Pset 2

[kameeko]

In Pset 2, after I define SymArrow2, and overload the size and getindex methods to handle SymArrow2 types, I test the * method with a random matrix and vector of complex numbers. In version 0.4.6, I get the message:

LoadError: MethodError: `A_mul_B!` has no method matching A_mul_B!(::Array{Complex{Float64},1}, ::SymArrow2{Complex{Float64}}, ::Array{Complex{Float64},1})

but in version 0.5.0-rc4 (accessed via JuliaBox), it runs without complaint. Am I defining SymArrow2 or the overloaded methods incorrectly, or are the fall-back methods that we're intended to use different between the two versions?

[dpsanders]

Hi,

Apparently this indeed works only on 0.5.

Best
David

On 20 Sep 2016 16:57, "kameeko" [email protected] wrote:

In Pset 2, after I define SymArrow2, and overload the size and getindex
methods to handle SymArrow2 types, I test the * method with a random matrix
and vector of complex numbers. In version 0.4.6, I get the message:

LoadError: MethodError: A_mul_B! has no method matching A_mul_B!(::Array{Complex{Float64},1}, ::SymArrow2{Complex{Float64}}, ::Array{Complex{Float64},1})

but in version 0.5.0-rc4 (accessed via JuliaBox), it runs without
complaint. Am I defining SymArrow2 or the overloaded methods incorrectly,
or are the fall-back methods that we're intended to use different between
the two versions?

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[kameeko]

I installed Julia using the Ubuntu-specific installation instructions, so I have v0.4.6 on my computer. Is there a way to have multiple versions of Julia on the same computer, so that I can switch between different versions without being online (using JuliaBox)?

[dpsanders]

Yes you can have multiple versions: you can use the generic Linux binary and give it a different name, e.g. julia5.

[kameeko]

Woah, and Jupyter knows about both even though they are in completely different places. This is sweet.

[dpsanders]

Yes ;)

[alanedelman]

i also was kind of surprised how well that works

On Tue, Sep 20, 2016 at 6:48 PM, David P. Sanders [email protected]
wrote:

Yes ;)

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