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How to pass object with NSNotificationCenter
I am trying to pass an object from my app delegate to a notification receiver in another class.
5 Answers
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When would you use the Builder Pattern? [closed]
...d method could be modified to check parameters after they have been copied from the builder to the Pizza object and throw an IllegalStateException if an invalid parameter value has been supplied. This pattern is flexible and it is easy to add more parameters to it in the future. It is really only us...
AWS ssh access 'Permission denied (publickey)' issue [closed]
... It took me ages to find this out - it's not mentioned in the connect info from the console! It does tell you when you try to use root, but I thought ec2-user was a reference to my username. Doh!
– Adrian Mouat
Jan 13 '12 at 16:37
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How to print last two columns using awk
...er. I thought we were discussing where the original old awk behavior came from.
– jim mcnamara
Oct 19 '13 at 15:44
+1...
Auto margins don't center image in page
... inheritance, elements with position:relative; will prevent margin:0 auto; from working, even if top, right, bottom, and left aren't set.
Setting the element to position:static; (the default) may fix it under these circumstances. Generally, block level elements with a specified width will respect m...
What data type to use for hashed password field and what length?
...ion is not strong enough for storing passwords. You should read the answer from Gilles on this thread for a more detailed explanation.
For passwords, use a key-strengthening hash algorithm like Bcrypt or Argon2i. For example, in PHP, use the password_hash() function, which uses Bcrypt by default.
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MIN and MAX in C
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I've added the definitions from the systems I have access to in my answer above (the comment field doesn't accept formatting as far as I can tell). Will try to find the links to the FreeBSD/Linux/glibc source repos.
– Mikel
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What it the significance of the Javascript constructor property?
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September 2020 Update
The answer below is from the days of ECMAScript 3 and the first sentence is no longer true because since ECMAScript 6, the constructor property is used in a few places. However, I think the overall gist still applies. Thanks to T. J. Crowder for...
setBackground vs setBackgroundDrawable (Android)
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It prevented me from compiling. I put the problematic code in its own function and disabled lint only for that function like this. @TargetApi(Build.VERSION_CODES.JELLY_BEAN) @SuppressWarnings("deprecation") private static void setBg(Relati...
String strip() for JavaScript? [duplicate]
...d efficient JavaScript implementation to strip leading and trailing spaces from a string?
8 Answers
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