ruby code snippets in ruby

"these series are only required to occupy adjacent positions in the input; the digits need not be numerically consecutive" what does it mean? show examples in ruby

"would you like #{first + second} to be your new fav number?" how to add with interpolation? in ruby

250741 is what i want to convert to an int array in ruby

[{:s, 1, :xl, 4}] is returned to me. i want to only return {:s, 1, :xl, 4}. how to? in ruby

a function to flatten a nested array, if it contains nil, removes the nils, if its elements are all nil, return empty array. in ruby

a s.txt file is in the current directory; write a ruby function that reads this file and prints its contents to screen. in ruby

a shorter way to do `class year def self.hi puts "hi" end end`? in ruby

a shorter way to do: ` arr = %w[black brown red orange yellow green blue violet grey white] cols = arr.each_with_index.map {|col , ind| [col, ind.to_s]}.to_h` in ruby

add a getter to a class in ruby

add a getter to a subclass in ruby

add a key-value pair to a map in ruby

add a method to a class in ruby

add a method to a subclass in ruby

add a node to the beginning of a linked list in ruby

add a node to the end of a linked list in ruby

add a private method to a class in ruby

add a private property to a class in ruby

add a private static method to a class in ruby

add a private static property to a class in ruby

add a property to a class in ruby

add a protected method to a class in ruby

add a protected property to a class in ruby

add a protected static method to a class in ruby

add a protected static property to a class in ruby

add a public method to a class in ruby

add a public property to a class in ruby

add a public static property to a class in ruby

add a setter to a class in ruby

add a setter to a subclass in ruby

add a static method to a class in ruby

add a static method to a subclass in ruby

add a static property to a class in ruby

add an element to the beginning of an array in ruby

add an element to the end of an array in ruby

add cors headers to a http server in ruby

add cors headers to a http server with a specific origin in ruby

add cors headers to a http server with a specific origin and methods in ruby

add two numbers in ruby

append a string to the end of another string in ruby

append to a csv file in ruby

append to a file in ruby

append to a json file in ruby

besides `%w[1 2 3]` what other methods or tricks exist that use % then some letter? in ruby

call a getter on an instance of a class in ruby

call a method on an instance of a class in ruby

call a private property on an instance of a class in ruby

call a private static method on an instance of a class in ruby

call a protected method on an instance of a class in ruby

call a protected property on an instance of a class in ruby

call a protected static method on an instance of a class in ruby

call a protected static property on an instance of a class in ruby

call a public method on an instance of a class in ruby

call a public property on an instance of a class in ruby

call a public static method on an instance of a class in ruby

call a public static property on an instance of a class in ruby

call a setter on an instance of a class in ruby

call a static method on an instance of a class in ruby

call a static property on an instance of a class in ruby

can i write a class method and class on the same line in ruby? in ruby

can you explain how to do this program and what is required? i didn't understand it when i read it: https://exercism.org/tracks/ruby/exercises/resistor-color-duo in ruby

can you patiently explain what happens in this? `words_array.each do |word| word_counts[word] ||= 0 word_counts[word] += 1 end` in ruby

case when in ruby

case-insensitive pangram-checker one-liner function in julia? in ruby

change it to one-liner : `def compute(dn1, dn2) raise argumenterror if dn1.length != dn2.length count = 0 dn1.length.times do |i| count += 1 if dn1[i] != dn2[i] end count end end` in ruby

change to one-liner : `class grains def self.square(n) raise argumenterror unless n.between?(1,64) 2 ** (n - 1) end` in ruby

change to oneliner: `class flattenarray def self.flatten(ar) [] if ar.nil? ar.flatten.compact end end` in ruby

check if array is empty in ruby

check if array is not empty in ruby

check if string starts with a timestamp in ruby

check if string starts with a timestamp and capture suffix in ruby

combine two maps in ruby

compute desired balance in ruby

concatenate two arrays in ruby

convert a number from base 10 to base 16 in ruby

convert a number from base 10 to base 2 in ruby

convert a number from base 2 to base 10 in ruby

convert a number from base 2 to base 16 in ruby

convert a number from base 2 to base 8 in ruby

convert it to a struct: `class series def initialize(series) = @series = series def slices(n) raise argumenterror if n > @series.length @series.chars.each_cons(n).map(&:join) end end` in ruby

