How Can I Handle String Containing "$" Symbol in Julia
I Have Extracted a Substring from a File Containing Strings That Starts with "$" and I Want to Replace the '$' Symbol with "$" So That It Looks Like "\$Sel...
I have extracted a substring from a file containing strings that starts with "$" and I want to replace the '$' symbol with "$" so that it looks like "\$sel:incPreTxn" and "\$!" as I will be later converting it to latex code. Please suggest me how can I handle "$" symbol in Julia.
I tried to use occursin and replace function that also didn't help and got LoadError. ERROR: LoadError: syntax: invalid interpolation syntax: "$""
Here is the sample code for reference:
str = "$sel:incPreTxn"
if occursin("$", str)
str = replace(str, "\$:" => "\\$")
end
1 Answer
If I understood correctly you want to prefix the dollar sign that may be present in a string with a backslash symbol.
As the dollar symbol is "special" in Julia within a string (e.g. it allows interpolation of variables), you need to prefix it with a backlash in Julia too. And because the backlash is "special" too, you need to prefix it with a backlash as well.
This would do the job:
julia> str = "\$sel:incPreTxn"
"\$sel:incPreTxn"
julia> str2 = replace(str, "\$" => "\\\$")
"\\\$sel:incPreTxn"
While both str and str2 are displayed with 1 and 3 backslash, they are actually with 0 and 1 respectively, as you can see by printing them or saving them to a file:
julia> print(str)
$sel:incPreTxn
julia> println(str2)
\$sel:incPreTxn
Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.
