Usually you should be using eachline instead of readlines, especially for
large files, because they return an iterator and does not allocate strings
for the individual lines, so that garbage collection can free the
intermediary strings.
kl. 04:19:25 UTC+1 tirsdag 11. mars 2014 skrev Peter
OK, running
push!(DL_LOAD_PATH, /usr/local/lib/)
has improved the situation a little: now we get this error:
ERROR: ccall: could not find function CVodeCreate in library
libsundials_cvode
in ode at /home/thomas/.julia/Sundials/src/Sundials.jl:250
At least the shared library is recognised
Do you mean, all you want is addpath(dirname) = push!(LOAD_PATH, dirname)?
Or something different?
--Tim
On Tuesday, March 11, 2014 04:17:17 AM J Luis wrote:
I've been here before too (and will come back)
An addpath would be a far far simpler to use solution.
Terça-feira, 11 de Março de
Your code works for me, so I think there is still a problem on your system
configuration.
The error is about the C function `CVodeCreate`, not the Julia function
with the same name, and apparently Julia finds the sundials library, but it
does not contain the function.
Try to run
The first three parameters to ccall are special and are eval'd at compile
time. To get the effect you are looking for, declare the return type as
Ptr{Void}, and then call `convert(ret_type, ptr)`
On Tue, Mar 11, 2014 at 11:57 AM, J Luis jmfl...@gmail.com wrote:
I want to parameterize the
Hello everyone,
This in regard to the 'Syntax Checker' project that has been mentioned on
the ideas page.
I really like the idea and would like to work more on it. I am currently
working on a semester long project to develop a compiler independently and
hence have an idea as to what goes into
Thanks, works beautifully.
Terça-feira, 11 de Março de 2014 13:15:31 UTC, Jameson escreveu:
The first three parameters to ccall are special and are eval'd at compile
time. To get the effect you are looking for, declare the return type as
Ptr{Void}, and then call `convert(ret_type, ptr)`
Do you mean, all you want is addpath(dirname) = push!(LOAD_PATH,
dirname)?
By itself it would be already useful (imagine when one do not know this
solution and have to search the docs for it)
Or something different?
Precisely. What I was referring was a way to declare paths that
At least I think I need a string (;)) since:
1. The input to a RSA encryption is typically a string to be encrypted.
This string is converted to a large integer which is then encrypted. This
large integer is then dumped to a string so that it can be transmitted,
saved to file etc.
2. The PKCS
do these not do what you need (or form the basis for it)?
julia convert(Vector{Uint8}, utf8(hello world))
11-element Array{Uint8,1}:
0x68
0x65
0x6c
0x6c
0x6f
0x20
0x77
0x6f
0x72
0x6c
0x64
julia bytestring(convert(Vector{Uint8}, utf8(hello world)))
hello world
On Tuesday, 11 March
Thanks Andrew,
That is exactly the kind of obvious-in-retrospect type of solution I was
hoping for. I can adapt this to my needs.
Cheers,
Robert
Den tisdagen den 11:e mars 2014 kl. 16:10:53 UTC+1 skrev andrew cooke:
do these not do what you need (or form the basis for it)?
julia
no problem. don't forget the padding!
On Tuesday, 11 March 2014 12:16:44 UTC-3, Robert Feldt wrote:
Thanks Andrew,
That is exactly the kind of obvious-in-retrospect type of solution I was
hoping for. I can adapt this to my needs.
Cheers,
Robert
Den tisdagen den 11:e mars 2014 kl.
Yes, but the problem I had was rooted in:
julia convert(UTF8String, Uint8[0x41,0x42, 128])
ERROR: invalid UTF-8 sequence
in convert at utf8.jl:155
/Robert
Den tisdagen den 11:e mars 2014 kl. 16:21:00 UTC+1 skrev andrew cooke:
actually, it seems convert works both ways.
julia
sorry, last line should be share the ENCRYPTED data, otherwise what i
wrote is awfully confusing.
On Tuesday, 11 March 2014 12:32:50 UTC-3, andrew cooke wrote:
well that's because it's an invalid character sequence.
if it started as a valid utf8 string, you won't see that or unencoding.
Yes, I see where I went wrong now. I will base64 encode the uint8 array,
pass that around and then reverse on the other side.