convert seconds to minutes in ruby

copy a csv file in ruby

copy a directory in ruby

copy a file in ruby

copy a json file in ruby

count instances of an element inside an array in ruby

count words in array in ruby

create a 3 dimensional array in ruby

create a blake2b hash from a string in ruby

create a caesar cipher function in ruby

create a class in ruby

create a class with a constructor in ruby

create a csv file in ruby

create a directory in ruby

create a file in ruby

create a function that appends text to a string from an input array in ruby

create a function to output an html file with the title and body content and an ordered list from the input array in ruby

create a get request handler in ruby

create a http server and add a custom header to the response in ruby

create a http server and parse authorization headers in ruby

create a http server and parse cookies in ruby

create a http server and parse cookies and return a json response in ruby

create a http server and read the request body in ruby

create a http server and read the request body as binary in ruby

create a http server and read the request body as binary and return a binary response in ruby

create a http server and read the request body as form data in ruby

create a http server and read the request body as form url encoded in ruby

create a http server and read the request body as html in ruby

create a http server and read the request body as json in ruby

create a http server and read the request body as json and return a json response in ruby

create a http server and read the request body as multipart form data in ruby

create a http server and read the request body as text in ruby

create a http server and upload a file and return a binary response in ruby

create a http server on a specific port in ruby

create a http server on a specific port and host in ruby

create a http server with a connect route in ruby

create a http server with a custom route in ruby

create a http server with a get route in ruby

create a http server with a head route in ruby

create a http server with a options route in ruby

create a http server with a patch route in ruby

create a http server with a post route in ruby

create a http server with a put route in ruby

create a http server with a specific route in ruby

create a http server with a specific route and a specific status code in ruby

create a http server with a trace route in ruby

create a json file in ruby

create a linked list in ruby

create a loop in ruby

create a matrix in ruby

create a md5 hash from a string in ruby

create a password in ruby

create a password with a custom length in ruby

create a password with a custom length and lowercase letters in ruby

create a password with a custom length and numbers in ruby

create a password with a custom length and symbols in ruby

create a password with a custom length and uppercase letters in ruby

create a password with a custom length, uppercase letters and lowercase letters in ruby

create a password with at least one lowercase letter in ruby

create a password with at least one number in ruby

create a password with at least one symbol in ruby

create a password with at least one uppercase letter in ruby

create a password with lowercase letters in ruby

create a password with numbers in ruby

create a password with symbols in ruby

create a password with uppercase letters in ruby

create a password with uppercase letters and lowercase letters in ruby

create a password with uppercase, lowercase letters and numbers in ruby

create a password with uppercase, lowercase letters, numbers and symbols in ruby

create a rails model method to send an http post request with basic authorization in ruby

create a retry function in ruby

create a sha1 hash from a string in ruby

create a sha256 hash from a string in ruby

create a sha3_256 hash from a string in ruby

create a sha3_512 hash from a string in ruby

create a sha512 hash from a string in ruby

create a subclass in ruby

create a subclass with a constructor in ruby

create a tcp client in ruby

create a tcp client on a specific port in ruby

create a tcp server in ruby

create a tcp server on a specific port in ruby

create a template string in ruby

create a udp client in ruby

create a udp client on a specific port in ruby

create a udp server in ruby

create a udp server on a specific port in ruby

create an api call to gather nba player stats in ruby

create an array with every book of the bible in it in ruby

create an dictionary with every book of the bible in it where the key is all lowercase and the value is capitalized in ruby

create an empty list, an a list filled with dummy numbers in sml in ruby

create an example function that uses dynamic programming to sort a binary tree in ruby

create an instance of a class with a constructor in ruby

creatye a method to send an http post request with basic authorization in ruby

def initialize method in a class, using attr? in ruby

define a function that takes a string like "m" and displays only the "size" for [{p: 10, n: "m", size: {s: 7, m: 2}}] in ruby

delete a csv file in ruby

delete a directory in ruby

delete a file in ruby

delete a json file in ruby

describe this: ([*'a'..'z'] - phrase.downcase.chars).empty? in ruby

divide two numbers in ruby

even shorter way to do this ? `helloworld = object.new; def helloworld.hello = "hello, world!"` in ruby

