No. The part of the URL starting with the # symbol is never sent to the server. The # symbol in an URL is to introduce the fragment identifier. This is used to link to a specific part of the page. If a browser loads /#some/url, it will effectively load /, and skip to the … Read more
The salt just needs to be random and unique. It can be freely known as it doesn’t help an attacker. Many systems will store the plain text salt in the database in the column right next to the hashed password. The salt helps to ensure that if two people (User A and User B) happen … Read more
All Android devices support SHA-256. The NoSuchAlgorithmException indicates that a requested algorithm could not be found and is necessary because the method takes a String argument for the algorithm name. If you passed in “foo-256”, the method’s only recourse is to throw a NoSuchAlgorithmException because, for reasons beyond my understanding, there’s no algorithm called “foo-256”. … Read more
Modified Base64 (when /,= and + are replaced) is safe to create names but does not guarantee reverse transformation due to case insensitivity of many file systems and urls. Base64 is case sensitive, so it will not guarantee 1-to-1 mapping in cases of case insensitive file systems (all Windows files systems, ignoring POSIX subsystem cases). … Read more
using hashlib: from hashlib import sha256 input_ = input(‘Enter something: ‘) print(sha256(input_.encode(‘utf-8’)).hexdigest())
This should do what you want: events.map do |hash| hash.select do |key, value| [:id, :start].include? key end end Potentially faster (but somewhat less pretty) solution: events.map do |hash| { id: hash[:id], start: hash[:start] } end If you need return_keys to be dynamic: return_keys = [:id, :start] events.map do |hash| {}.tap do |new_hash| return_keys.each do |key| … Read more
You need Java’s HashSet (Java 8). The description from the official documentation is: This class implements the Set interface, backed by a hash table (actually a HashMap instance). It makes no guarantees as to the iteration order of the set; in particular, it does not guarantee that the order will remain constant over time. This … Read more
reject – create a new array without elements that match and return the new array delete_if – delete elements that match from current array and return the array reject! – delete elements that match from current array. Return the array if something was rejected, or nil when none.
If you use Rails: Example with hash: camelCase to snake_case: hash = { camelCase: ‘value1’, changeMe: ‘value2’ } hash.transform_keys { |key| key.to_s.underscore } # => { “camel_case” => “value1”, “change_me” => “value2” } source: http://apidock.com/rails/v4.0.2/Hash/transform_keys For nested attributes use deep_transform_keys instead of transform_keys, example: hash = { camelCase: ‘value1’, changeMe: { hereToo: { andMe: ‘thanks’ … Read more
Without quotes is better. It’s in {} so it’s obvious that you are not using barewords, plus it is both easier to read and type (two less symbols). But all of this depends on the programmer, of course.