Skip to content

headers for verbatim / triple quoted string and slicing #17054

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Feb 12, 2020
Merged

headers for verbatim / triple quoted string and slicing #17054

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
4f22b53
headers for verbatim / triple quoted string and slicing
gfritz Feb 11, 2020
84ecf1b
make h2 to appear in sidebar
gfritz Feb 12, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 6 additions & 0 deletions docs/fsharp/language-reference/strings.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -37,8 +37,12 @@ String literals are delimited by the quotation mark (") character. The backslash
> [!NOTE]
> Being constrained to a range of 0 - 255 (0xFF), the `\DDD` and `\x` escape sequences are effectively the [ISO-8859-1](https://en.wikipedia.org/wiki/ISO/IEC_8859-1#Code_page_layout) character set, since that matches the first 256 Unicode code points.

## Verbatim Strings

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.

## Triple Quoted Strings

Additionally, a string may be enclosed by triple quotes. In this case, all escape sequences are ignored, including double quotation mark characters. To specify a string that contains an embedded quoted string, you can either use a verbatim string or a triple-quoted string. If you use a verbatim string, you must specify two quotation mark characters to indicate a single quotation mark character. If you use a triple-quoted string, you can use the single quotation mark characters without them being parsed as the end of the string. This technique can be useful when you work with XML or other structures that include embedded quotation marks.

```fsharp
Expand All @@ -53,6 +57,8 @@ In code, strings that have line breaks are accepted and the line breaks are inte

[!code-fsharp[Main](~/samples/snippets/fsharp/lang-ref-1/snippet1001.fs)]

## String Indexing and Slicing

You can access individual characters in a string by using array-like syntax, as follows.

[!code-fsharp[Main](~/samples/snippets/fsharp/lang-ref-1/snippet1002.fs)]
Expand Down