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What does !! mean in ruby?
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Andrew Marshall
87.3k1818 gold badges202202 silver badges204204 bronze badges
answered Feb 7 '09 at 22:06
RichHRichH
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How to select a CRAN mirror in R
...hen to automate the selection:
R -e 'chooseCRANmirror(graphics=FALSE, ind=87);library(rbundler);bundle()'
Where 87 is the number of the mirror you would like to use. This snippet also installs the rbundle for you. You can omit that if you like.
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Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
...com/api/mycall',
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
},
type: "POST", /* or type:"GET" or type:"PUT" */
dataType: "json",
data: {
},
success: function (result) {
console.log(result);
},
error: function () {
consol...
Is there a method that calculates a factorial in Java?
..., say, if x = 90! / 85!, then you'll calculate the result just as x = 86 * 87 * 88 * 89 * 90, without a need to hold 90! in memory :)
In case (2), google for "Stirling's approximation".
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imp...
Select element by exact match of its content
...swered Oct 17 '14 at 18:31
bwest87bwest87
1,1731212 silver badges1111 bronze badges
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Is !important bad for performance?
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It shouldn't have any effect upon the performance really. Seeing firefox's CSS parser at /source/layout/style/nsCSSDataBlock.cpp#572 and I think that is the relevant routine, handling overwriting of CSS rules.
it just seems to be an simple check for "important".
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What is the difference between gmake and make?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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How can you do paging with NHibernate?
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Jon LimjapJon Limjap
87.7k1414 gold badges9494 silver badges147147 bronze badges
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How to mount a host directory in a Docker container
...ltiple key-value pairs, separated by commas. Each key/value pair takes the form of a <key>=<value> tuple. The --mount syntax is more verbose than -v or --volume, but the order of the keys is not significant, and the value of the flag is easier to understand.
The type of the mount, which ...
Find which commit is currently checked out in Git
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$ git rev-parse HEAD
273cf91b4057366a560b9ddcee8fe58d4c21e6cb
Update:
Alternatively (if you have tags):
(Good for naming a version, not very good for passing back to git.)
$ git describe
v0.1.49-localhost-ag-1-g273cf91
Or (as Mark suggested, listing here for completeness):
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