String interpolation: Difference between revisions

Revision as of 03:19, 4 June 2013

Revision as of 19:47, 20 June 2013

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'''String interpolation''' is a form of [[Quasi-quotation]], common in many [[programming language]]s which make heavy use of [[String (computer science)|string]] representations of data, such as [[Python_(programming_language)|Python]], [[Ruby (programming language)|Ruby]], [[PHP]], [[Perl]], [[Nemerle]] etc. It means to insert a string or replace a variable with its value. It makes string formatting and specifying contents more intuitive.<ref>http://perlmeme.org/howtos/using_perl/interpolation.html</ref>

== Examples ==

Line 133:

I have 4 apples

I have 7 fruits

</source>

=== Nemerle ===

<source lang="csharp">

def apples = 4;

def bananas = 3;

Console.WriteLine($"I have $apples apples");

Console.WriteLine($"I have $(apples + bananas) fruits");

</source>

You can also use advanced formatting features like this:

<source lang="csharp">

def fruits = ["apple", "banana"];

Console.WriteLine($<#I have ..$(fruits; "\n"; f => f + "s")#>);

</source>

The output will be:

<source lang="text">

apples

bananas

</source>