There is nothing wrong with for loops in julia. I think sturm would be prettier
if you removed `n=length(D)` and instead used `t=zeros(D)` and `for
i=2:length(D)`. Julia creates a Range object for iteration, so the length
function will only execute once.
countnegatives+=1
Do you really need
There is also MutableStrings.jl
at https://github.com/tanmaykm/MutableStrings.jl.
Hello all,
After seeing all the good project proposals for GSoC, I realized than only
one or two lucky projects will eventually be worked on during the summer.
What will happen to the remaining?
Would it be a good idea to keep them at julialang.org as inspiration for
e.g. a bachelor's or
above is typed code is wrong. it's actually:
$(Expr(:lambda, {:r},
{{:n,:#s7,:#s6,:i},{{:r,TypedRange{S,I,E},0},{:n,Any,2},{:#s7,Any,2},{:#s6,(Any,Any),18},{:i,Any,18}},{}},
:(begin # /home/andrew/.julia/v0.3/IntModN/src/Range.jl, line 44:
n = 0 # line 45:
#s7 =
Hey Alex,
Sorry for the huge delay on this. Not sure if you've tried an updated
version of the package since, but this should be fixed now.
Best,
Rob
On Monday, January 20, 2014 6:45:34 AM UTC+1, Alex Zlov wrote:
I'm trying to run NeHe examples from GLUT package and get following
console
Just posting a link to the relevant issue for any others that might come
across this: https://github.com/rennis250/SDL.jl/issues/3
Best,
Rob
On Tuesday, February 25, 2014 4:26:20 AM UTC+1, Joshua Olson wrote:
The SDL package looks promising, except I don't know which SDL 1.2 library
to
sorry for the noise, but explaining it to someone else made me realise i
still didn't have it right. below it the expanded typed. native and llvm
code. above are wrong. this is for the 10 -1 1 loop.
it's pretty clean - no unboxing in the native code (at least, no QWORDs
which i think is
Hello colleagues,
this conversation is covering one of the most dangerous things that you can
do in SW engineering:
- How can i do X?
- This is not meant to be used. But i have a work around for you.
You can be absolutely sure that this will propagate and be the new default
way.
(I'm
On Thursday, March 20, 2014 5:32:15 PM UTC-4, Paweł Biernat wrote:
Taking into account your suggestions I came up with an ad-hoc
implementation tailored for my needs. Instead of computing
Laguerre(n,1,t-n) I compute the whole expression
Laguerre(n,1,t-n)*exp(-(t-n))*(t-n) via a function
We try to be helpful, and answer the questions as asked. We also provide
advice for improvements, if the question is likely to lead to a poor
program.
Julia gives you as a programmer lots of power, and if you don't follow
advice, you might end up in trouble.
If you change the internal
Absolutely - the plan is to keep the ideas list around so that people who
want to get involved have a nice set of projects to pick from. Aside from
anything else it's probably a good idea to separate actual issues and
would be cool projects.
That said, if we're keeping the ideas list around we
On Thu, Mar 20, 2014 at 10:59 PM, J Luis jmfl...@gmail.com wrote:
Well, ... thanks
But naive question though. If we can do it with elaborate tricks, why
not just have a clean simple way?
The bottom line for whether something should be mutable or not is
psychological: is the thing a value
Thanks to Ivar and Stefan for the great explanations. I think often we hear
don't do this, don't do that, but it's great to hear some good anecdotes
and reasoning. Also excited to see the improvements in Strings under the
hood.
-Jacob
On Fri, Mar 21, 2014 at 11:37 AM, Stefan Karpinski
I too want acknowledge all your work to explain why things work the way
they do. But I want also say that I did read the docs before asking. It
just happened that I missed that first part on the Strings that talk
about strings immutability and error message does not help much leading us
to the
On Friday, March 21, 2014 11:37:33 AM UTC-4, Stefan Karpinski wrote:
Getting back to your original example, I would counter that you never
really want to just do something like replace the 16th character of this
string in isolation. How did you figure out the index 16? What you really
Ah wonderful, thankyou both.
