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Why doesn't std::queue::pop return value.?
... T pop()
{
auto x = elements[top_position];
// TODO: call destructor for elements[top_position] here
--top_position; // alter queue state here
return x; // calls T(const T&) which may throw
}
If the copy constructor of T throws on return, you h...
How to Rotate a UIImage 90 degrees?
...
My comment was that drawAtPoint may have to be called after the call to set the proper RotateCTM. Try moving drawAtPoint to just before UIGraphicsGetImageFromCurrentImageContext
– fbrereto
Aug 23 '09 at 6:52
...
How to attribute a single commit to multiple developers?
...p of devs, so you could essentially add anybody to this list even if they didn't work on a feature and GitHub would treat it as if they did. However, this shouldn't be an issue in most cases.
e.g. Co-authored-by: Linus Torvalds <torvalds@linux-foundation.org>
With normal authors or signing gro...
How do I convert dates in a Pandas data frame to a 'date' data type?
...
Nice - thank you - how do I get rid of the 00:00:00 at the end of each date?
– user7289
May 31 '13 at 8:39
1
...
How can I find an element by CSS class with XPath?
...ch cases like class="Testvalue" or class="newTest", @Tomalak's version provided in the comments is better:
//div[contains(concat(' ', @class, ' '), ' Test ')]
If you wished to be really certain that it will match correctly, you could also use the normalize-space function to clean up stray whites...
How to send a simple string between two programs using pipes?
...rocess and will vanish when the last process closes it.
A named pipe, also called a FIFO for its behavior, can be used to connect two unrelated processes and exists independently of the processes; meaning it can exist even if no one is using it. A FIFO is created using the mkfifo() library function...
Creating an array of objects in Java
...m C++ background I always assumed that like in C++ Java's new keyword also calls the constructor and allocates the I memory. I guess in Java new only creates the references not the actual object as compared to C++. Thanks for answer.
– Krishna Oza
Jan 12 '15 at...
Measuring elapsed time with the Time module
...
avg_time = sum(data[1]) / len(data[1])
print "Function %s called %d times. " % (fname, data[0]),
print 'Execution time max: %.3f, average: %.3f' % (max_time, avg_time)
def clear_prof_data():
global PROF_DATA
PROF_DATA = {}
Usage:
@profile
def your_function(...):
...
Does a finally block always get executed in Java?
...
Yes, finally will be called after the execution of the try or catch code blocks.
The only times finally won't be called are:
If you invoke System.exit()
If you invoke Runtime.getRuntime().halt(exitStatus)
If the JVM crashes first
If the JVM re...
How to Join to first row
...escription
FROM Orders
JOIN LineItems
ON LineItems.LineItemGUID =
(
SELECT TOP 1 LineItemGUID
FROM LineItems
WHERE OrderID = Orders.OrderID
)
In SQL Server 2005 and above, you could just replace INNER JOIN with CROSS APPLY:
SELECT ...