No idea how you got your results, since it would not sort by string value… You should reverse a1 and a2 in your example Best way in any case (as per Mladen) is: metrics = {“sitea.com” => 745, “siteb.com” => 9, “sitec.com” => 10 } metrics.sort_by {|_key, value| value} # ==> [[“siteb.com”, 9], [“sitec.com”, 10], … Read more
Ok. Seeing as I need to write about this over and over, I’ll do one last canonical answer on pepper alone. The Apparent Upside Of Peppers It seems quite obvious that peppers should make hash functions more secure. I mean, if the attacker only gets your database, then your users passwords should be secure, right? … Read more
xor is a dangerous default function to use when hashing. It is better than and and or, but that doesn’t say much. xor is symmetric, so the order of the elements is lost. So “bad” will hash combine the same as “dab”. xor maps pairwise identical values to zero, and you should avoid mapping “common” … Read more
You forgot to put a . before the try: @myvar = session[:comments].try(:[], @comment.id) since [] is the name of the method when you do [@comment.id].
I didn’t verify this myself, but you can look at this JavaScript implementation of Java’s String.hashCode() method. Seems reasonably short. With this prototype you can simply call .hashCode() on any string, e.g. “some string”.hashCode(), and receive a numerical hash code (more specifically, a Java equivalent) such as 1395333309. String.prototype.hashCode = function() { var hash = … Read more
Data::Dumper is your friend. use Data::Dumper; my %hash = (‘abc’ => 123, ‘def’ => [4,5,6]); print Dumper(\%hash); will output $VAR1 = { ‘def’ => [ 4, 5, 6 ], ‘abc’ => 123 };
There is a workaround by using the history API on modern browsers with fallback on old ones: if(history.pushState) { history.pushState(null, null, ‘#myhash’); } else { location.hash=”#myhash”; } Credit goes to Lea Verou
Usually hashes wouldn’t do sums, otherwise stop and pots will have the same hash. and you wouldn’t limit it to the first n characters because otherwise house and houses would have the same hash. Generally hashs take values and multiply it by a prime number (makes it more likely to generate unique hashes) So you … Read more
Actually this is kind of strange, with the string conversions – which the membership provider does to put them into config files. Hashes and salts are binary blobs, you don’t need to convert them to strings unless you want to put them into text files. In my book, Beginning ASP.NET Security, (oh finally, an excuse … Read more
In Ruby 2.1 and higher you can do { a: ‘a’, b: ‘b’ }.map { |k, str| [k, “%#{str}%”] }.to_h