Ivar; you're quite right about being able to get rid of the array for t, I
was just following term for term the mathematical expression.
Jiahao; your code is indeed much more elegant! Thank you for pointing me in
its direction. How efficient is the
W dniu piątek, 21 marca 2014 13:44:17 UTC+1 użytkownik Steven G. Johnson
napisał:
It would be better to avoid the NaNs in the first place (which come when
you multiply 0 * Inf, from an underflow times an overflow). For one thing,
floating-point exceptions are slow. For another thing,
I try to do this:
@pyimport Crypto.Cipher.AES as AES
@pyimport Crypto.Hash.SHA256 as SHA256
key = hello world
hash = SHA256.new()
hash[:update](key)
secret = hash[:digest]()
cipher = AES.new(secret)
but I get the following error:
PyError (Ptr) type 'exceptions.UnicodeDecodeError'
Hi,
I am starting using Julia, and I'm having a simple problem. I have some
images on a directory, and I want to iterate over each one, open it with
Images' imread(), and store it on an array.
I cannot create a empty array and append images to it. How can I achieve
this?
Thanks,
Paulo
Is someone curating a list somewhere of published work that uses Julia?
It is prominently placed on our homepage: http://julialang.org/publications/
Ivar
kl. 19:07:40 UTC+1 fredag 21. mars 2014 skrev Jonathan Malmaud følgende:
Is someone curating a list somewhere of published work that uses Julia?
You can grow arrays, but you need to use push!() to do so. You could also
use an array comprehension to construct the array.
On Friday, March 21, 2014 1:07:47 PM UTC-5, Paulo Castro wrote:
Hi,
I am starting using Julia, and I'm having a simple problem. I have some
images on a directory,
Actually, you can create an empty array and append (though in Julia
vernacular, it's push!).
a = Image[]
for image in images
push!(a, image)
end
Or something along those lines.
-Jacob
On Fri, Mar 21, 2014 at 2:07 PM, Paulo Castro
p.oliveira.cas...@gmail.comwrote:
Hi,
I am starting
Why can you not create an empty array?
It might not be totally obvious, but `a = []` creates a special array, that
can store nothing. You might have better success with specifying a type `a
= Any[]`, or use the special Array{Any,1} syntax `a = {}`.
kl. 19:07:47 UTC+1 fredag 21. mars 2014 skrev
Also, append is called push!() in Julia
push!(a, imread())
Regards
Ivar
kl. 19:13:49 UTC+1 fredag 21. mars 2014 skrev Ivar Nesje følgende:
Why can you not create an empty array?
It might not be totally obvious, but `a = []` creates a special array,
that can store nothing. You might
Well, those are papers about Julia. I meant papers that just use Julia as
an implementation language in the course of doing other research. Sorry for
not being clear.
On Friday, March 21, 2014 11:10:12 AM UTC-7, Ivar Nesje wrote:
It is prominently placed on our homepage:
I realised that about 10 seconds after pushing send. Strange how doing
something irreversible clears the mind. You might search for citations of
those two papers.
Ivar
kl. 19:19:11 UTC+1 fredag 21. mars 2014 skrev Jonathan Malmaud følgende:
Well, those are papers about Julia. I meant papers
Sure, there are always exceptions. In that particular case, you may want to
work with the data as mutable arrays of bytes, rather than as strings. Did
you want to replace the 16th byte or replace the *character* starting at
the 16th byte? What if that's a multibyte character? What if the 16th byte
On Fri, Mar 21, 2014 at 12:12 PM, J Luis jmfl...@gmail.com wrote:
I too want acknowledge all your work to explain why things work the way
they do. But I want also say that I did read the docs before asking. It
just happened that I missed that first part on the Strings that talk
about strings
Levi is the an author on the Foulds paper I mentioned, so maybe that's what
you're thinking of.
