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Retrieving a List from a java.util.stream.Stream in Java 8
I was playing around with Java 8 lambdas to easily filter collections. But I did not find a concise way to retrieve the result as a new list within the same statement. Here is my most concise approach so far:
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How to execute mongo commands through shell scripts?
...ate({\"name\":\"foo\"},{$set:{\"this\":\"that\"}});"
> E QUERY SyntaxError: Unexpected token :
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Right query to get the current number of connections in a PostgreSQL DB
...nection
– neonidian
Dec 13 '19 at 8:05
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Numpy `logical_or` for more than two arguments
Numpy's logical_or function takes no more than two arrays to compare. How can I find the union of more than two arrays? (The same question could be asked with regard to Numpy's logical_and and obtaining the intersection of more than two arrays.)
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Way to get all alphabetic chars in an array in PHP?
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answered Jan 10 '09 at 23:05
PEZPEZ
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In Bash, how to add “Are you sure [Y/n]” to any command or alias?
...something_else
fi
Note: If $response is an empty string, it will give an error. To fix, simply add quotation marks: "$response". – Always use double quotes in variables containing strings (e.g.: prefer to use "$@" instead $@).
Or, Bash 4.x:
read -r -p "Are you sure? [y/N] " response
response=$...
Linux/Unix command to determine if process is running?
...nd non-zero if it isn't. The POSIX spec says that ps must exit >0 if an error has occurred but it is unclear to me what constitutes 'an error'. Therefore I'm not personally using that strategy although I'm pretty sure it will work as well on all Unix/Linux platforms.
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What is 'Pattern Matching' in functional languages?
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head :: List a -> a
-- An empty list has no first item, so we raise an error.
head Nil = error "empty list"
-- If we are given a `Cons`, we only want the first part; that's the list's head.
head (Cons h _) = h
Since List a values can be of two different kinds, we need to handle each one...
How do I remove  from the beginning of a file?
...coding (i.e., one in which EF BB BF appears where the BOM should be) is an error. To remove the BOM from a UTF-8 file, one should remove the (single) charcter U+FEFF. Yeah, pedantry!
– Jeffrey L Whitledge
Jul 15 '10 at 14:05
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