# \#upgradathon

**URL:** https://discourse.julialang.org/tag/upgradathon/223.md

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## [Sparse Array Compression and Decompression upgrade to v0.7+](https://discourse.julialang.org/t/sparse-array-compression-and-decompression-upgrade-to-v0-7/13863)

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**Author:** [@briochemc](https://discourse.julialang.org/u/briochemc)\
**Replies:** 6\
**Last updated:** [August 23, 2018, 6:13pm UTC](https://discourse.julialang.org/t/sparse-array-compression-and-decompression-upgrade-to-v0-7/13863 "2018-08-23T18:13:18Z")

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Summary: I can “compress” and “decompress” a sparse array using deprecated functions. I want to upgrade the code to v0.7+. (I want to use this compression/decompression to numerically evaluate the Jacobian of a function …

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## [Fourth Weekly Upgradathon Friday TODAY (July 20, 2018)](https://discourse.julialang.org/t/fourth-weekly-upgradathon-friday-today-july-20-2018/12540)

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**Author:** [@Keno](https://discourse.julialang.org/u/Keno)\
**Replies:** 5\
**Last updated:** [July 21, 2018, 4:31pm UTC](https://discourse.julialang.org/t/fourth-weekly-upgradathon-friday-today-july-20-2018/12540 "2018-07-21T16:31:32Z")

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It has been pointed out to me that I was derelict in my duty as self-appointed Upgradathon Czar by failing to announce last week’s Friday \[1\]. However, it so happens that this week has a Friday yet again and thus, it is …