Thanks Larry, that's helpful. Just for discussions sake, here's a quick
macro that calls my proposed `fmt` method under the hood, and does
something similar to what you showed. What do you think about this style
(and what would you do differently)?
using Formatting
macro fmt(args...)
expr = Expr(:block)
expr.args = [:(print(fmt($(esc(arg))), "\t\t")) for arg in args]
push!(expr.args, :(println()))
expr
end
And then an example usage:
In:
x = 1010101
y = 555555.555555555
fmt_default!(width=15)
@fmt x y
fmt_default!(Int, :commas)
fmt_default!(Float64, prec=2)
@fmt x y
Out:
1010101 555555.555556
1,010,101 555555.56
On Tuesday, September 22, 2015 at 3:08:35 PM UTC-4, lawrence dworsky wrote:
>
> Hi Tom
>
> What I like about it is that you can just use print *, dumbly and it
> always provides useful, albeit not beautiful, results. When I'm writing a
> program, I use print statements very liberally to observe what's going on -
> I find this more convenient than an in-line debugger.
>
> As the last line in my program below shows, it's easy to switch to
> formatted output when you want to. The formatting capability is pretty
> thorough, I'm just showing a simple example.
>
> This Fortran program doesn't do anything, it just illustrates what the
> print statement produces:
>
>
> real x, y
> integer i, j
> complex z
> character*6 name
>
> x = 2.6
> y = -4.
> i = 36
> j = -40
> z = cmplx(17., 19.)
> name = 'Larry'
>
> print *, x, y, i, j, z
> print *, 'x = ', x, ' and j = ', j
> print *, 'Hello, ', name, j
> print '(2f8.3, i5)', x, y, j
>
> stop
> end
>
>
> The output is:
>
> 2.60000 -4.00000 36 -40
> (17.0000, 19.0000)
> x = 2.60000 and j = -40
> Hello, Larry -40
> 2.600 -4.000 -40
>
>
> Is this what you are looking for?
>
> Larry
>
>
>
> On Tue, Sep 22, 2015 at 11:57 AM, Tom Breloff <[email protected]
> <javascript:>> wrote:
>
>> Larry: can you provide details on exactly what you like about Fortran's
>> print statement? Did it provide good defaults? Was it easy to customize?
>>
>> On Tue, Sep 22, 2015 at 12:55 PM, LarryD <[email protected]
>> <javascript:>> wrote:
>>
>>> Something I miss from Fortran is the very convenient default "print *,
>>> ..... " It handled almost 100% of my needs while working on a program and
>>> was easily replaced by real formatting when the time came. Is there any
>>> chance that Julia could get something like this?
>>>
>>> Thanks
>>>
>>>
>>> On Monday, September 21, 2015 at 3:46:31 AM UTC-5, 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.
>>>>
>>>
>>
>
