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Append value to empty vector in R?
...ged instead, as this is a fairly common pattern.
– baxx
Oct 28 '18 at 16:50
1
at this point, it ...
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
...has a transform (other than the default identity transform) - but that is exactly what autolayout does. The way autolayout works is that in layoutSubviews the runtime comes dashing through all the constraints and setting the frames of all the views accordingly.
In other words, the constraints are n...
How can I reorder a list? [closed]
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I just could not understand the syntax until I realized is a pairwise simultaneous assignment. ´:-)
– loved.by.Jesus
Apr 27 at 9:56
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How to get the Power of some Integer in Swift language?
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If you like, you could declare an infix operator to do it.
// Put this at file level anywhere in your project
infix operator ^^ { associativity left precedence 160 }
func ^^ (radix: Int, power: Int) -> Int {
return Int(pow(Double(radix), Double(power)))
}...
C# elegant way to check if a property's property is null
In C#, say that you want to pull a value off of PropertyC in this example and ObjectA, PropertyA and PropertyB can all be null.
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Iterating over each line of ls -l output
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Set IFS to newline, like this:
IFS='
'
for x in `ls -l $1`; do echo $x; done
Put a sub-shell around it if you don't want to set IFS permanently:
(IFS='
'
for x in `ls -l $1`; do echo $x; done)
Or use while | read instead:
ls -l $1 | while read x; do echo $x; don...
Minimal web server using netcat
...500, for instance, it should show the result of a function ( date in the example below, but eventually it'll be a python or c program that yields some data).
My little netcat web server needs to be a while true loop in bash, possibly as simple as this:
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How can I add new array elements at the beginning of an array in Javascript?
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Use unshift. It's like push, except it adds elements to the beginning of the array instead of the end.
unshift/push - add an element to the beginning/end of an array
shift/pop - remove and return the first/last element of an array
A simple diagram......
CSS Selector “(A or B) and C”?
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is there a better syntax?
No. CSS' or operator (,) does not permit groupings. It's essentially the lowest-precedence logical operator in selectors, so you must use .a.c,.b.c.
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Unable to copy ~/.ssh/id_rsa.pub
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DISPLAY=:0 xclip -sel clip < ~/.ssh/id_rsa.pub didn't work for me (ubuntu 14.04), but you can use :
cat ~/.ssh/id_rsa.pub
to get your public key
share
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