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Convert data.frame column to a vector?
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I'm going to attempt to explain this without making any mistakes, but I'm betting this will at...
USB Debugging option greyed out
I have an LG-E405 phone running Android 2.3.6.
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How can I add new array elements at the beginning of an array in Javascript?
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Bootstrap 3: pull-right for col-lg only
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You could put "element 2" in a smaller column (ie: col-2) and then use push on larger screens only:
<div class="row">
<div class="col-lg-6 col-xs-6">elements 1</div>
<div class="col-lg-6 col-xs-6">
<div cla...
How to find a hash key containing a matching value
... I want to match the client_id? E.g. How to get the key for client_id == "2180" ?
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Which SQL query is faster? Filter on Join criteria or Where clause?
Compare these 2 queries. Is it faster to put the filter on the join criteria or in the WHERE clause. I have always felt that it is faster on the join criteria because it reduces the result set at the soonest possible moment, but I don't know for sure.
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Programmatically go back to the previous fragment in the backstack
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How to remove an element from an array in Swift
....g:
var animals = ["cats", "dogs", "chimps", "moose"]
animals.remove(at: 2) //["cats", "dogs", "moose"]
A non-mutating alternative that will keep the original collection unchanged is to use filter to create a new collection without the elements you want removed, e.g:
let pets = animals.filter ...