Use Hash#key? instead of Hash#has_key? and Hash#value? instead of Hash#has_value?. According to Matz, the longer forms are considered deprecated. [link] # bad hash.has_key?(:test) hash.has_value?(value) # good hash.key?(:test) hash.value?(value)...
array.last(4) # => [4, 5, 6, 7] ---4.2 Hashes--- hash的索引即key可以是任何类型:符号,字符串,正则表达式。 h = {'dog' => 'canine', 'cat' => 'feline'} h['dd'] = 'bbbb' #添加元素 h[12] = 'sdfsf' #添加元素 #from Ruby 1.9以后,如果key是符合,可写成 h = {:dog => ...
Blockchain Lite- Build your own blockchains with crypto hashes; revolutionize the world with blockchains, blockchains, blockchains one block at a time. Ciri- Ruby implementation of Ethereum. MoneyTree Database Tools connection_pool- Generic connection pooling for Ruby, that can be used with ...
This also means that keys within a hash have to be unique, otherwise we will overwrite the old values.In terms of performance, hashes have a lookup time of O(1), which means that finding a value in a hash by its key will not be dependent on the size of the hash, nor on the ...
# unshift appends elements to the beginning of an array alpha = ["a","b","c"] alpha.unshift("x","y","z") puts alpha.inspect# ["x", "y", "z", "a", "b", "c"] Hashes This type of collection is also called a dictionary or an associative array. ...
# unshift appends elements to the beginning of an array alpha = ["a","b","c"] alpha.unshift("x","y","z") puts alpha.inspect# ["x", "y", "z", "a", "b", "c"] Hashes This type of collection is also called a dictionary or an associative array. ...
{and}deserve a bit of clarification, since they are used for block and hash literals, as well as string interpolation. For hash literals two styles are considered acceptable. The first variant is slightly more readable (and arguably more popular in the Ruby community in general). The second ...
ruby-hashdiff (1.1.0-1) [universe] library for computing the smallest difference between two hashes ruby-hashery (2.1.2-1.1) [universe] facets-bread collection of Hash-like classes ruby-hashie (5.0.0-3) [universe] small collection of tools that make hashes more powerful ruby-hashie-forbid...
For validation errors, #errors will return an Array of Hashes with the detailed information returned by the API.AuthenticationOctokit supports the various authentication methods supported by the GitHub API:Basic AuthenticationUsing your GitHub username and password is the easiest way to get started ...
When you’re programming, you’ll use and encounter various data structures including arrays and hashes. Eventually, you’ll want to iterate through each item in an array or hash to extract or transform the information in these data structures. The ability to… Ruby For Loop As developers...