So would something like
hash(x::ProblemInstance,h::Uint64=uint(0)) = 3*hash(x.h)+2*hash(x.J)+hash(x.
properties)+h
be a reasonable thing to do? If the h,J,and properties fields are the same,
this yields the same hash, but I'm not sure if we might run into problems
with hashes potentially overlapp
oops
On Monday, October 20, 2014 11:36:32 PM UTC-4, Stefan Karpinski wrote:
>
> julia> int32('A')
> 65
>
>
> On Mon, Oct 20, 2014 at 10:59 PM, Sal Mangano > wrote:
>
>> Here is one:
>>
>> *julia> **convert(Int32,'A')*
>>
>> *65*
>>
>>
>> *julia> **Int32('A')*
>>
>> *ERROR: type cannot be construc
julia> int32('A')
65
On Mon, Oct 20, 2014 at 10:59 PM, Sal Mangano wrote:
> Here is one:
>
> *julia> **convert(Int32,'A')*
>
> *65*
>
>
> *julia> **Int32('A')*
>
> *ERROR: type cannot be constructed*
>
> On Monday, October 20, 2014 11:50:01 AM UTC-4, Ben Arthur wrote:
>>
>> are there any circum
Here is one:
*julia> **convert(Int32,'A')*
*65*
*julia> **Int32('A')*
*ERROR: type cannot be constructed*
On Monday, October 20, 2014 11:50:01 AM UTC-4, Ben Arthur wrote:
>
> are there any circumstances where int32(x) should fail and
> convert(Int32,x) succeed? i have a strange case of this
Are there any facilities to program with .net or access the windows api?
Perhaps some sort of LLVM to .net?
If not, would it be conceivably possible to do pycall->pywin32->write a
short script-> compile into a exe?
If anyone is still listening, I recently faced a similar problem likely
caused by trying to install IHaskell (big mistake). And, yes,
Pkg.build("IJulia") seemed to do the trick.
On Friday, April 11, 2014 10:12:57 AM UTC-4, Isaiah wrote:
>
> Could you check to see if this is corrected automatical
Defining == is not enough. You have to define a hash(x) method, otherwise it
will default to hashing based on the memory address (which changes between
runs).
Hello all,
I have defined a structure type ProblemInstance with 3 fields (h,J, and a
dictionary called properties), and which to store a dictionary that
actually uses these structures as the key. I've defined == for these
objects as follows:
==(a::ProblemInstance,b::ProblemInstance)=(a.h==b.h)
if anyone has tracked any of the developments of Koding,
a cloud DevelopmentEnvironment hosted on Amazon EC2
(http://blog.koding.com/2014/10/new-release/)
{ https://prod.koding.com/ }
and then gone on to wonder if you could get Julia
running in that remote Ubuntu 14.04 environ
On Monday, October 20, 2014 2:40:52 PM UTC-4, Gustavo Camilo wrote:
>
> I'm wondering if anyone has experience with how NLopt and Julia interface.
> Basically I've made my objective function return *Inf* if for the current
> parameter choices the value of the objective Does Not Exist or can't b
Same thing here. I suggest asking on the ess mailing list at
https://stat.ethz.ch/mailman/listinfo/ess-help
Best,
Ista
On Mon, Oct 20, 2014 at 1:19 PM, Andrew Dabrowski wrote:
> In the ESS wiki page for Julia (https://github.com/emacs-ess/ESS/wiki/Julia)
> it says:
>
>> To look up for a topic [s
Hi all,
I'm wondering if anyone has experience with how NLopt and Julia interface.
Basically I've made my objective function return *Inf* if for the current
parameter choices the value of the objective Does Not Exist or can't be
computed, can Julia's NLopt implementation handle this properly? I
In the ESS wiki page for Julia
(https://github.com/emacs-ess/ESS/wiki/Julia) it says:
To look up for a topic [sic] in julia standard library reference: C-c C-d
> C-r.
>
But when I try that I get "Sorry, not implemented for dialect Julia".
An I doing something wrong or has that feature simpl
Yes, I should have checked that first, I didn't realize readbytes was that
slow.
Comparing python's os.urandom with f.read() - os.urandom() is about 80x
faster when reading short byte lengths (<4096) (but at 4096+ bytes
os.urandom() and f.read() have the same runtimes).
Nevertheless python f.r
Thank you too, Isaiah.
After I've made it work (pre-declaring the variable) I will see if I can
make it faster.
Thank you, Jacob, I've seen it now.
Yes, I waited until 0.3.1 was released before backporting this. I did that
because I was afraid that I might swap a performance problem for a bug
right before tagging a new release.
kl. 18:19:13 UTC+2 mandag 20. oktober 2014 skrev Stefan Karpinski følgende:
>
> I'm confused – this does appear to
Seems like the right call.
