idi527
How I would create a multiline string without a trailing line break with Elixir?
I’ve been re-reading swift book again and noticed that multiline strings there don’t have a trailing line break, unlike in elixir
iex(2)> """
...(2)> asdf
...(2)> """
"asdf\n"
I wonder how I would create a multiline string without a trailing line break with elixir.
In swift I can add a line break by adding a newline
let lineBreaks = """
This string starts with a line break.
It also ends with a line break.
"""
which is the same as
line_breaks = """
This string starts with a line break.
It also ends with a line break.
"""
in elixir.
I feel like swift’s way is a bit more consistent and gives freedom to chose how to end the string.
Is there a reason for elixir’s multiline string to be different? I see only one advantage to this approach:
ab = """
a
b
"""
c = """
c
"""
ab <> c == """
a
b
c
"""
In swift it would be
"""
a
bc
"""
but can be fixed by adding a new line at the end of ab.
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benwilson512
iex(7)> """
...(7)> foo\
...(7)> """
"foo"
thbar
In case someone stumbles on this thread: the “\” at the end to avoid newline still appears to work with recent versions of Elixir.
iex(1)> """
...(1)> foo\
...(1)> """
"foo"
iex(2)> """
...(2)> foo
...(2)> """
"foo\n"
NobbZ
"""
Foo"""
# or even
"""Foo"""
I prefer the elixir behaviour over the swift one, as elixir complies with POSIX that text files should always end in a newline.
OvermindDL1
Uh, if Elixir worked that way I’d be fine with it, but it doesn’t, and based on the way Elixir’s does work I’d prefer Swift’s way as well:
╰─➤ iex
Erlang/OTP 20 [erts-9.2] [source] [64-bit] [smp:6:6] [ds:6:6:10] [async-threads:10] [hipe] [kernel-poll:false]
Interactive Elixir (1.6.1) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> """
...(1)> Foo"""
** (SyntaxError) iex:2: invalid location for heredoc terminator, please escape token or move it to its own line: """
iex(1)> """Foo"""
** (SyntaxError) iex:1: heredoc start must be followed by a new line after """
the heck forum syntax coloring borked ^.^;
NobbZ
Hmmm? Did they remove this syntax? I think I used it in some old code… Perhaps I’m misremembering things though…
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