example of a function that takes only the first two elements of an array and joins their indexes as an integer in ruby

explain `.sum(0, &cols.method(:[])).to_i` in ruby

explain `[3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5].chunk { |n| n.even? }.each { |even, ary| p [even, ary] }` in ruby

explain `e = (1..3).chain([4, 5]) e.to_a #=> [1, 2, 3, 4, 5]` in ruby

explain this `fibonacci.sum {| number | number * number }` in ruby

explain what "sum" does here and what is &: ` def self.value(colors) colors.first(2).sum('', &color_rules).to_i end` in ruby

explain what each thing does in this regex: (/(.).*\1|\d/i) in ruby

explain what this code does and why `arr = [1, 2, 3, 4, 5] arr.each {|a| print a -= 10, " "}` in ruby

find all the strings matching ‘tony’ in an array of strings, then return how many there are. if there are none then return nil in ruby

find the area of a circle in ruby

find the area of a parallelogram in ruby

find the area of a rectangle in ruby

find the area of a regular polygon in ruby

find the area of a regular polygon circumscribed around a circle in ruby

find the area of a regular polygon inscribed in a circle in ruby

find the area of a sector of a circle in ruby

find the area of a segment of a circle in ruby

find the area of a square in ruby

find the area of a triangle in ruby

find the average of a list of numbers in ruby

find the average of all elements in an array in ruby

find the average of all keys in a map in ruby

find the average of all nodes in a linked list in ruby

find the average of all values in a map in ruby

find the base 10 logarithm of a number in ruby

find the base 2 logarithm of a number in ruby

find the base e logarithm of a number in ruby

find the contents of a directory in ruby

find the creation date of a csv file in ruby

find the creation date of a directory in ruby

find the creation date of a file in ruby

find the creation date of a json file in ruby

find the cube root of a number in ruby

find the current date in ruby

find the current month in ruby

find the current year in ruby

find the difference of two maps in ruby

find the distance between two points in ruby

find the extension of a csv file in ruby

find the extension of a file in ruby

find the factorial of a number in ruby

find the first character in a string in ruby

find the first element in an array in ruby

find the first index of a character in a string in ruby

find the first index of a substring in a string in ruby

find the first node in a linked list in ruby

find the greatest common divisor of a list of numbers in ruby

find the greatest common divisor of two numbers in ruby

find the index of an element in an array in ruby

find the intersection of two maps in ruby

find the key associated with a value in a map in ruby

find the keys of a map in ruby

find the kth character in a string in ruby

find the kth index of a character in a string in ruby

find the kth index of a substring in a string in ruby

find the kth largest element in an array in ruby

find the kth largest key in a map in ruby

find the kth largest node in a linked list in ruby

find the kth largest number in a list in ruby

find the kth least common element in an array in ruby

find the kth least frequent element in an array in ruby

find the kth longest word in a string in ruby

find the kth most common element in an array in ruby

find the kth most frequent element in an array in ruby

find the kth smallest element in an array in ruby

find the kth smallest key in a map in ruby

find the kth smallest number in a list in ruby

find the largest element in an array in ruby

find the largest key in a map in ruby

find the largest value in a map in ruby

find the last accessed date of a csv file in ruby

find the last accessed date of a directory in ruby

find the last accessed date of a file in ruby

find the last character in a string in ruby

find the last element in an array in ruby

find the last index of a character in a string in ruby

find the last index of a substring in a string in ruby

find the last modified date of a csv file in ruby

find the last modified date of a file in ruby

find the last modified date of a json file in ruby

find the last node in a linked list in ruby

find the least common multiple of a list of numbers in ruby

find the least common multiple of two numbers in ruby

find the length of a linked list in ruby

find the length of a map in ruby

find the length of a string in ruby

find the length of an array in ruby

find the logarithm of a number in ruby

find the median of a list of numbers in ruby

find the median of all elements in an array in ruby

find the median of all keys in a map in ruby

find the median of all nodes in a linked list in ruby

find the median of all values in a map in ruby

find the midpoint between two points in ruby