On Mon, Oct 20, 2014 at 12:26 PM, Ivar Nesje wrote:
> Yes, I waited until 0.3.1 was released before backporting this. I did that
> because I was afraid that I might swap a performance problem for a bug
> right before tagging a new release.
>
> kl. 18:19:13 UTC+2 mandag
I'm confused – this does appear to have been backported. Was it backported
after 0.3.1 was released? If so, using 0.3.2 should fix it.
On Mon, Oct 20, 2014 at 11:54 AM, Simon Byrne wrote:
> This seems to be fixed in the 0.4 branch. I think this is the same issue
> as this:
>
> https://github.com
This seems to be fixed in the 0.4 branch. I think this is the same issue as
this:
https://github.com/JuliaLang/julia/issues/8088
the fix for which apparently just missed the 0.3.1 backport.
-simon
>
>>
https://github.com/JuliaLang/julia/issues/8742
Let me know if it needs any changes. FWIW I'm on Julia 0.3.1, OS X.
Cheers!
*Sebastian Good*
On Mon, Oct 20, 2014 at 11:43 AM, Jameson Nash wrote:
> Can you open an issue? It looks like it's still emitting a gc-frame, even
> though it isn't usi
are there any circumstances where int32(x) should fail and convert(Int32,x)
succeed? i have a strange case of this buried inside an @eval inside a
module and am wondering whether it's something peculiar to my situation or
worth creating a minimal test case and filing a bug report. windows7,
j
Can you open an issue? It looks like it's still emitting a gc-frame, even
though it isn't using it.
On Monday, October 20, 2014, Sebastian Good <
sebast...@palladiumconsulting.com> wrote:
> Your'e right! Sloppy case-minimizing-and-pasting; my apologies. I forgot
> to define the conversion. Try th
Your'e right! Sloppy case-minimizing-and-pasting; my apologies. I forgot to
define the conversion. Try this
julia> import Base.convert
julia> bitstype 8 Foo
julia> convert(::Type{Foo}, x::Uint8) = reinterpret(Foo, x)
convert (generic function with 443 methods)
julia> @code_llvm convert(Uint8, 0
julia> bitstype 8 Foo
julia> convert(Foo, 100)
ERROR: `convert` has no method matching convert(::Type{Foo}, ::Int64)
in convert at base.jl:9
How fast do you want to raise an error? ;-)
On Mon, Oct 20, 2014 at 11:18 AM, Sebastian Good <
sebast...@palladiumconsulting.com> wrote:
> When I've run
When I've run benchmarks with custom bitstypes, they seem to run very
quickly. But I wouldn't have guessed it from the machine code I can preview
at the REPL. Can anyone explain what I'm seeing here? (I'm dumping
@code_llvm as it's more instructive; the @code_native is very large).
Converting a
This is normal/expected behavior. Check out the manual chapter on the scope
of variables:
http://docs.julialang.org/en/latest/manual/variables-and-scoping/.
In particular, there are certain "blocks" of code that introduce a scope
and once that scope is done, all variables that were introduced with
Yes: the variable does not live past the scope where it is defined. If you
want the value outside the loop, you should pre-declare the variable.
Also, you should take a close look at two parts of the manual (at least):
the performance section, and the "major differences from other languages"
secti
This is my first question here. I'm starting with Julia, so sorry if this
is too simple.
I am used to programming mostly in Matlab, so the following behavior has
surprised me.
I use the variable jjmin inside a for loop (not a function). After the loop
finishes, its value is "forgotten"! Is thi
Thanks!
On Monday, October 20, 2014 8:15:01 PM UTC+7, Tim Holy wrote:
>
> mtime
>
> --Tim
>
> On Monday, October 20, 2014 05:17:13 AM Tony Fong wrote:
> > Is there a way to get the modification time of a file (path given)?
> >
> > Right now I'm using this round-about way:
> >
> > using Date
mtime
--Tim
On Monday, October 20, 2014 05:17:13 AM Tony Fong wrote:
> Is there a way to get the modification time of a file (path given)?
>
> Right now I'm using this round-about way:
>
> using Dates
> refreshtimestr = readall( `stat -f "%m" $f`)
> refreshtime = unix2datetime( int( chomp( refr
Is there a way to get the modification time of a file (path given)?
Right now I'm using this round-about way:
using Dates
refreshtimestr = readall( `stat -f "%m" $f`)
refreshtime = unix2datetime( int( chomp( refreshtimestr ) ) )
I'm not sure how portable this is (it works okay on a mac).
> Just checked the sparse matrix section of the Julia manual. My question
> is whether what you explained only applies to actually declared sparse
> matrix?
Yes. (This is probably what most people think when hearing "sparse
matrix": a matrix stored in some sparse matrix format.)
> In my cas
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