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Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...AMD documents it and compilers don't expose it.)
(Yes, these instructions all run on the same execution unit).
This dependency doesn't just hold up the 4 popcnts from a single loop iteration. It can carry across loop iterations making it impossible for the processor to parallelize different loop...
Where can I find a list of scopes for Google's OAuth 2.0 API? [closed]
...
What you are looking for is the Google APIs Discovery Service.
A few other interesting resources:
An excellent blog by Nicolas Garnier which describes the important things behind this service.
The Google OAuth2 playground, is another good source of info.
Finally if you're ...
how to delete all cookies of my website in php
I'm wondering if I can delete all my website's cookies when a user click on logout, because I used this as function to delete cookies but it isn't work properly:
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In Laravel, the best way to pass different types of flash messages in the session
...ve a helper function to make it work for me, usually this is in a separate service:
function displayAlert()
{
if (Session::has('message'))
{
list($type, $message) = explode('|', Session::get('message'));
$type = $type == 'error' : 'danger';
$type = $type == '...
Git 'fatal: Unable to write new index file'
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If you have your github setup in some sort of online syncing service, such as google drive or dropbox, try disabling the syncing as the syncing service tries to read/write to the file as github tries to do the same, leading to github not working correctly.
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How do I remove all .pyc files from a project?
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You are not quoting {}. What would happen if accidentally word-split and deleted an intermediate path which happens to be called like a fragment of the path you found?
– Robottinosino
Apr 3 '13 at 2:58
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Broadcast receiver for checking internet connection in android app
...xt) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
//should check null because in airplane mode it will be null
return (netInfo != null && netInfo.isConnected());
}
...
Why use Abstract Base Classes in Python?
...emented classes.
Long version
There is a contract between a class and its callers. The class promises to do certain things and have certain properties.
There are different levels to the contract.
At a very low level, the contract might include the name of a method or its number of parameters.
In a s...
What is token-based authentication?
...o a server that he or she is a valid user by passing a security token. The service validates the security token and processes the user request.
After the token is validated by the service, it is used to establish security context for the client, so the service can make authorization decisions or aud...
ExpressJS - throw er Unhandled error event
...bably isn't the best solution for a production environment. Starting your service as root may introduce some security holes to your server/application. In my case, this was a solution for a local service, but I'd encourage others to spend some more time trying to isolate the cause.
...