Comparison of programming languages (associative array): Difference between revisions

Revision as of 21:15, 31 July 2020

Revision as of 21:19, 31 July 2020

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Associative arrays that can use objects as keys, instead of strings and integers, can be implemented with the <code>SplObjectStorage</code> class from the Standard PHP Library (SPL).<ref>http://php.net/SplObjectStorage</ref>

=== [[Pike (programming language)|Pike]] ===

[[Pike (programming language)|Pike]] has built-in support for Associativeassociative Arraysarrays, which are referred to as mappings. Mappings are created as follows:

<syntaxhighlight lang=Pike>

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Accessing and testing for presence in mappings is done using the indexing operator. So <code>phonebook["Sally Smart"]</code> would return the string <code>"555-9999"</code>, and <code>phonebook["John Smith"]</code> would return 0.

Iterating through a mapping can be done using either <code>foreach</code>:

<syntaxhighlight lang=pike>

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</syntaxhighlight>

Elements of a mapping can be removed using <code>m_delete</code>, which returns the value of the removed index:

<syntaxhighlight lang=pike>