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How to combine multiple conditions to subset a data-frame using “OR”?
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my.data.frame <- subset(data , V1 > 2 | V2 < 4)
An alternative solution that mimics the behavior of this function and would be more appropriate for inclusion within a function body:
new.data <- data[ which( data$V1 > 2 | d...
What's the difference between `on` and `live` or `bind`?
...ers have to be checked, this can add up fast, if you do deep imbrication (<body><div><div><div><div><table><table><tbody><tr><td><div><div><div><ul><li><button> etc etc etc...)
So, bind, like click, like...
How to count lines in a document?
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Use wc:
wc -l <filename>
This will output the number of lines in <filename>:
$ wc -l /dir/file.txt
3272485 /dir/file.txt
Or, to omit the <filename> from the result use wc -l < <filename>:
$ wc -l < /dir/f...
How to use XPath contains() here?
...first node in the list only.
In your case the first node in the list is <li><b>Type:</b> Clip Fan</li> (converted to a string: "Type: Clip Fan") which means that this:
//ul[@class='featureList' and contains(li, 'Type')]
would actually select a node!
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When to use setAttribute vs .attribute= in JavaScript?
...ull url, but getAttribute('href') returns exactly what in that attribute (<a href="/help" ...).
– Plastic Rabbit
Feb 9 '15 at 13:06
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sho...
get string value from HashMap depending on key name
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if HashMap<String, String> newMap = new HashMap<String, String>(); how to get string element from this...? where String value = newMap.get("my_code"); gives error
– saidesh kilaru
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Branch from a previous commit using Git
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You can create the branch via a hash:
git branch branchname <sha1-of-commit>
Or by using a symbolic reference:
git branch branchname HEAD~3
To checkout the branch when creating it, use
git checkout -b branchname <sha1-of-commit or HEAD~3>
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Using .text() to retrieve only text not nested in child tags
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Simple answer:
$("#listItem").contents().filter(function(){
return this.nodeType == 3;
})[0].nodeValue = "The text you want to replace with"
share
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improve thi...
Method has the same erasure as another method in type
... generics, I decided to update my library.
class CollectionConverter {
<T> List<T> toList(Collection<T> c) {...}
}
You aren't ready to make any updates, so you leave your Overrider class alone. In order to correctly override the toList() method, the language designers decided ...
Haskell composition (.) vs F#'s pipe forward operator (|>)
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I am being a little speculative...
Culture: I think |> is an important operator in the F# "culture", and perhaps similarly with . for Haskell. F# has a function composition operator << but I think the F# community tends to use points-free style less th...