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End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

Zlib.zlib_version

zlib_version

Returns the string which represents the version of zlib library.

See also .inflate .gzip also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.1