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viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
I'm struggling to find a good solution to this problem. In a view controller's -viewWillDisappear: method, I need to find a way to determine whether it is because a view controller is being pushed onto the navigation controller's stack, or whether it is because the view controller is disappearing ...
What is the difference between SAX and DOM?
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Well, you are close.
In SAX, events are triggered when the XML is being parsed. When the parser is parsing the XML, and encounters a tag starting (e.g. <something>), then it triggers the tagStarted event (actual name of event might differ). Similarly when the end of the tag is met ...
What is attr_accessor in Ruby?
...hard time understanding attr_accessor in Ruby .
Can someone explain this to me?
19 Answers
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What's the difference between an inverted index and a plain old index?
...in databases) but I also hear a lot of people talk about inverted indices. Is there something fundamentally different between the two? They sound like the same thing.
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Do checkbox inputs only post data if they're checked?
Is it standard behaviour for browsers to only send the checkbox input value data if it is checked upon form submission?
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What exactly is OAuth (Open Authorization)?
What exactly is OAuth (Open Authorization)?
9 Answers
9
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Comparison of DES, Triple DES, AES, blowfish encryption for data
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Use AES.
In more details:
DES is the old "data encryption standard" from the seventies. Its key size is too short for proper security (56 effective bits; this can be brute-forced, as has been demonstrated more than ten years ago). Also, DES uses 64-bit bl...
Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?
What is the convention for suffixing method names with "Async"?
7 Answers
7
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Which would be better for concurrent tasks on node.js? Fibers? Web-workers? or Threads?
...blem: Fibers, Webworkers and Threads (thread-a-gogo). Now which one to use is a confusion and one of them definitely needs to be used - afterall what's the purpose of having a server which is just good at IO and nothing else? Suggestions needed!
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SHA512 vs. Blowfish and Bcrypt [closed]
...bcrypt or SHA-512 (in the context of an appropriate algorithm like PBKDF2) is good enough. And the answer is yes, either algorithm is secure enough that a breach will occur through an implementation flaw, not cryptanalysis.
If you insist on knowing which is "better", SHA-512 has had in-depth review...