string-literals

Two Questions. When we declare literal strings, we search whether there is the same string in string pool of heap. Is this also an interning (method intern of class String )? In my thought, each literal string declaration needs a binary search or something so it costs at least log(n) when n is number of existing strings in the pool. And if there are many strings in the pool, it may be high cost. (maybe tradeoff of searching cost and memory?) On this point of view, it might be dangerous to declare mant literal strings. How significant is this searching cost and why java is designed in this way

How would I escape a whole line in YAML? I want to have json='{"title": "travis_saulshanabrook_site","key": "'$(cat ~/.ssh/id_rsa.pub)'"}' in a list, but I can't get it to parse into a string. I can put single quotes around the whole line, but then I would have to escape every single quote in my string, making it very hard to read. The string will be run as a bash command in Travis CI The most elegant solution is to use the literal style | indicator, with the - modifier to strip the final newline. That way there are no extra quotes necessary. If this scalar happens to be the only thing in a

In Python one can write r"a\nb" in order to prevent the \n from being interpreted as an escape sequence for newline. Is there something similar in Julia? And what about string interpolation like "$variable" , is there a way to prevent it? I know one can simply write "a\\nb" and "\$variable" in Julia, but I would like to write a lot of LaTeX strings without having to care to proper escape every backslash \ and dollar $ characters... (In Julia, r"..." creates a regular expression.) From Julia 0.6 we have raw"\a$variable" Ok, I just found out that since one can easily create non-standard string

I want to convert a string literal like r"r'\nasdf'" to a string ( '\\nasdf' in this case). Another case: r"'\nasdf'" to '\nasdf' . I hope you get it. This is important, because I have a parser of python scripts, that wants to know the exact contents of a string literal. Is eval a clever solution? The string literals are filtered before (with tokenize ) and should not cause security liabilities. Aren't there any nobler solutions than evaluating a literal? A parser library maybe? Edit : Added other examples, to avoid misunderstandings. You want the ast module : >>> import ast >>> raw = r"r'

This question already has answers here : Closed 12 months ago . Why are compound literals in C modifiable (1 answer) Why do I get a segmentation fault when writing to a string initialized with “char *s” but not “char s[]”? (17 answers) Does the C99 standard permit writing to compound literals (structs)? It seems it doesn't provide writing to literal strings. I ask about this because it says in C Programming: A Modern Approach, 2nd Edition on Page 406. Q. Allowing a pointer to a compound literal would seem to make it possible to modify the literal. Is that the case? A. Yes. Compound literals