Sorry for the noise,
Robert
Den tisdagen den 11:e mars 2014 kl. 16:32:50 UTC+1 skrev andrew cooke:
well that's because it's an invalid character sequence.
if it
no problem. really don't forget the padding.
http://rdist.root.org/2009/10/06/why-rsa-encryption-padding-is-critical/
On Tuesday, 11 March 2014 12:37:34 UTC-3, Robert Feldt wrote:
Yes, I see where I went wrong now. I will base64 encode the uint8 array,
pass that around and then reverse on
For now, I suspect the easiest way to do this is to switch back and forth
between immutable types and vectors by using linear indexing in the fields of a
type, then linear indexing within each field. Here’s a specific example of how
a generic function might work:
immutable Foo
actually, it seems convert works both ways.
julia convert(UTF8String, [0x41,0x42])
AB
On Tuesday, 11 March 2014 12:10:53 UTC-3, andrew cooke wrote:
do these not do what you need (or form the basis for it)?
julia convert(Vector{Uint8}, utf8(hello world))
11-element Array{Uint8,1}:
Yep. This is what I was hoping for too. However, just to be clear I would
want include(test0.jl) to work when the directory which contains test0.jl
is in LOAD_PATH.
Cheers,
Ethan
On Tuesday, March 11, 2014 7:43:47 AM UTC-7, J Luis wrote:
Do you mean, all you want is addpath(dirname) =
Maybe we should stop exporting include, so that people use require and
LOAD_PATH is always searched?
On Tuesday, March 11, 2014, Ethan Anderes ethanande...@gmail.com wrote:
Yep. This is what I was hoping for too. However, just to be clear I would
want include(test0.jl) to work when the
I want to make a bit of an announcement for people who don't browse the
Github issues list. I've been working on setting up continuous integration,
a la Travis, but for Windows using AppVeyor
-
I have given a thought to creating a Julia wrapper for MagickWand (Issue
#69https://github.com/timholy/Images.jl/issues/69). In this context is there
any available generator that can help me out?
For either PythonMagickWand or MagickWand? I found Clang.jl that I can use
as a ready reckoner for
Yes, as Stefan has pointed out, making your own lexer/parser is not likely
to be the best way to approach this project (and perhaps we should make
that more explicit).
Your best bet here is to have a look at the existing Julia parser - get a
feel for things, then think about improvements you
Does this work?
julia a=abcdefgh
abcdefgh
julia reinterpret(Int64, a.data)
1-element Array{Int64,1}:
7523094288207667809
On Tuesday, 11 March 2014 16:07:35 UTC+5:30, Robert Feldt wrote:
Implementing simple RSA crypto in pure Julia (not for actual sec-sensitive
use) but for low-sec
Well, given that this thread is under the name of ... OpenCV, why not
using OpenCV itself? The floodfill function does exactly that.
Terça-feira, 11 de Março de 2014 18:06:46 UTC, Siddha Ganju escreveu:
I have given a thought to creating a Julia wrapper for MagickWand (Issue #
69
I have been out of town for ten days and today did a git pull. I then did
the usual make and got what appears to be a normal make except near the end
I get the following spew:
LINK src/support/libsupport.a
CC src/flisp/flisp.o
CC src/flisp/julia_extensions.o
LINK
Seems useful and I did not know about it. Strings in my case can be longer
than 64 bits though but this is a useful building block. Thanks!
Den tisdagen den 11:e mars 2014 kl. 20:13:05 UTC+1 skrev Avik Sengupta:
Does this work?
julia a=abcdefgh
abcdefgh
julia reinterpret(Int64, a.data)
This is Great! There is an unfortunate correlation between being a open
source contributor and not using the most popular operating system among
users.
You should post this to the julia-dev list. I would assume that fewer
people skip posts on the lower traffic list, and when this is up and
Reinterpret works for any length stings. See that the return type is
Array{Int,1}.
Just be careful when using reinterpret because (I believe) you will get the
native byte order (Litle endian/Big endian), and you should be careful to
follow the specification of the algorithm/transport
This and related topics seem to crop up a lot, e.g. almost concurrently
this discussion happened:
https://groups.google.com/d/msg/julia-users/xbsdu8Ob4cw/2Vtyo9CFhYoJ
And Kevin opened this issue to improve the documentation:
https://github.com/JuliaLang/julia/issues/6082
It is a bit focused on
Siddha Ganju,
If you would like to work on the OpenCV project I would stick to wrapping
OpenCV. I don't think that this is a particularly good project for a
beginner as it will invariably involve julia c interop, a c / c++ shim,
knowledge of OpenCV data type internals, and julia code
Hi all,
New to Julia and tried to install with the instructions from
https://github.com/stevengj/julia-mit/blob/master/README.md but IPython
kept crashing. There was an error during the building of IPython but I
can't seem to find a way around it. Sorry guys I'm unfamiliar with this.
