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How can I get the concatenation of two lists in Python without modifying either one? [duplicate]
...;>> sum([(1,2), (1,), ()], ())
(1, 2, 1)
>>> sum([Counter('123'), Counter('234'), Counter('345')], Counter())
Counter({'1':1, '2':2, '3':3, '4':2, '5':1})
>>> sum([True, True, False], False)
2
With the notable exception of strings:
>>> sum(['123', '345', '567'],...
Please explain some of Paul Graham's points on Lisp
...)
;; this is the interesting bit:
(println (str/replace-re #"\d+" "FOO" "a123b4c56"))
This snippet of Clojure code prints out aFOObFOOcFOO. Note that Clojure arguably does not fully satisfy the fourth point on your list, since read-time is not really open to user code; I will discuss what it would...
Using cURL with a username and password?
...syntax
curl http://username:password@api.somesite.com/test/blah?something=123
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Good examples of Not a Functor/Functor/Applicative/Monad?
...fied. For example, fmap id ≠ id, because let (Q(f,_)) = fmap id (Q(read,"123")) in f "456" is 123, but let (Q(f,_)) = id (Q(read,"123")) in f "456" is 456.
In fact, F is only a profunctor, - it is neither a functor nor a contrafunctor.
A lawful functor that is not applicative because the type s...
How to include an '&' character in a bash curl statement
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curl "http://www.example.com?m=method&args=1"
Are you using the & as a delimiter for a GET URL? Or is in a piece of data?
If it is in data you must encode it to an HTML character, if not, surround with quotes.
The encoding for...
Check if element exists in jQuery [duplicate]
...swered Feb 13 '14 at 4:38
Gaurav123Gaurav123
4,18566 gold badges4040 silver badges7070 bronze badges
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Is there a better way to run a command N times in bash?
...nd ::: {1..1000}
Watch the intro video for a quick introduction:
https://www.youtube.com/playlist?list=PL284C9FF2488BC6D1
Walk through the tutorial (http://www.gnu.org/software/parallel/parallel_tutorial.html). You command line
with love you for it.
...
Find duplicate lines in a file and count how many time each line was duplicated?
...iq -c | grep -v '^ *1 '
For the given example, the result would be:
3 123
2 234
If you want to print counts for all lines including those that appear only once:
sort FILE | uniq -c
or, with GNU long options (on Linux):
sort FILE | uniq --count
For the given input, the output is:
...
How do you remove all the options of a select box and then add one option and select it with jQuery?
.../attr/text like: .append($("<option></option>").attr("value", '123').text('ABC!')
– Brock Hensley
Jun 27 '13 at 21:58
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Get Character value from KeyCode in JavaScript… then trim
...le the character A has a charcode of 41 (according to, for example, http://www.utf8-chartable.de/). However, those are hex values, converting to decimal gives us a charcode of 65 for "A" and 97 for "a".[1] This is consistent with what we get from String.fromCharCode for these values.
My own requi...