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Image Greyscale with CSS & re-color on mouse-over?
...e)
img.grayscale {
filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#...
Get type of all variables
...h a global object:
Everything you need is in the R manual on basic types: https://cran.r-project.org/doc/manuals/R-lang.html#Basic-types
Your object() needs to be penetrated with get(...) before you can see inside. Example:
a <- 10
myGlobals <- objects()
for(i in myGlobals){
typeof(i) ...
Nullable vs. int? - Is there any difference?
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Why shouldn't Java enum literals be able to have generic type parameters?
...tant
Unfortunately, the JEP is still struggling with significant issues: http://mail.openjdk.java.net/pipermail/amber-spec-experts/2017-May/000041.html
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Rails has_and_belongs_to_many migration
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How to properly overload the
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Update R using RStudio
...tion or the update.packages(function).
So, in order to install R,
go to http://www.r-project.org,
click on 'CRAN',
then choose the CRAN site that you like. I like Kansas: http://rweb.quant.ku.edu/cran/.
click on 'Download R for XXX' [where XXX is your operating system]
follow the installation p...
Format JavaScript date as yyyy-mm-dd
...(formatDate('Sun May 11,2014'));
Output:
2014-05-11
Demo on JSFiddle: http://jsfiddle.net/abdulrauf6182012/2Frm3/
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How to perform runtime type checking in Dart?
...friendly to a casual reader, so the best description right now seems to be http://www.dartlang.org/articles/optional-types/.
Here's an example:
class Foo { }
main() {
var foo = new Foo();
if (foo is Foo) {
print("it's a foo!");
}
}
...
What does (angle brackets) mean in Java?
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