find the mode of a list of numbers in ruby

find the mode of all elements in an array in ruby

find the mode of all keys in a map in ruby

find the mode of all nodes in a linked list in ruby

find the mode of all values in a map in ruby

find the name of a csv file in ruby

find the name of a directory in ruby

find the name of a file in ruby

find the natural logarithm of a number in ruby

find the nth decagonal number in ruby

find the nth fibonacci number in ruby

find the nth hexagonal number in ruby

find the nth lucas number in ruby

find the nth nonagonal number in ruby

find the nth prime number in ruby

find the nth root of a number in ruby

find the nth square number in ruby

find the parent directory of a directory in ruby

find the parent directory of a file in ruby

find the path of a directory in ruby

find the path of a file in ruby

find the path of a json file in ruby

find the range of a list of numbers in ruby

find the range of all elements in an array in ruby

find the range of all keys in a map in ruby

find the range of all nodes in a linked list in ruby

find the range of all values in a map in ruby

find the remainder of two numbers in ruby

find the root directory of a directory in ruby

find the root directory of a file in ruby

find the shortest word in a string in ruby

find the size of a file in ruby

find the size of a json file in ruby

find the slope between two points in ruby

find the smallest key in a map in ruby

find the smallest node in a linked list in ruby

find the smallest value in a map in ruby

find the square root of a number in ruby

find the standard deviation of a list of numbers in ruby

find the standard deviation of all elements in an array in ruby

find the standard deviation of all keys in a map in ruby

find the standard deviation of all nodes in a linked list in ruby

find the standard deviation of all values in a map in ruby

find the sum of a list of numbers in ruby

find the sum of all elements in an array in ruby

find the sum of all keys in a map in ruby

find the sum of all nodes in a linked list in ruby

find the sum of all values in a map in ruby

find the surface area of a cone in ruby

find the surface area of a cylinder in ruby

find the surface area of a rectangular prism in ruby

find the surface area of a regular polygon circumscribed around a cone in ruby

find the surface area of a regular polygon circumscribed around a cylinder in ruby

find the surface area of a regular polygon circumscribed around a pyramid in ruby

find the surface area of a regular polygon circumscribed around a sphere in ruby

find the surface area of a regular polygon circumscribed around a triangular prism in ruby

find the surface area of a regular polygon inscribed in a cone in ruby

find the surface area of a regular polygon inscribed in a cylinder in ruby

find the surface area of a regular polygon inscribed in a pyramid in ruby

find the surface area of a regular polygon inscribed in a sphere in ruby

find the surface area of a regular polygon inscribed in a triangular prism in ruby

find the surface area of a sphere in ruby

find the surface area of a triangular prism in ruby

find the symmetric difference of two maps in ruby

find the union of two maps in ruby

find the value associated with a key in a map in ruby

find the values of a map in ruby

find the variance of a list of numbers in ruby

find the variance of all keys in a map in ruby

find the variance of all nodes in a linked list in ruby

find the variance of all values in a map in ruby

find the volume of a cone in ruby

find the volume of a pyramid in ruby

find the volume of a regular polygon circumscribed around a cone in ruby

find the volume of a regular polygon circumscribed around a cylinder in ruby

find the volume of a regular polygon circumscribed around a pyramid in ruby

find the volume of a regular polygon circumscribed around a sphere in ruby

find the volume of a regular polygon circumscribed around a triangular prism in ruby

find the volume of a regular polygon inscribed in a cone in ruby

find the volume of a regular polygon inscribed in a cylinder in ruby

find the volume of a regular polygon inscribed in a pyramid in ruby

find the volume of a regular polygon inscribed in a sphere in ruby

find the volume of a regular polygon inscribed in a triangular prism in ruby

find the volume of a sphere in ruby

fix : `def convert(n) res = ''; nums = [3, 5, 7]; sounds = %w[pling plang plong]; nums.each |i| { (n % nums[i]).zero? ? res += sounds[i] : (res == '' ? n.to_s : "") } end res end in ruby

fix but keep short and use ternaries: `def convert(n) r = '' n%3 == 0 ? r << 'pling' : n%5 == 0 ? r << 'plang' : n%7 == 0 ? r << 'plong' : r.empty? ? n.to_s : r end` in ruby

fix it: `class isogram def self.isogram?(词) = 词.match(/(\w+).*\1/i) !~ end` in ruby

