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Can I have multiple Xcode versions installed?
Is it possible to have more than one version of Xcode installed at the same time?
12 Answers
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Is there a generator version of `string.split()` in Python?
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The most efficient way I can think of it to write one using the offset parameter of the str.find() method. This avoids lots of memory use, and relying on the overhead of a regexp when it's not needed.
[edit 2016-8-2: updated this to optionally support regex separators]
def isplit(source, sep...
Animate change of view controllers without using navigation controller stack, subviews or modal cont
NavigationControllers have ViewController stacks to manage, and limited animation transitions.
6 Answers
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Explanation of strong and weak storage in iOS5
I am new to iOS5 development and using objective-c. I have trouble understanding the difference between strong and weak storage. I have read the documentation and other SO questions, but they all sound identical to me with no further insight.
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What is the difference between Serializable and Externalizable in Java?
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To add to the other answers, by implementating java.io.Serializable, you get "automatic" serialization capability for objects of your class. No need to implement any other logic, it'll just work. The Java runtime will use reflection to figure out how to marshal and unmarshal y...
Android equivalent of NSUserDefaults in iOS
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This is the most simple solution I've found:
//--Init
int myvar = 12;
//--SAVE Data
SharedPreferences preferences = context.getSharedPreferences("MyPreferences", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.put...
Print an integer in binary format in Java
...'s what I wrote:
/**
* Converts an integer to a 32-bit binary string
* @param number
* The number to convert
* @param groupSize
* The number of bits in a group
* @return
* The 32-bit long bit string
*/
public static String intToString(int number, int groupSize) {
StringBu...
How can I develop for iPhone using a Windows development machine?
...the iPhone SDK on a Windows machine? Are there plans for an iPhone SDK version for Windows?
39 Answers
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Design for Facebook authentication in an iOS app that also accesses a secured web service
Goal:
Allow a user to authentication with Facebook into an iOS application which requires access to a protected web service that I'm running.
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How to change Hash values?
... happens a fair amount with Rails projects.
Here's some code to ensure a params hash is in UTF-8:
def convert_hash hash
hash.inject({}) do |h,(k,v)|
if v.kind_of? String
h[k] = to_utf8(v)
else
h[k] = convert_hash(v)
end
h
end
end
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