What is "Hammet-style"?

Writing about the first book of Jack Vance's Lyonesse trilogy, Greg Costikyan wrote in Ares Magazine (available on the Internet Archive):

Lyonesse will not appeal to all tastes; it is emphatically not written in the telegraphic, Hammet-style prose which many readers find appealing. Like a fine wine, it must be savored, and requires a patient reader. But for those with the patience, it is an eminently rewarding experience.

What does "Hammet-style" mean? I've tried to search the internet for this term, but Google either directs me to pages about types of hammers, or (for the exact phrase) gives nothing useful. Could it be a typo? But surely nobody would describe Hamlet as telegraphic style prose!

“Hammet” is a typographical error for “Hammett”, referring to Dashiell Hammett (1894–1961), who popularized the “hard-boiled” genre of detective stories with novels including Red Harvest (1929) and The Maltese Falcon (1930). His prose style is notable for passages made up of short sentences, for example:

Miss Wonderly watched the grey flakes twitch and crawl. Her eyes were uneasy. She sat on the very edge of the chair. Her feet were flat on the floor, as if she were about to rise. Her hands in dark gloves clasped a flat dark handbag in her lap.

Dashiell Hammett (1930). The Maltese Falcon, page 5. New York: Alfred Knopf.

This style was sometimes described as “telegraphic” (alluding to the style employed by writers of telegrams, which were charged by the word):

In its ebullient materialism and telegraphic style, Red Harvest is typical of the mid-1920s.

William Marling (1998). The American Roman Noir: Hammett, Cain, and Chandler, page xiii. University of Georgia Press.