Expression Interpolation in String Literals

∟Expression Interpolation in String Literals

This section describes expression interpolation in 'string' literals.

Expression interpolation is supported using the following escape sequence in string literals.

If \ is followed by (...), everything enclosed in the round brackets is evaluated as string(...), and the resulting string will included in the string literal.

Examples of expression interpolations in string literals:

name = "John Doe";

# using expression interpolation
write("Hello \(name), how are you?");

# using the addition operation 
# same result as above, but less readable
write("Hello "+name+", how are you?");

# using expression interpolation
# readability is not very good
write("1-2*3/4 = \(1-2*3/4)");

# using the addition operation 
# readability is not any better
write("1-2*3/4 = "+(1-2*3/4));

# adding a variable
# readability is much better
result = 1-2*3/4;
write("1-2*3/4 = \(result)");