fix it: `series = struct.new(:string) { def slices(n) = string.each_char.each_cons(n).map(&:join) if n > string.length }` in ruby

fix this `class grains def self.square(n) = 2 ** (n - 1); raise argumenterror if !n.between?(1,64) def self.total = 18_446_744_073_709_551_615 end` in ruby

fix this: class flattenarray def self.flatten(ar) return [] if ar.all?(&:nil?) ar.compact! if ar.include?(nil) ar.flatten end end in ruby

fix: `def conv(n) res = ''; nums = [3, 5, 7]; sounds = ['pling', 'plang', 'plong'] nums.length.times do |i| if n % nums[i] == 0 res << sounds[i] else res.empty? ? n.to_s : res end end end` in ruby

fix: `series = struct.new(:str) { def slices(n) n > @str.length ? argumenterror.new("no!") : str.each_char.each_cons(n).map(&:join) end }` in ruby

for `word = "isogram" result = word.match(/(.)\1|\d/i) p !result` how to change so that hyphenated words are also processed? in ruby

for an input like: `%w[black brown white], write a function that takes the index of 1st element and index of 2nd element and combines them into a digit in ruby

for this array: [{p:10, n:"m", size: {s: 7, m: 2}} how to display only the 'size'? in ruby

format a date in to the format 'yyyy-mm-dd hh:mm:ss' in ruby

format a date in to the format 'yyyy-mm-dd hh:mm:ss.fff zzz' in ruby

format a date in to the format 'yyyy-mm-dd hh:mm:ss.fff' in ruby

format a date in to the format 'yyyy-mm-dd' in ruby

format a date in to the format month day, year in ruby

format a date in to the format month day, year hour:minute am/pm in ruby

format a date in to the format month day, year hour:minute:second am/pm in ruby

format a date in to the format month day, year hour:minute:second.fff am/pm in ruby

format a date in to the format month day, year hour:minute:second.fff am/pm zzz in ruby

format a date in to the format october 13, 2014 in ruby

format a date in to the format october 13, 2014 11:13 am in ruby

format a date in to the format october 13, 2014 11:13:00 am in ruby

format a date in to the format october 13, 2014 11:13:00.000 am in ruby

format a date in to the format october 13, 2014 11:13:00.000 am gmt-07:00 in ruby

format seconds to minutes awnd seconds in ruby

generate a hash from this: `%w[black brown red` such that values are its index. in ruby

generate a random array in ruby

generate a random boolean in ruby

generate a random number in ruby

generate a random number between 0 and 1 in ruby

generate a random number between 1 and 10 in ruby

generate a random number between 1 and 100 in ruby

generate a random string in ruby

generate random string in ruby

generate uuid in ruby

get a random element from an array in ruby

get a random number from a normal distribution with a mean of 0 and a standard deviation of 1 in ruby

get a sample of 5 elements from an array in ruby

get a sample of 5 elements from an array with replacement in ruby

get a sample of 5 elements from an array without replacement in ruby

get a uniformly distributed random number in ruby

get system architecture in ruby

get system boot time in ruby

get system boot time in milliseconds in ruby

get system boot time in minutes in ruby

get system boot time in seconds in ruby

get system cpu frequency in ruby

get system cpu temperature in ruby

get system cpu temperature in celsius in ruby

get system cpu temperature in fahrenheit in ruby

get system cpu usage in ruby

get system free disk space in ruby

get system free memory in ruby

get system name in ruby

get system platform in ruby

get system release in ruby

get system total memory in ruby

get system type in ruby

get system uptime in ruby

get the first 3 characters and last 5 characters in a string then combine into a new string in ruby

gimme a function that take only the first two elements of an array passed to it, even though it can take a variable amount of arguments in ruby

give `1 <= n < 65` as a range in julia in ruby

give `class grains def self.square(n) 2 ** (n - 1) end` like here: `class phrase < struct.new(:text)` a struct like: in ruby

give a one-liner function in julia that checks if a sentence is a pangram and it is case insensitive in ruby

give a regex-based isogram checker in ruby in ruby

give it as a struct: `class series def initialize(string) @string = string end def slices(n) raise argumenterror if n > @string.length @string.each_char.each_cons(n).map(&:join) end end` in ruby

