ret)
char *foo(int cou...