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Android activity life cycle - what are all these methods for?
What is the life cycle of an Android activity? Why are so many similar sounding methods ( onCreate() , onStart() , onResume() ) called during initialization, and so many others ( onPause() , onStop() , onDestroy() ) called at the end?
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INNER JOIN vs LEFT JOIN performance in SQL Server
I've created SQL command that uses INNER JOIN on 9 tables, anyway this command takes a very long time (more than five minutes). So my folk suggested me to change INNER JOIN to LEFT JOIN because the performance of LEFT JOIN is better, despite what I know. After I changed it, the speed of query got si...
Check if object is file-like in Python
...ave a read() and a write method(), but have a different implementation. It is and realization of the Duck Typing concept.
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When do we have to use copy constructors?
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The copy constructor generated by the compiler does member-wise copying. Sometimes that is not sufficient. For example:
class Class {
public:
Class( const char* str );
~Class();
private:
char* stored;
};
Class::Class( const char* str )
{
stored = new char[srtlen( str...
Is there a “standard” format for command line/shell help text?
If not, is there a de facto standard? Basically I'm writing a command line help text like so:
8 Answers
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Setting log level of message at runtime in slf4j
When using log4j, the Logger.log(Priority p, Object message) method is available and can be used to log a message at a log level determined at runtime. We're using this fact and this tip to redirect stderr to a logger at a specific log level.
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Is 0 a decimal literal or an octal literal?
Zero is always zero, so it doesn't matter. But in a recent discussion with a friend he said that octal literals are almost unused today. † Then it dawned upon me that actually almost all integer literals in my code are octal, namely 0 .
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How can I determine if a variable is 'undefined' or 'null'?
How do I determine if variable is undefined or null ?
30 Answers
30
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How useful/important is REST HATEOAS ( maturity level 3)?
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Nobody in the REST community says REST is easy. HATEOAS is just one of the aspects that adds difficulty to a REST architecture.
People don't do HATEOAS for all the reasons you suggest: it's difficult. It adds complexity to both the server side and the client (if ...
Is there “0b” or something similar to represent a binary number in Javascript
I know that 0x is a prefix for hexadecimal numbers in Javascript. For example, 0xFF stands for the number 255.
10 Answe...