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How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?
I understand the diamond problem, and above piece of code does not have that problem.
5 Answers
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HTML5 Canvas vs. SVG vs. div
What is the best approach for creating elements on the fly and being able to move them around? For example, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around.
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How can you determine a point is between two other points on a line segment?
Let's say you have a two dimensional plane with 2 points (called a and b) on it represented by an x integer and a y integer for each point.
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SQL query return data from multiple tables
...1 - Joins and Unions
This answer covers:
Part 1
Joining two or more tables using an inner join (See the wikipedia entry for additional info)
How to use a union query
Left and Right Outer Joins (this stackOverflow answer is excellent to describe types of joins)
Intersect queries (and how to repr...
GUI not working after rewriting to MVC
I'm practicing MVC style programming. I have a Mastermind game in a single file, working fine (maybe apart of the fact that "Check" button is invisible at start).
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TypeError: got multiple values for argument
...d the other threads that had to do with this error and it seems that my problem has an interesting distinct difference than all the posts I read so far, namely, all the other posts so far have the error in regards to either a user created class or a builtin system resource. I am experiencing this pr...
Why is XOR the default way to combine hashes?
Say you have two hashes H(A) and H(B) and you want to combine them. I've read that a good way to combine two hashes is to XOR them, e.g. XOR( H(A), H(B) ) .
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PHP Sort Array By SubArray Value
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Use usort.
function cmp_by_optionNumber($a, $b) {
return $a["optionNumber"] - $b["optionNumber"];
}
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usort($array, "cmp_by_optionNumber");
In PHP ≥5.3, you should use an anonymous function instead:
usort($array, function ($a, $b) {
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How to merge two sorted arrays into a sorted array? [closed]
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A minor improvement, but after the main loop, you could use System.arraycopy to copy the tail of either input array when you get to the end of the other. That won't change the O(n) performance characteristics of your solution, though.
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SQL update fields of one table from fields of another one
I have two tables:
7 Answers
7
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