Literal strings consist of all the characters between the opening and
ending quotes. That includes the end of line characters if they occur
between the quotes. The \n is the way Julia prints embedded newline
characters in strings to make the character visible similar to the way an
embedded " character is printed as \".
julia> a = "abcdef
ghij"
"abcdef\nghij"
julia> show(a)
"abcdef\nghij"
julia> print(a)
abcdef
ghij
To split a string literal over more than one line without including the end
of line in the string you catenate two separate strings:
julia> "abcdef" *
"ghij"
"abcdefghij"
Cheers
Lex
On Thursday, August 27, 2015 at 9:29:37 PM UTC+10, J Luis wrote:
>
> Yes, and we can also do
>
> julia> replace(@sprintf("one line
> another line"), '\n', "")
> "one line another line"
>
> but this is ugly and should not be necessary.
> The more I think on this more it looks like a bug to me.
>
> quinta-feira, 27 de Agosto de 2015 às 05:39:59 UTC+1, Tero Frondelius
> escreveu:
>>
>> Maybe the trivial solution is the best solution here:
>>
>> julia> string = "some text here"
>> "some text here"
>>
>> julia> string = string * " some more text here"
>> "some text here some more text here"
>>
>> julia>
>>
>>
>>
>> On Thursday, August 27, 2015 at 2:36:17 AM UTC+3, J Luis wrote:
>>>
>>>
>>> "\e" is the shorthand for typing the escape character, you will probably
>>>> want to escape the backslash like so: `\\`.
>>>>
>>>
>>> Yes, it was a wrong copy past. Other option is to declare the variable as
>>>
>>>
>>>
>>>> It looks like you may be trying to create a command string, but you've
>>>> used string delimiters (") instead of cmd delimiters (`).
>>>>
>>>
>>> Right, its a command string but it needs to be a string that is later
>>> passed to the external program who will parse it. For example, this does a
>>> DouglasPeucker line simplification of a ... random line
>>>
>>> julia> t = gmt("simplify -T0.2", rand(50,2))
>>> 40x2 Array{Float64,2}:
>>> 3.05622e-5 0.225977
>>> 0.43428 0.902914
>>> 0.290981 0.230531
>>> 0.757591 0.71268
>>> ...
>>>
>>>
>>>> Julia always uses the entire literal string (include embedded newlines)
>>>> until the closing " character). Because some characters (like a newline)
>>>> cannot be directly printed, Julia shows it as \n when representing it in
>>>> ""
>>>> quotes to display the variable. Similarly, it prints a literal " as \" so
>>>> that you can tell that the " is part of the string and not indicating the
>>>> termination of the string.
>>>>
>>>
>>> So, one can't create strings without that '\n' whose construct spans
>>> over more than one line?
>>>
>>>>
>>>>
>>>> On Wed, Aug 26, 2015 at 7:00 PM J Luis <[email protected]> wrote:
>>>>
>>>>> I need to build a command as a string to pass to an external program
>>>>> (GMT), so I started to build it this way
>>>>>
>>>>> julia> ps = "V:\example_23.ps";
>>>>>
>>>>> julia> name="Rome";
>>>>>
>>>>> julia> "pscoast -Rg -JH90/9i -Glightgreen -Sblue -A1000 -Dc -Bg30
>>>>> -B+t\"Distances from " * name * " to the World\" -K
>>>>> -Wthinnest > " * ps
>>>>>
>>>>> "pscoast -Rg -JH90/9i -Glightgreen -Sblue -A1000 -Dc -Bg30\n
>>>>> -B+t\"Distances from Rome to the World\" -K -Wthinnest > V:\
>>>>> example_23.ps"
>>>>>
>>>>>
>>>>> Two things here. Shouldn't the \" show up as quote char in the string
>>>>> (that is , without the '\')?
>>>>>
>>>>> But the second is worst. Why is it adding that '\n' (note it after the
>>>>> '-Bg30')?
>>>>> Because of this spurious '\n' the call to the GMT program fails. It
>>>>> does work if I create the cmd string in a single line but I should not be
>>>>> forced to do so
>>>>>
>>>>> Thanks
>>>>>
>>>>> Joaquim
>>>>>
>>>>>
>>>>>
