[julia-users] How do I turn a string into a variable
I want to be able to write:
@makevar("life", 42)
which will expand to
life = 42
How do I do this?
Why do I want to do it? Because it would be cool to have a feature like in
Octave where I could load an HDF5 file, and it automatically sets the
variables from the file.
Re: [julia-users] How do I turn a string into a variable
It's easy to write a macro that takes a static literal string and makes a
variable out of it.
It's much harder (maybe impossible) to write a macro that takes in a variable
that happens to be bound to a string value and to make a variable out of the
value you happen to have stored in that variable.
Another way to put it: macros don't exist inside of the world of values -- they
only live in the world of syntax.
Could you get a similar (and cleaner) effect by populating a Dict instead?
-- John
On Dec 17, 2014, at 5:37 AM, Zeta Convex wrote:
> I want to be able to write:
> @makevar("life", 42)
> which will expand to
>life = 42
> How do I do this?
>
> Why do I want to do it? Because it would be cool to have a feature like in
> Octave where I could load an HDF5 file, and it automatically sets the
> variables from the file.
Re: [julia-users] How do I turn a string into a variable
For the usage goal, have you seen HDF5.jl?
https://github.com/timholy/HDF5.jl#quickstart
The @save and @load macros will do this for you (there are some limitations
- but Tim, Simon, et al. have pushed things about as far as they possibly
can at present).
On Wed, Dec 17, 2014 at 5:37 AM, Zeta Convex wrote:
>
> I want to be able to write:
> @makevar("life", 42)
> which will expand to
>life = 42
> How do I do this?
>
> Why do I want to do it? Because it would be cool to have a feature like in
> Octave where I could load an HDF5 file, and it automatically sets the
> variables from the file.
>
Re: [julia-users] How do I turn a string into a variable
On Wednesday, 17 December 2014 14:29:27 UTC, Isaiah wrote: > > For the usage goal, have you seen HDF5.jl? > > https://github.com/timholy/HDF5.jl#quickstart > > The @save and @load macros will do this for you > Cool beans.
