CODEWITHSUNDEEP
.netstringf#literals
knocte
knocte

Reputation: 17969

How to write an inline big string in F#

In C# I can use:

string myBigString = @"

<someXmlForInstance>
  <someChild />
</someXmlForInstance>

";

How to do this in F#?

Upvotes: 14

Views: 2071

Answers (3)

Joel Mueller
Joel Mueller

Reputation: 28764

In F# 3.0, VS 2012, support was added for triple-quoted strings.

In a triple-quoted string, everything between triple-quotes ("""...""") is kept verbatim; there is no escaping at all. As a result, if I want to have a bit of XAML as a string literal, it’s easy:

let xaml = """ 
<StackPanel xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
            Name="mainPanel"> 
  <Border BorderThickness="15.0" BorderBrush="Black"> 
    <StackPanel Name="stackPanel1"> 
      <TextBlock Text="Super BreakAway!" FontSize="24" HorizontalAlignment="Center" /> 
      <TextBlock Text="written in F#, by Brian McNamara - press 'p' to pause" 
                 FontSize="12" HorizontalAlignment="Center" /> 
      <Border BorderThickness="2.0" BorderBrush="Black"> 
        <Canvas Name="canvas" Background="White" /> 
      </Border> 
    </StackPanel> 
  </Border> 
</StackPanel>"""

Upvotes: 16

George Mamaladze
George Mamaladze

Reputation: 7931

Try just :

let str1 = "abc
     def"
let str2 = "abc\
     def"

For more information see: http://msdn.microsoft.com/en-us/library/362314fe.aspx

Upvotes: 1

M. Mennan Kara
M. Mennan Kara

Reputation: 10222

If preceded by the @ symbol, the literal is a verbatim string. This means that any escape sequences are ignored, except that two quotation mark characters are interpreted as one quotation mark character.

Source: Strings (F#)

Upvotes: 2

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