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Are std::vector elements guaranteed to be contiguous?
...ctor elements guaranteed to be contiguous? In order word, can I use the pointer to the first element of a std::vector as a C-array?
...
What's the difference between the 'ref' and 'out' keywords?
...@faulty: No, ref is not only applicable to value types. ref/out are like pointers in C/C++, they deal with the memory location of the object (indirectly in C#) instead of the direct object.
– thr
Mar 15 '10 at 6:53
...
Changing the “tick frequency” on x or y axis in matplotlib?
...thon's range function just in case min(x) and max(x) are floats instead of ints.)
The plt.plot (or ax.plot) function will automatically set default x and y limits. If you wish to keep those limits, and just change the stepsize of the tick marks, then you could use ax.get_xlim() to discover what ...
Deprecated ManagedQuery() issue
...contentUri, proj, null, null, null);
if(cursor.moveToFirst()){;
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
res = cursor.getString(column_index);
}
cursor.close();
return res;
}
...
PDO closing connection
...ion $e) {
throw new PDOException($e->getMessage(), (int) $e->getCode());
}
}
return self::$_instance;
}
public static function closeInstance() {
return self::$_instance = null;
}
}
}
$req = PDO2...
How to access the last value in a vector?
...
To answer this not from an aesthetical but performance-oriented point of view, I've put all of the above suggestions through a benchmark. To be precise, I've considered the suggestions
x[length(x)]
mylast(x), where mylast is a C++ function implemented through Rcpp,
tail(x, n=1)
dplyr::las...
Is there a documented way to set the iPhone orientation?
...d to confirm or deny the orientation in your override of shouldAutorotateToInterfaceOrientation. But this will cause shouldAutorotate... to be called again by the system.
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Still Reachable Leak detected by Valgrind
...d and cannot be subsequently freed because the program no longer has any pointers to the allocated memory block." In other words, you cannot free memory that you no longer have any pointers to. Such memory is therefore a "memory leak". Valgrind uses this stricter definition of the term "memory leak"...
Sqlite LIMIT / OFFSET query
...LIMIT without first using ORDER BY may not always give you the results you intend. In practice, SQLite will return the rows in some order, probably determined by how they're physically stored in the file. But this doesn't necessarily mean it's in the order you want. The only way to get a predicta...
Making a LinearLayout act like an Button
...
I ran into this problem just now. You'll have to set the LinearLayout to clickable. You can either do this in the XML with
android:clickable="true"
Or in code with
yourLinearLayout.setClickable(true);
Cheers!
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