Programming-Idioms

History of Idiom 8 > diff from v59 to v60

Edit summary for version 60 by daxim:
[Perl] add docs, more precise explanation

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Version 59

2019-09-27, 19:28:17

Version 60

2019-09-29, 17:27:02

Idiom #8 Initialize a new map (associative array)

Declare a new map object x, and provide some (key, value) pairs as initial content.

Idiom #8 Initialize a new map (associative array)

Declare a new map object x, and provide some (key, value) pairs as initial content.

Extra Keywords

table dictionary hash

Extra Keywords

table dictionary hash

Perl

Perl

Code

my %map = ( 
    name=>'Roboticus',
    "foo bar"=>"joe"
);

Code

my %x = ( 
    name => 'Roboticus',
    'foo bar' => 'joe'
);

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The '=>' operator turns the left side item into a string, so you don't need to quote the value unless it has spaces or other special characters in it.

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The '=>' operator autoquotes the word on its left if it begins with a letter or underscore and is composed only of letters, digits and underscores. Otherwise quotes are required.

Doc URL

http://p3rl.org/op#Comma-Operator

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History of Idiom 8 > diff from v59 to v60

Version 59

Version 60

Idiom #8 Initialize a new map (associative array)

Idiom #8 Initialize a new map (associative array)

Extra Keywords

Extra Keywords

Code

Code

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Doc URL

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