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TreeMap sort by value
I want to write a comparator that will let me sort a TreeMap by value instead of the default natural ordering.
8 Answers
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What is the difference between call and apply?
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The difference is that apply lets you invoke the function with arguments as an array; call requires the parameters be listed em>x m>plicitly. A useful mnemonic is "A for array and C for comma."
See MDN's documentation on apply and call.
Pseudo syntam>x m>:
theFunction.apply(valueForThis, arrayOfArg...
Creating an abstract class in Objective-C
I'm originally a Java programmer who now works with Objective-C. I'd like to create an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible?
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Tracing m>X m>ML request/responses with JAm>X m>-WS
...sy way (aka: not using a prom>x m>y) to get access to the raw request/response m>X m>ML for a webservice published with JAm>X m>-WS reference implementation (the one included in JDK 1.5 and better) ?
Being able to do that via code is what I need to do.
Just having it logged to a file by clever logging configuratio...
Immutability of Strings in Java
Consider the following em>x m>ample.
26 Answers
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What is the difference between memoization and dynamic programming?
What is the difference between memoization and dynamic programming? I think dynamic programming is a subset of memoization. Is it right?
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Rails raw SQL em>x m>ample
...e in rails? Because When I deploy this code in heroku,there is a request timeout error.I think this will be faster if I use raw sql.
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How do I get the result of a command in a variable in windows?
I'm looking to get the result of a command as a variable in a Windows batch script (see how to get the result of a command in bash for the bash scripting equivalent). A solution that will work in a .bat file is preferred, but other common windows scripting solutions are also welcome.
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How to show “Done” button on iPhone number pad
There is no "Done" button on the number pad. When a user finishes entering numeric information in a tem>x m>t field, how can I make the number pad disappear?
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Is errno thread-safe?
In errno.h , this variable is declared as em>x m>tern int errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ?
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