julia

Join dict to string


How would in join a dictionary in Julia similar to like what one of the Python ways is:

 diction = {"DC": 4,
           "NH": 1,
           "MI": 36,
           "MO": 4989,
           "FL": 157,
           "UT": 13,
           "NV": 9,
           "CA": 110,
           "WV": 6,
           "NY": 39,
           "ME": 1,
           "SC": 26,
           "KY": 71}
stri = ' | '.join(map(lambda x: '%2.2s %5.5s' % (str(x[0]), str(x[1])), diction.items()))

What I have come up with:

diction = Dict(["DC" => 4
                "NH" => 1,
                "MI" => 36,
                "MO" => 4989,
                "FL" => 157,
                "UT" => 13,
                "NV" => 9,
                "CA" => 110,
                "WV" => 6,
                "NY" => 39,
                "ME" => 1,
                "SC" => 26,
                "KY" => 71])
stri = [@sprintf("%2.2s %5.5s | ",st,ct) for st,ct in keys(diction),values(diction)]

Yields:

ERROR: syntax: invalid iteration specification

OUTPUT:

DC    4 | NH    1 | MI    36 | MO    4989 | FL    157 | UT    13 | NV    9 | CA    110 | WV    6 | NY    39 | ME    1 | SC    26 | KY    71

Solution

  • In recent Julia versions, you need to pull in the sprintf macros with "using Printf". In addition, when you iterate a dictionary, you need to wrap the key-value pair in parentheses (st, ct) (which Python does not require; this also applies to enumerated for loops). In addition, you should still use a join here, or the line will end with your '|' separator.

    This then becomes:

    using Printf
    diction = Dict(["DC" => 4,
                "NH" => 1,
                "MI" => 36,
                "MO" => 4989,
                "FL" => 157,
                "UT" => 13,
                "NV" => 9,
                "CA" => 110,
                "WV" => 6,
                "NY" => 39,
                "ME" => 1,
                "SC" => 26,
                "KY" => 71])
    stri = join([@sprintf("%2.2s %5.5s", st, string(ct)) for (st,ct) in diction], " | ")
    println(stri)