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What's the simplest way to test whether a number is a power of 2 in C++?
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so basically (n>0 && ((n & (n-1)) == 0))
– Saurabh Goyal
Jul 10 '16 at 8:06
1
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git: difference between “branchname” and “refs/heads/branchname”
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Sending command line arguments to npm script
... a parsing library like yargs or minimist; nodejs exposes process.argv globally, containing command line parameter values, but this is a low-level API (whitespace-separated array of strings, as provided by the operating system to the node executable).
Edit 2013.10.03: It's not currently possible...
What is Dispatcher Servlet in Spring?
...and instead delegates responsibility for the business logic to one or more service objects.)
The logic performed by a controller often results in some information that needs to be carried back to the user and displayed in the browser. This information is referred to as the model. But sending raw inf...
Making an array of integers in iOS
...rays are such a hassle for anything but trivial, one-off use that it's actually less trouble to wrap any arrays you plan on keeping around as NSArrays of NSNumber.
– Chuck
Jul 27 '10 at 1:58
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What exactly does git rebase --skip do?
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How do you list the active minor modes in emacs?
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How to determine the memory footprint (size) of a variable?
...mprof.so" > /etc/php5/mods-available/memprof.ini
sudo php5enmod memprof
service apache2 restart
And then in my code:
<?php
memprof_enable();
// do your stuff
memprof_dump_callgrind(fopen("/tmp/callgrind.out", "w"));
Finally open the callgrind.out file with KCachegrind
Using Google gperftools...
Do browsers send “\r\n” or “\n” or does it depend on the browser?
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Java: Path vs File
...ries could
also cause memory resource problems, resulting in a denial of service.
It was not possible to write reliable code that could recursively walk
a file tree and respond appropriately if there were circular symbolic
links.
With so many drawbacks for java.io.File, we need really n...