give me a function that does this: input: [1,[2,3,null,4],[null],5] output: [1,2,3,4,5] in ruby

give ruby version of this python code: `lambda s:len(s)==len({*s.lower()}-{*str(56**7)})` in ruby

give struct version: `class series def initialize(series) = @series = series def slices(n) raise argumenterror if n > @series.length @series.chars.each_cons(n).map(&:join) end end` in ruby

give the regex version (such as def isogram?(w) = p !w.match(/(.)(?:\1|-|\d)/i) for ` def isogram?(词) = 词.downcase.scan(/\w/) == 词.downcase.scan(/\w/).uniq` in ruby

given a string (that is also capitalized) input to a function, how to test whether it includes letters 'a', 'g', 't', and 'c'? in ruby

given a string of digits, output all the contiguous substrings of length n in that string in the order that they appear. in ruby

given a string representing a matrix of numbers, return the rows and columns of that matrix. in ruby

here sum all fibonacci terms that are even: `def fibona(n) return n if n < 2 fib_sequence = [1, 1] (1...n).each do |_| fib_sequence << fib_sequence[-1] + fib_sequence[-2] end fib_sequence end` in ruby

hg in ruby

how do i add these two element-wise so the result is another 3-element array? [*1..3] + [*4..6] in ruby

how do i collect the letters only from "\"five quacking zephyrs jolt my wax bed.\"" without using .downcase method? in ruby

how do i convert this to an array of strings: `[0, [0, 1], {foo: 0}] * ', '` in ruby

how do i count each word in "wa ta're ba 100" such that (two words contracted like `ta're` are counted as one) and numbers are also counted as words? in ruby

how do i count how often each word occurs in "wa ta're wa ba 100 ba ba 100 200" such that (two words contracted like `ta're` are counted as one) and numbers are also counted as words? in ruby

how do i fix this ` attr_accessor :age, :member alias_method :initialize, :age=` such that initilizer method has member set to false? in ruby

how do i select only the letters in "\"five quacking zephyrs jolt my wax bed.\""? in ruby

how to 3 × 1 10 100 such that the result is 3 30 300? in ruby

how to calculate prime numebrs in ruby

how to change `cols = %w(black, brown, red)` to this: `cols = { "black" => '0', "brown" => '1', "red" => '2'}` in ruby

how to change method name with alias? in ruby

how to check if a number is in an array? like `5 in [1, 3, 5]`? in ruby

how to check if an array is empty? in ruby

how to compute the sum in [{:l=>8},{:s=>7, :m=>2}]? in ruby

how to compute the total found in this array? [{:s=>3, :m=>7, :l=>8},{:s=>7, :m=>2}] in ruby

how to create a 2 x 3 matrix in apl? in ruby

how to create this: 'abcdefghijklmnopqrstuvwxyz' using a shortcut code in ruby

how to do a one-liner c# function? in ruby

how to extract only the words from this string: "[\"\\\"blink\\\",\", \"\\\"freakonomics\\\",\", \"\\\"outliers\\\"\"]" in ruby

how to find multiples of two numbers not exceeding some n? in ruby

how to fix `print ([2, 4, 6].all?(:&even?)` in ruby

how to fix? `[1, 10, 100].map(&:prod * 3)` in ruby

how to iterate over "thequickbrownfoxjumpsoverthelazydog" to check if it represents every letter of the english alphabet? in ruby

how to iterate over each elements of "the quick brown fox jumps over the lazy dog" to check if they exist in [*'a'..'z']? ignore white space in ruby

how to produce the equivalent apl's `10×⍳2+5` ? in ruby

how to return the total value of all the hash values of three hashes, each of which is an element of an array using map or some shorter code? in ruby

how to return the total value, as an integer, of all the hash values of three hashes, each of which is an element of an array? in ruby

how to salt a password in ruby

how to select first two elements of an array and loop over them? in ruby

how to sum [{ a: 5, b: 10, c: 15 }, {}, {q: 67}] such the i don't get the "undefined method `values' for nil:nilclass" error in ruby

how to sum hash values in an array of five hashes? in ruby

how to sum the values in [{ a: 5, b: 10, c: 15 }, {}, { q: 67 }] in ruby

how to sum this if the hash is inside an array? [{ a: 5, b: 10, c: 15 }] in ruby