I gather Simon Kornblith and and Tim Holy are using Julia for experimental
neuroscience data analysis, so obviously the lead time for any publications
that result from that will be longer than the
3 sections is appropriate
* About Julia
* Using Julia
* Using Julia, but non free access (if we are going to list those at all).
kl. 21:40:37 UTC+1 fredag 21. mars 2014 skrev Stefan Karpinski følgende:
I think we should split the publications page into two sections: papers
about Julia at the
Yes, I think that's a really great idea. I'll change the URL from
/gsoc/2014 to /projects once we've decided on which projects we can fund
(sadly it won't be nearly enough of them) and then for next year, we can
just keep using the /projects URL and it will already be nicely put
together and
On the other hand, saying 4 == 2 + 2 or go home is perfectly reasonable
;-)
On Thu, Mar 20, 2014 at 6:47 PM, John Myles White
johnmyleswh...@gmail.comwrote:
To me, this actually explains why the i == 1 do_stuff() idiom feels so
unnatural: you'd never mix a declarative statement with an
Well, from this perspective, it makes sense why those strings should not
be mutable.
But from other perspectives, making strings immutable contradicts with
how natural languages are used. For instance, after I said I am a
professor, I want to say I am a scientist, or perhaps I change my
I quickly acclimated to Stefan's idiom and now happily read and write
code containing it. That said, it did throw me for a loop when first
learning the language. I'm not too big of a fan of reserving another
keyword for an optional syntax… but I could perhaps support its inclusion
if it
Le samedi 22 mars 2014 à 05:08 +0800, cnbiz850 a écrit :
Well, from this perspective, it makes sense why those strings should not
be mutable.
But from other perspectives, making strings immutable contradicts with
how natural languages are used. For instance, after I said I am a
Perhaps the right thing to do here then is to make replace accept a range
of characters to replace:
str = I am a scientist
replace(str,8:16,scholar)
?
On Fri, Mar 21, 2014 at 5:21 PM, Milan Bouchet-Valat nalimi...@club.frwrote:
Le samedi 22 mars 2014 à 05:08 +0800, cnbiz850 a écrit :
I also made a typo in my question; the parameter I'm referring to is the
parameter of Vector in x, i.e. T in x::Dict{Int, Vector{T}}.
On Friday, March 21, 2014 5:44:19 PM UTC-4, Jarrett Revels wrote:
Here's a gist clarifying what I'm trying to do in my second question:
You're assuming that strings are specifically for holding sentences, which
is not the case. That's one possible use case, but certainly not the only
one. If you want to do this sort of thing, using a mutable array of words
seems much more appropriate anyway. You can easily wrap this in a Sentence
I kind of like that idea, actually.
On Fri, Mar 21, 2014 at 5:10 PM, Matt Bauman mbau...@gmail.com wrote:
I quickly acclimated to Stefan's idiom and now happily read and write
code containing it. That said, it did throw me for a loop when first
learning the language. I'm not too big of a
*The replace() function is pretty cool, but for this case all we need is
indexing and concatenation:*
*julia **s = I am a scientist.*
*I am a scientist.*
*julia **s = s[1:7] * scholar * s[end:end]*
*I am a scholar.*
On Sat, Mar 22, 2014 at 9:23 AM, Stefan Karpinski ste...@karpinski.org wrote:
I kind of like that idea, actually.
On Fri, Mar 21, 2014 at 5:10 PM, Matt Bauman mbau...@gmail.com wrote:
I quickly acclimated to Stefan's idiom and now happily read and write
code containing it. That said, it
What would return from the statement if it were false? nothing? Like if I
use it assigning a variable? I definitely see the attraction as a one liner
though.
-Jacob
On Mar 21, 2014 9:52 PM, Chris Foster chris...@gmail.com wrote:
On Sat, Mar 22, 2014 at 9:23 AM, Stefan Karpinski
It can take a bit of work to get this just right. In many cases, it is
not worthwhile to check that the types are the same (to allow
duck-typing). But I use the following code pattern to accomplish what
you were trying for:
type Bar{T}
x::T
end
type Foo{B:Bar, V:Vector}
y::Vector{B}
Given the similarity in syntax, I'd expect it to behave the same as a
normal if ... end
On Sat, Mar 22, 2014 at 12:05 PM, Jacob Quinn quinn.jac...@gmail.com wrote:
What would return from the statement if it were false? nothing? Like if I
use it assigning a variable? I definitely see the
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