Also called associative arrays, they are similar to Arrays, but where an Array uses integers as its index, a Hash allows you Wbat use any object type.
Hashes enumerate their values in the order that the corresponding keys were inserted. If no default is set nil is used.
Note that no brackets are used below. If a hash is the last argument on a method call, no braces are needed, thus creating a really clean interface: Person.
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A user-defined class may be used as a hash key if the hash and eql? By default, separate instances refer to separate hash keys. A typical Waht of hash is based on Toledo swinger clubs object's data while eql?
Public Class Methods Hash[ key, value, In the first form, keys and values occur in pairs, so there must be an even of arguments. The second and third form take a single argument which is either an array of key-value pairs or an object convertible to a hash. If this hash is subsequently accessed by a key that doesn't correspond to Maydena teens in sex hash entry, dors value returned depends on the style of new used to create the hash.
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In the first form, the access returns nil. If obj is specified, this single object will be used for all default values. If a dooes is specified, it will be called with the hash object and the key, and should return Chat adult Rock Springs default value. It is the block's responsibility to store the value in the hash if required.
Returns converted hash or nil if obj cannot be converted for any reason. If not found, returns the default value see Hash::new for details.
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Gay chat florida Returns the key-value pair two elements array or nil if no match is found. See Array assoc. It is not possible to set the default to a Proc that will be executed on each key lookup. If the key is not found, returns the default value.
If the optional code block is given and the key is not found, pass in the key and dp the result of block. If no block is given, an enumerator is returned instead. If the key can't be found, there are several options: With no other arguments, it will raise an KeyError exception; Free sex line 95648 default is given, then that will be returned; if the optional code block is specified, then that will be run and its result returned.
That is, for every key or value that is an array, extract its elements into the new array. Unlike Array flattenthis method does not flatten recursively by hsh.
The optional level argument determines the level of recursion to flatten. Two hashes with the same content will have the same hash code and will compare using eql? If the value is not found, returns nil. See also Hash values.
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Returns the first key-value pair two-element array that matches. See also Array rassoc.
If values of key objects have changed since they were inserted, this method will reindex hsh. If Hash rehash is called while an iterator is traversing the hash, an RuntimeError will be raised in nash iterator.