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In Objective-C why should I check if self = [super init] is not nil?
... Is this still true in light of the nullability specifiers? If my superclass's initializer is non-null then is it really still worth the extra clutter to check? (Although NSObject itself doesn't seem to have any for its -init afaict…)
– natevw
Dec...
How to put an image in div with CSS?
I would like to have all my images in CSS (the only way I know how is to put them in as background images).
4 Answers
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How to record webcam and audio using webRTC and a server-based Peer connection
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Unfortunately, as stated in my answer, the development of Kurento has slowed down severely after the Twilio acquisition. I recommend using Janus instead.
– jamix
Jan 3 '18 at 10:38
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How to disassemble one single function using objdump?
I've got a binary installed on my system, and would like to look at the disassembly of a given function. Preferrably using objdump , but other solutions would be acceptable as well.
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How to fix the Hibernate “object references an unsaved transient instance - save the transient insta
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Or you have created your entity object with new MyEntity (without synchronizing it to the database - flushing), instead of getting its synchronized instance from database. Making Hibernate queries using that instance informs you that what you expect to be in the database d...
Difference between `constexpr` and `const`
...t N>
class fixed_size_list
{ /*...*/ };
fixed_size_list<X> mylist; // X must be an integer constant expression
int numbers[X]; // X must be an integer constant expression
But note:
Declaring something as constexpr does not necessarily guarantee that it will be evaluated at co...
How to Define Callbacks in Android?
...kListener.
Just as a random example:
// The callback interface
interface MyCallback {
void callbackCall();
}
// The class that takes the callback
class Worker {
MyCallback callback;
void onEvent() {
callback.callbackCall();
}
}
// Option 1:
class Callback implements MyCallba...
Android: create a popup that has multiple selection options
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ALTERNATIVE OPTION
This is my first post so I'm excited to share my code!
This worked for me:
Place these two lines above the OnCreate event
final String[] Options = {"Red", "Blue"};
AlertDialog.Builder window;
Place this code on the event that wil...
Determine if Python is running inside virtualenv
...s, 'real_prefix') else sys.stdout.write('0')")
– Sam Myers
May 17 '17 at 19:16
6
This answer is o...
What is the cleanest way to disable CSS transition effects temporarily?
...element triggers a reflow. Wish I knew this a year ago when I was banging my head against the wall with this same problem. Is this still considered the most ideal way of handling this?
– Brett84c
Apr 20 '17 at 18:21
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