On Friday, February 7, 2014 8:39:41 PM UTC-5, Michael Schnall-Levin wrote:
similarly if i do:
d = Dict{Int32, Int32}()
d[convert(Int32, 3)] = 5
get(d, 3, 0)
---output
0
This seems like a bug to me; if you have Dict{K,V}, Julia should
automatically convert the key value to K in
Does Julia have or plan to include the ability to process a continuous
stream of data (think DSP operations on data from a device/port/pipe/etc.).
Are there possibilities for a graphical GUI with connected functional
nodes, etc.?
When I run Julia programs (*.jl files) via the supplied julia.bat, any
error message pops up in a command window, which gets immediately closed,
so there is no chance I can read it. An extra line in the batch file solves
the program: if errorlevel 1 pause
That is, the julia.bat could look like
This kind of thing seems to be coming up almost daily on the mailing list...
I think everything is in place to build this kind of functionality. As far as
interacting with the device goes, you can always continuously poll the device.
But presumably your device supports DMA, and presumably you'd
Hello everyone,
I just got started with Julia, and I wanted to try to wrap a C/C++ library
to Julia to check whether it would work out for my purposes.
I tried out many ways of passing arrays and other objects from C back to
Julia.
So far it seems that it takes a lot of extra code if I want
According to the help, usual Dicts use the `isequal` function. There is
also the ObjectIdDict which uses the === (I think):
julia st1 = asdf
asdf
julia st2 = asdf
asdf
julia stt = st1
asdf
julia st1==st2, st1===st2, isequal(st1, st2)
(true,false,true)
julia st1==stt, st1===stt, isequal(st1,
This is a totally reasonable thing to do. You just have to be careful
that objects are rooted across other object allocations; passing julia
objects around as Ptr{Void} hides them from the GC.
If Any is used as the return type of the ccall, the result will be
treated as a julia reference and you
Hi Jeff, thanks for the quick reply.
If Any is used as the return type of the ccall, the result will be
treated as a julia reference and you can skip
unsafe_pointer_to_objref.
If returning Any, would the GC take care of it?
A variant of this is to allocate the array in julia, and pass
Thanks, John.
I would also want to note that MLBase.jl is going to be moved to JuliaStats
too, which is going to provide basic support of machine learning.
All these moves are for the purpose of coordinating the efforts of
developing machine learning tools (see
I wrote the (admittedly primitive) attached savefigppt() function to save
multiple PyPlot images to a Powerpoint-compatible .pptx file (works on both
Windows and Linux). When adding an image to a file, if the file already
exists then the image will be added to a new page appended at the end.
I'm trying to use the time() function within string interpolation, but it's
not producing the desired result:
julia time()
1.391893797590157e9
julia $(time())
1.391893808023869e9
How do I get the float representation?
I don't know if is a bug because your created a Dict from Integer keys to
Integer values
and inserted a value 1 with key 3 of type Int64, then another with 3 of
type Int32 value 5
if your say
julia d[3]
1
julia d[int32(3)]
5
maybe Dict has to do more check to see if the values for keys are
To formulate my question a bit more specifically (about the last part of my
email)
Suppose I want to call jl_new_struct() to instantiate a 'type', I need to
provide the type, so I guess
I have to pass the right jl_datatype_t *, which might be found
with jl_get_global().
Now, jl_get_global()
All right, thank you all very much for the help.
On Wednesday, February 5, 2014 5:39:49 PM UTC-5, Micah McClimans wrote:
Julia is returning an ARPACKException(-3) with the following line:
(pVals,pVecs)=eigs(covariance;nev=sigComponents,sigma=1,which=LM,tol=0.0
,ritzvec=true,maxiter=1000)
On Saturday, February 8, 2014 2:21:36 PM UTC-5, Carlos Becker wrote:
I tried out many ways of passing arrays and other objects from C back to
Julia.
So far it seems that it takes a lot of extra code if I want to return, for
example, a simple double-array or an array of types (eg structs)
Hi Steven,
I tried that before, I know it is possible, but if the size is unknown to
julia, it must be returned as another variable, which makes
coding more difficult if many of such return arrays are needed.
That is why I think it would be interesting to see the julia-api side of
it, to see
I just wasted several hours on this. I kept getting errors when I tried to
use this to create some filter coefficients:
julia b = ones(Float32, filtlen, 1)
10x1 Array{Float32,2}:
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
I finally realized that two in Array{Float32,2}.
It's not a two-column vector, it's a rank-2 tensor i.e. a matrix, the
number of arguments to ones gives the number of dimensions, e.g. ones(T,10)
will give a 1 dimensional vector of 10 elements, ones(T,10,1) gives a 10x1
matrix, ones(T,10,10) gives a 10x10 matrix, ones(T,10,1,1) gives a 10x1x1 3
18 matches
Mail list logo
