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How much is the overhead of smart pointers compared to normal pointers in C++?
...e, and soon shared_ptrs become the default memory management technique. So now you have repeated 1-3% abstraction penalties which are taken over and over again.
– Nathan Doromal
Nov 27 '19 at 14:53
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How can I delay a method call for 1 second?
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You could also use a block
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[object method];
});
Most of time you will want to use dispatch_get_main_queue, although if there is no UI in the method you could use a global queue.
Edit:
Swift...
Python speed testing - Time Difference - milliseconds
...roseconds
>>> import datetime
>>> a = datetime.datetime.now()
>>> b = datetime.datetime.now()
>>> c = b - a
>>> c
datetime.timedelta(0, 4, 316543)
>>> c.days
0
>>> c.seconds
4
>>> c.microseconds
316543
Be aware that c.micros...
What are the differences between virtual memory and physical memory?
..., while maintaining a respectable performance for the softwares running.
Now the main question boils down to how the memory is being managed. What exactly governs where in the memory will the data belonging to a given software reside?
Possible solution 1: Let individual softwares specify expl...
Selenium c# Webdriver: Wait Until Element is Present
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This method is now deprecated, you should instead use the property ImplicitWait : Driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(10);
– Samuel Rondeau-Millaire
Mar 31 '17 at 15:17
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Convert a character digit to the corresponding integer in C
...the same for letters, for example:
char c = 'b';
int x = c - 'a'; // x is now not necessarily 1
The standard guarantees that the char values for the digits '0' to '9' are contiguous, but makes no guarantees for other characters like letters of the alphabet.
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How to use Google App Engine with my own naked domain (not subdomain)?
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[Update April 2016] This answer is now outdated, custom naked domain mapping is supported, see Lawrence Mok's answer.
I have figured it out!
First off: it is impossible to link something like mydomain.com with your appspot app. This is considered a naked dom...
Computational complexity of Fibonacci Sequence
I understand Big-O notation, but I don't know how to calculate it for many functions. In particular, I've been trying to figure out the computational complexity of the naive version of the Fibonacci sequence:
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What is the best collation to use for MySQL with PHP? [closed]
...the one we're going to test next:
charset utf8 collate utf8_general_ci
-- now, create the table and fill it with values
CREATE TABLE `test` (`key` VARCHAR(16), `value` VARCHAR(16) )
CHARACTER SET utf8 COLLATE utf8_general_ci;
INSERT INTO `test` VALUES ('Key ONE', 'value'), ('Key TWO', 'valúe'...
How do you remove an invalid remote branch reference from Git?
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You might be needing a cleanup:
git gc --prune=now
or you might be needing a prune:
git remote prune public
prune
Deletes all stale tracking branches under <name>. These stale branches have already been removed from the remote repository referenced by &...