deprecate srand(rng, filename::AbstractString, n=4) #21359
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rfourquet
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The deprecation mechanism does not work as I expect:
Help requested! |
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I am ok with deprecating this. |
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I don't think we should do this right now though, we're just about ready for a release candidate. Should wait until we branch. |
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I rebased because of conflicts, and introduced a new section for v0.7.0 in "NEWS.md", please tell me if this is not the way. |
tkelman
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base/deprecated.jl
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| @@ -1310,6 +1310,11 @@ end | |||
| # PR #16984 | |||
| @deprecate MersenneTwister() MersenneTwister(0) | |||
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| # PR #21359 | |||
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these need to be in a new 0.7 section
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I would like to merge this in 1 or 2 days, if no objection comes. |
`srand` should accept a seed as second argument; here `filename` is only an indirect seed, preventing the use a string object as a direct seed.
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We used to be able to seed RNGs with a string, but that string was interpreted as the filename containing the seed. This was deprecated in #21359, in order to allow later using a string seed directly, which this patch does.
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We used to be able to seed RNGs with a string, but that string was interpreted as the filename containing the actual seed. This was deprecated in #21359, in order to later allow using a string seed directly, which this patch does.
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We used to be able to seed RNGs with a string, but that string was interpreted as the filename containing the actual seed. This was deprecated in #21359, in order to later allow using a string seed directly, which this patch does.
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We used to be able to seed RNGs with a string, but that string was interpreted as the filename containing the actual seed. This was deprecated in #21359, in order to later allow using a string seed directly, which this patch does.
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We used to be able to seed RNGs with a string, but that string was interpreted as the filename containing the actual seed. This was deprecated in #21359, in order to later allow using a string seed directly, which this patch does. --------- Co-authored-by: Nathan Zimmerberg <39104088+nhz2@users.noreply.github.com>
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This method
is never used in practice, I guess, which probably makes its maintenance cost not worth it.
was introduced in b13d037 (cc @ViralBShah), mainly (apparently) to be able to seed from "/dev/urandom"; we now have a direct abstraction with
RandomDevice(e.g.srand(rng, rand(RandomDevice(), UInt32, 4)), whensrand(rng)is not enough).prevents the introduction of a more natural
srand(rng, seed::String).srandshould only accept a direct seed as second argument (for less confusion); herefilenameis an indirect seed, and hence requires an extra explanation in the docstring. Moreover, it would be easy to usesrandusing a file if the above method existed (e.g.srand(rng, read("/dev/urandom", UInt32, 4))but not the other way around).is not fully satisfying to use: e.g. if
nis too big for the file (a finite file, i.e. not "/dev/urandom"), an error is issued, and there is no way to tellsrandto read exactly the whole file (I agree that this argument is not strong, we could simply improve this method instead of deprecating it).If this method is nonetheless deemed to be useful enough that we want to keep its functionality, I propose to make the filename a keyword argument, allowing the introduction later of
srand(rng, seed::String).