Here's
This is really great. As someone who has gone most of his life without
using Windows, how easy is this to set up if you are not a knowledgeable
window's developer? I'm thinking about sometimes hard to build library
dependencies, like libgit2 or an opencl vendor implementation. I would try
Hi,
Just complied julia and am getting a segmentation fault when trying to use
PyCall. Should I file an issue with PyCall or am I doing something wrong
here? Thanks. -Ethan
julia Pkg.status()
1 required packages:
- PyCall0.4.2
julia versioninfo()
Julia Version
This looks like it was fixed a couple hours ago, see
https://github.com/JuliaLang/julia/issues/6097#issuecomment-37348594
Jake
On Tuesday, March 11, 2014 5:16:19 PM UTC-4, Ethan Anderes wrote:
Hi,
Just complied julia and am getting a segmentation fault when trying to use
PyCall. Should
There already is a wrapper for MagickWand, we just don't use if for more than
saving/loading images. MagickWand does not support multidimensional images
well, so I'm quite hesitant to start relying on MagickWand for more than I/O.
(I think OpenCV is better in this regard.)
For this specific
Great approach John! I was not aware of the linear indexing of type fields,
that opens a lot of possibilities. Thanks
On Tue, Mar 11, 2014 at 3:51 PM, John Myles White
johnmyleswh...@gmail.comwrote:
For now, I suspect the easiest way to do this is to switch back and forth
between immutable
Regarding warm-up task.
You could take a look at the bugs found by coverity some time ago.
https://groups.google.com/d/topic/julia-dev/Lw4GF34VGbE/discussion
On Tuesday, 11 March 2014 14:33:23 UTC+1, Siddhant Jain wrote:
Hello everyone,
This in regard to the 'Syntax Checker' project that
I'm not totally sure what you mean. A column of a DataFrame is a vector, so one
natural way to convert the column to a string would be to join all of the
entries using join:
using DataFrames
df = DataFrame(A = 1:10)
join(df[:A], ::)
Is that what you're looking for?
-- John
On Mar 11, 2014,
Hi,
That file downloads fine for me, and I was able to install IJulia on a
clean system several days ago.
Could you try downloading it manually, to eliminate any local network
issues? Also please send versioninfo().
On Tue, Mar 11, 2014 at 4:45 PM, Ivan Tan ivan@gmail.com wrote:
Hi all,
It might be useful to add functionality equivalent to IPython's 'run'
magic. From http://ipython.org/ipython-doc/dev/interactive/tutorial.html:
Running and
Editinghttp://ipython.org/ipython-doc/dev/interactive/tutorial.html#running-and-editing
The %run magic command allows you to run any
So this seems like silly question, but i'm looking to convert a column in a
dataframe to a string and I don't see how to do that.
Any help?
Thank you!
Jason
I fear print(Sys.dlliist()) is not an option in julia. There's lots of
other options (Sys,MACHINE, Sys.init, etc) but no Sys.dllist().
My Julia install is Version 0.3.0-prerelease+308 if that is relevant :)
Also, nm /usr/local/lib/libsundials_cvode.so just gives me a long list like
this:
Will Kearney created an initial GDAL wrapper
https://github.com/wkearn/GDAL.jl .GDAL is an extremely powerful library to
read a lot of different formats, multi-bands included. It supports also
(the lib) image resizing.
Terça-feira, 11 de Março de 2014 22:14:20 UTC, Tim Holy escreveu:
There
no, i'm sorry. I have a vector that's eltype is Float64, it has values
that i'd like to replace with the words that describe their values. right
now when assigning them i'm getting errors since it's type is Float and it
needs to be string.
so i'd like to convert the first column in the
I know there has to be a clever way to do this in Julia but I'm stumped. I
have a 1d array of tuples and I want to extract the third element from each
row of the array. Here is an example of what I'm working with:
julia experArr 20-element Array{(Any,Any,Any),1}:
(4000,0.97613,1.6e6)
Here’s one way:
A = {
(4000,0.97613,1.6e6),
(2000,0.97613,80.0),
(8000,0.97613,3.2e6),
(1000,0.97613,40.0)
}
Float64[row[3] for row in A]
— John
On Mar 11, 2014, at 9:34 PM, Matthew Crews matthewcr...@gmail.com wrote:
(4000,0.97613,1.6e6)
(2000,0.97613,80.0)
Here’s one way:
A = {
(4000,0.97613,1.6e6),
(2000,0.97613,80.0),
(8000,0.97613,3.2e6),
(1000,0.97613,40.0)
}
Float64[row[3] for row in A]
— John
On Mar 11, 2014, at 9:34 PM, Matthew Crews matthewcr...@gmail.com wrote:
(4000,0.97613,1.6e6)
(2000,0.97613,80.0)
Here's one way to do that: UTF8String[string(x) for x in df[:A]]
-- John
On Mar 11, 2014, at 6:48 PM, Jason Solack jaysol...@gmail.com wrote:
no, i'm sorry. I have a vector that's eltype is Float64, it has values that
i'd like to replace with the words that describe their values. right now
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