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How many GCC optimization levels are there?
... -Og to bring the total to 8
From the man page:
-O (Same as -O1)
-O0 (do no optimization, the default if no optimization level is specified)
-O1 (optimize minimally)
-O2 (optimize more)
-O3 (optimize even more)
-Ofast (optimize very aggressively to the point of breaking standard ...
What is “X-Content-Type-Options=nosniff”?
...re now respecting this header, including Chrome/Chromium, Edge, IE >= 8.0, Firefox >= 50 and Opera >= 13. See :
https://blogs.msdn.com/b/ie/archive/2008/09/02/ie8-security-part-vi-beta-2-update.aspx?Redirected=true
Sending the new X-Content-Type-Options response header with the value
...
How to add NERDTree to your .vimrc
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200
Okay, the previous version was a bit terse, but the answer you're looking for is to add the lin...
How to perform OR condition in django queryset?
...
from django.db.models import Q
User.objects.filter(Q(income__gte=5000) | Q(income__isnull=True))
via Documentation
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More elegant “ps aux | grep -v grep”
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edited Nov 8 '17 at 0:53
answered Feb 21 '12 at 10:31
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What does FrameLayout do?
...ndroid:layout_gravity="center_vertical"
android:layout_marginTop="70dp"
android:background="@android:color/holo_blue_light"
android:padding="10dp"
android:text="TextView placed at the top of the Imageview"
android:textColor="@android:color/white"
andro...
Is #pragma once part of the C++11 standard?
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109
#pragma once is not standard. It is a widespread (but not
universal) extension, which can be u...
How can I change the version of npm using nvm?
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Kevin Burke
44.8k6060 gold badges151151 silver badges259259 bronze badges
answered Nov 6 '15 at 20:46
lawrencelawrence
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Remove all special characters from a string [duplicate]
...g); // Replaces all spaces with hyphens.
return preg_replace('/[^A-Za-z0-9\-]/', '', $string); // Removes special chars.
}
Usage:
echo clean('a|"bc!@£de^&$f g');
Will output: abcdef-g
Edit:
Hey, just a quick question, how can I prevent multiple hyphens from being next to each othe...
When should we implement Serializable interface?
...ng something
complicated and turning it into a flat
sequence of 1s and 0s, then taking
that sequence of 1s and 0s (possibly
at another place, possibly at another
time) and reconstructing the original
complicated "something."
So, implement the Serializable interface when you need to sto...