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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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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 ...
Specify custom Date format for colClasses argument in read.table/read.csv
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You can write your own function that accepts a string and converts it to a Date using the format you want, then use the setAs to set it as an as method. Then you can use your function as part of the colClasses.
Try:
setAs("character","myDate", function(from) as.Date(from, for...
How to check if a table contains an element in Lua?
...r function is as efficient as can be done. Of course, as noted by others (and as practiced in languages older than Lua), the solution to your real problem is to change representation. When you have tables and you want sets, you turn tables into sets by using the set element as the key and true as ...
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
I was watching this , and, as you can see, the first command I am told to put in is:
5 Answers
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