readability

Is there extra overhead in using the object.ReferenceEquals method verses using ((object)obj1 == (object)obj2) ? In the first case, there would be a static method call involved, and in both cases some form of casting to an object would be involved. Even if the compiler balances out those methods, what about inequality? (object)obj != null as compared to... !object.ReferenceEquals(obj,null) I suppose that at some point, a logical negation would occur, either within the != operator, or as applied to the result of the ReferenceEquals method. What do you think? There's also the issue of

This question already has an answer here: Creating multiline strings in JavaScript 37 answers It doesn't really have to add newlines, just something readable. Anything better than this? str = "line 1" + "line 2" + "line 3"; Almost identical to NickFitz's answer: var str = ["" ,"line 1" ,"line 2" ,"line 3" ].join(""); // str will contain "line1line2line3" The difference, the code is slightly more maintainable because the lines can be re-ordered without regard to where the commas are. No syntax errors. I like this version (different than yours just in formatting of the code): var str = "line 1"

I am somewhat new to Ruby and although I find it to be a very intuitive language I am having some difficulty understanding how implicit return values behave. I am working on a small program to grep Tomcat logs and generate pipe-delimited CSV files from the pertinent data. Here is a simplified example that I'm using to generate the lines from a log entry. class LineMatcher class << self def match(line, regex) output = "" line.scan(regex).each do |matched| output << matched.join("|") << "\n" end return output end end end puts LineMatcher.match("00:00:13,207 06/18 INFO stateLogger -

In the book Javascript: The Good Parts by Douglas Crockford, this is all the author has to say about the continue Statement: The continue statement jumps to the top of the loop. I have never seen a piece of code that was not improved by refactoring it to remove the continue statement. This really confuses me. I know Crockford has some very opinionated views on JavaScript, but this just sounds entirely wrong to me. First of all, continue does more than just jump to the top of a loop. By default, it also progresses to the next iteration. So isn't Crockford's statement just completely false

Note: Please don't interpret this as "homework question." This is just a thing I curious to know :) The median of five is sometimes used as an exercise in algorithm design and is known to be computable using only 6 comparisons . What is the best way to implement this "median of five using 6 comparisons" in C# ? All of my attempts seem to result in awkward code :( I need nice and readable code while still using only 6 comparisons. public double medianOfFive(double a, double b, double c, double d, double e){ // // return median // return c; } Note: I think I should provide the "algorithm" here