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Traversing text in Insert mode
While in Insert Mode in Vim, is there any way to traverse the text moving some characters forward and backward other than using the arrow keys?
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Does Java have a HashMap with reverse lookup?
I have data that is organized in kind of a "key-key" format, rather than "key-value". It's like a HashMap, but I will need O(1) lookup in both directions. Is there a name for this type of data structure, and is anything like this included in Java's standard libraries? (or maybe Apache Commons?)
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Check if a Class Object is subclass of another Class Object in Java
I'm playing around with Java's reflection API and trying to handle some fields. Now I'm stuck with identifying the type of my fields. Strings are easy, just do myField.getType().equals(String.class) . The same applies for other non-derived classes. But how do I check derived classes? E.g. LinkedLi...
How to compile and run C/C++ in a Unix console/Mac terminal?
How can I compile/run C or C++ in Unix console or a Mac terminal?
16 Answers
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select * vs select column
If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory?
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Compare JavaScript Array of Objects to Get Min / Max
I have an array of objects and I want to compare those objects on a specific object property. Here's my array:
16 Answers
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How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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What is the best way to test for an empty string in Go?
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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...our preference) between them. The two sets are stored and manipulated as Javascript arrays, as the title says.
10 Answers
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Quicksort vs heapsort
Both quicksort and heapsort do in-place sorting. Which is better? What are the applications and cases in which either is preferred?
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