From: Jean Privat <jean@pryen.org>
Date: Tue, 20 Oct 2015 02:32:54 +0000 (-0400)
Subject: Merge: Optimize hash collection
X-Git-Tag: v0.7.9~22
X-Git-Url: http://nitlanguage.org

Merge: Optimize hash collection

Some optimization when dealing with empty hash-based collection

user time for nitc nitc.nit:

* before: 0m6.640s
* after: 0m6.344s (-4.5%)

Pull-Request: #1768
Reviewed-by: Alexis Laferrière <alexis.laf@xymus.net>
Reviewed-by: Alexandre Terrasa <alexandre@moz-code.org>
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