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In a javascript array, how do I get the last 5 elements, excluding the first element?
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+1 simple and useful. Additionally I think last value (1) must be 0 to work, This arr.slice(Math.max(arr.length - 5, 0)) worked for me.
– QMaster
Nov 1 '14 at 21:41
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Case insensitive XPath contains() possible?
I'm running over all textnodes of my DOM and check if the nodeValue contains a certain string.
6 Answers
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Changing column names of a data frame
I have a data frame called "newprice" (see below) and I want to change the column names in my program in R.
16 Answers
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Ruby on Rails: getting the max value from a DB column
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Assuming your model name is Bar and it has a column named bar, this should work:
Bar.maximum("bar")
See the excellent Rails Guides section on Calculations for more info.
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How do I show an open file in eclipse Package Explorer?
...he Package Explorer view that looks like two yellow arrows pointed at left and right. The tooltip is "Link with Editor". Click that.
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How to add months to a date in JavaScript? [duplicate]
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Split your date into year, month, and day components then use Date:
var d = new Date(year, month, day);
d.setMonth(d.getMonth() + 8);
Date will take care of fixing the year.
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Way to read first few lines for pandas dataframe
...e lines ahead of time? I have a large file that takes a long time to read, and occasionally only want to use the first, say, 20 lines to get a sample of it (and prefer not to load the full thing and take the head of it).
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Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'
...d a better solution, maybe it can help somebody
replace "watch?v=" by "v/" and it will work
var url = url.replace("watch?v=", "v/");
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Get the value of checked checkbox?
...ytes" because we must simply write document.getElementById("foo").value(); and "saving calculations" because getElementById is surely speedier than getElementsByTagName and a loop.
– Mageek
Jul 22 '12 at 11:20
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Convert.ChangeType() fails on Nullable Types
...s not seem to work for uniqueidentifier to string.
– Anders Lindén
Nov 5 '18 at 10:32
Is there any particular reason ...