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| author | Stephen Blott | 2016-03-18 06:12:55 +0000 |
|---|---|---|
| committer | Stephen Blott | 2016-03-18 06:12:58 +0000 |
| commit | 5f1acf3c66d9e128883a7a54409a08a42ab9ea05 (patch) | |
| tree | b4d0950c468ccadd2a055c5e8327eb67010a592c /lib | |
| parent | 307ecffc4b5d1ebfc4e48c09e0f333296d509947 (diff) | |
| download | vimium-5f1acf3c66d9e128883a7a54409a08a42ab9ea05.tar.bz2 | |
Add Utils.makeIdempotent.
The intention is to use this to clean up some of the initialisation
sequences in the front end.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/utils.coffee | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/utils.coffee b/lib/utils.coffee index 9969811a..31f4bec6 100644 --- a/lib/utils.coffee +++ b/lib/utils.coffee @@ -236,6 +236,10 @@ Utils = # Like Nodejs's nextTick. nextTick: (func) -> @setTimeout 0, func + # Make an idempotent function. + makeIdempotent: (func) -> + (args...) -> ([previousFunc, func] = [func, null])[0]? args... + # Utility for parsing and using the custom search-engine configuration. We re-use the previous parse if the # search-engine configuration is unchanged. SearchEngines = |