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How to get an array of unique values from an array containing duplicates in JavaScript? [duplicate]

...yUnique = function(a) { return a.reduce(function(p, c) { if (p.indexOf(c) < 0) p.push(c); return p; }, []); }; share | improve this answer | follo...
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How to select only date from a DATETIME field in MySQL?

... I think you need to be carefull with that because it will not use an index on the ColumnName – d0x Jul 1 '15 at 9:03 ...
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Converting JavaScript object with numeric keys into array

...uestion wasn't explicit, but I had assumed that the keys of the object are indexes of the array by nature of them being (0,1,2,3). Just pointing out that people should know that this method doesn't guarantee any order in the array; if the keys are indexes then you need to explicitly order them so t...
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Use email address as primary key?

...when trying to track down data problems. You almost certainly will need an index on the email address anyway, so making it the primary key eliminates one index, thus improving the performance of inserts as they now have only one index to update instead of two. In my humble opinion, it's not a slam...
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Performance differences between debug and release builds

...mized code so difficult. And giving the volatile keyword a meaning. Array index checking elimination. An important optimization when working with arrays (all .NET collection classes use an array internally). When the JIT compiler can verify that a loop never indexes an array out of bounds then it...
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How do I extract text that lies between parentheses (round brackets)?

...safdsdf (again?)"; var output = input.Split('(', ')').Where((item, index) => index % 2 != 0).ToList(); – WtFudgE Apr 25 '16 at 10:36 ...
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How to use ng-repeat for dictionaries in AngularJs?

...obj.name}} {{obj.surname}}</li> ... where items is a set of persons indexed by some key. – giowild Sep 17 '14 at 15:57 ...
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Shading a kernel density plot between two points.

...ge and I believe we had similar questions here too. You need to find the index of the quantile values to get the actual (x,y) pairs. Edit: Here you go: x1 <- min(which(dens$x >= q75)) x2 <- max(which(dens$x < q95)) with(dens, polygon(x=c(x[c(x1,x1:x2,x2)]), y= c(0, y[x1:x2], 0), ...
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What is this Javascript “require”?

..._modules directory is in the root of the project at the same level as your index.html you would write this in your index.html: <script src="node_modules/ng"></script> That whole script will now be loaded into the page - so you can access its variables and methods directly. There are ...
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How to get a DOM Element from a JQuery Selector

...d to number them? $(":checkbox").each(function(i, elem) { $(elem).data("index", i); }); $(":checkbox").click(function() { if ($(this).is(":checked") && $(this).data("index") == 0) { // do stuff } }); Some of these features also help mask differences in browsers too. Some attribu...