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substitute: Avoid repeated calls to 'length'. 

* guix/scripts/substitute.scm (fetch-narinfos)[update-progress!]: Move
'length' call outside of lambda.
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Ludovic Courtès 2017-07-21 14:13:58 +02:00 committed by Ludovic Courtès
parent 3d3e93b3f9
commit 75a4d86f50
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1 changed files with 3 additions and 2 deletions
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guix/scripts/substitute.scm
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@ -601,13 +601,14 @@ if file doesn't exist, and the narinfo otherwise."
(define (fetch-narinfos url paths) (define (fetch-narinfos url paths)
"Retrieve all the narinfos for PATHS from the cache at URL and return them." "Retrieve all the narinfos for PATHS from the cache at URL and return them."
(define update-progress! (define update-progress!
(let ((done 0)) (let ((done 0)
(total (length paths)))
(lambda () (lambda ()
(display #\cr (current-error-port)) (display #\cr (current-error-port))
(force-output (current-error-port)) (force-output (current-error-port))
(format (current-error-port) (format (current-error-port)
(G_ "updating list of substitutes from '~a'... ~5,1f%") (G_ "updating list of substitutes from '~a'... ~5,1f%")
url (* 100. (/ done (length paths)))) url (* 100. (/ done total)))
(set! done (+ 1 done))))) (set! done (+ 1 done)))))
(define hash-part->path (define hash-part->path