I might be wrong, but to me Formatting.jl looks next to useless. The "sprintf" functions it provides only accept one parameter. The main function provided is `sprintf1()`, but even the very clumsy `generate_formatter()` function fails at the most basic tasks:
julia> fmtrfunc = generate_formatter( "%10.3f %6d %3d" ) ERROR: Only one AND undecorated format string is allowed in generate_formatter at /home/daniel/.julia/v0.3/Formatting/src/cformat.jl:23 I really don't understand why sprintf() is such a big deal. If C can have one, why can't Julia? I understand the argument that you might want to rewrite the implementation later. Fine. Just call the function "__temp_sprintf()" and put it in a package called "FunctionThatWillGoAwayLater". I don't care. I just want to be able to print formatted strings without a ton of needless hassle. On Tuesday, 22 September 2015 10:03:52 UTC+2, Tomas Lycken wrote: > > By the way, you might also note that the Formatting.jl package is written > and maintained by people who are all active contributors to the main > language repo, and very active members of the community. Even if it's > "external" in terms of how you install it, it's by no means external "in > spirit". > > // T > > On Tuesday, September 22, 2015 at 10:01:24 AM UTC+2, Tomas Lycken wrote: >> >> Julia is a young language. >> >> This comes with a lot of benefits - for example, it's possible to do >> things *right* from the start. We're currently in a phase where there is a >> multitude of possible solutions to every problem that arises, and we >> honestly don't know which solution proves to be the best one. Testing >> various solutions out in packages, outside of the base distribution, where >> they can compete for popularity, and keep building on top of each-other >> until we reach something which we believe not only is adequate, but >> *really* hits the sweet spot. In other words: sure, formatting numeric >> output is fundamental, but it's a problem with a large solution space, and >> we don't want to lock in on one path yet. >> >> But Julia's young age also means that there are lots of problems that >> aren't really solved yet, or that have solutions proposed but not >> implemented, etc. For the future, there are plans to include some packages >> (which ones have not been decided, or AFAIK really even discussed) in a >> sort-of "base distribution", so they will be installed upon installation of >> Julia, and available with a single `using` statement. But the >> infrastructure for this is not in place yet, and even if it were, there >> would still be lots of reasons not to make a final decision on which >> packages make the cut until we approach a 1.0 release of the language. >> >> So yeah, it might seem silly to have to install a package just to get >> fine-grained control of numeric output formatting, but, at least for now, >> that's part of what one could call Julia's "Package Deal" ;) >> >> // T >> >> On Tuesday, September 22, 2015 at 9:43:05 AM UTC+2, Ferran Mazzanti wrote: >>> >>> Thanks, that seems to work. >>> Still it amazes me how Julia, being a language made for numerical >>> calculations, does not natively support a simple mechanism to print/write >>> large bunches of numbers. I've been in the numerical world for 20+ years >>> and I know printing lots of numbers is something you get on a daily >>> basis. I know now the formatting package can help on that (thanks :), >>> what I do not like is the idea of having to install every time a new package >>> to get added functionality. I understand there are things that have to >>> go to external packages because of its limited or specialized use, but >>> come on... printing number os definitely not one of those. >>> Just my 2cents :) >>> >>> On Monday, September 21, 2015 at 10:52:52 AM UTC+2, Michael Hatherly >>> wrote: >>>> >>>> https://github.com/JuliaLang/Formatting.jl might help. >>>> >>>> — Mike >>>> >>>> On Monday, 21 September 2015 10:46:31 UTC+2, Ferran Mazzanti wrote: >>>>> >>>>> Dear all, >>>>> >>>>> I could use some help here, because I can't believe I'm not able to >>>>> easily print formatted numbers under Julia in a easy way. What I try to >>>>> do >>>>> is to write a function that, given a vector, prints all its components >>>>> with >>>>> a user-defined format. I was trying something of the form >>>>> >>>>> function Print_Vec(aux_VEC,form_VEC) >>>>> form_VEC :: ASCIIString >>>>> str_VEC = "%16.8f" >>>>> for elem_VEC in aux_VEC >>>>> str_VEC += @sprintf(form_VEC,elem_VEC) >>>>> end >>>>> return str_VEC >>>>> end >>>>> >>>>> However, that doesn't work because it looks like the first argument in >>>>> @sprintf must be a explicit string, and not a variable. >>>>> Is there anything I can do with that? >>>>> >>>>> Thanks a lot for your help. >>>>> >>>>
