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What is a C++ delegate?
...lt;int(double)> f = [can be set to about anything in this answer]
// Usually more useful as a parameter to another functions
Option 6: binding (using std::bind)
Allows setting some parameters in advance, convenient to call a member function for instance.
struct MyClass
{
int DoStuff(dou...
What's the difference of $host and $http_host in Nginx
...e module but you won't find it with that name because it is defined generically as $http_HEADER (ref).
$http_HEADER
The value of the HTTP request header HEADER when converted to lowercase and with 'dashes' converted to 'underscores', e.g. $http_user_agent, $http_referer...;
Summarizing:
$http_...
Installing multiple instances of the same windows service on a server
...iple-instances-of-same-windows-service/. You can insert code into the installer to get the service name that you want when you run installutil.
– Vivian River
Feb 2 '10 at 21:58
9...
Allow user to select camera or gallery for image
...e));
yourIntentsList.add(finalIntent);
}
List<ResolveInfo> listGall = packageManager.queryIntentActivities(gallIntent, 0);
for (ResolveInfo res : listGall) {
final Intent finalIntent = new Intent(gallIntent);
finalIntent.setComponent(new ComponentName(res.activityInfo.packageName,...
What does the 'L' in front a string mean in C++?
...ry jugement. As a non native English speaker, I can say that I must use it all the time...
– Heyji
May 27 '19 at 19:48
add a comment
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How to debug Apache mod_rewrite
...ng off. If you forget you'll fill your hard disk up fairly promptly, especially on a production server.
– John Hunt
May 21 '15 at 15:18
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sh...
Using Font Awesome icon for bullet points, with a single list item element
...
The new fontawesome (version 4.0.3) makes this really easy to do. We simply use the following classes:
<ul class="fa-ul">
<li><i class="fa-li fa fa-check-square"></i>List icons (like these)</li>
<li><i class="fa-li fa fa-check-squ...
How to use relative/absolute paths in css URLs?
...
Personally, I would fix this in the .htaccess file. You should have access to that.
Define your CSS URL as such:
url(/image_dir/image.png);
In your .htacess file, put:
Options +FollowSymLinks
RewriteEngine On
RewriteRule ^ima...
How to call C from Swift?
Is there a way to call C routines from Swift?
6 Answers
6
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Pure virtual destructor in C++
...ing from A and then try to delete or destroy it, A's destructor will eventually be called. Since it is pure and doesn't have an implementation, undefined behavior will ensue. On one popular platform, that will invoke the purecall handler and crash.
Edit: fixing the declaration to be more conformant...