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- Dictionaryintertwine/ˌɪntəˈtwʌɪn/
verb
- 1. twist or twine together: "a net made of cotton intertwined with other natural fibres"
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#lang racket (define (intertwine L1 L2) (flatten (map cons L1 L2))) Quick test. > (intertwine '(2 4 6) '(1 3 5)) '(2 1 4 3 6 5) NOTE works in the case of equal sized lists, per question posed. Will not handle differences in length as @GoZoner's answer will. Re-implementing functions is a good way to practice programming in the small.
I have two lists, the first of which is guaranteed to contain exactly one more item than the second.I would like to know the most Pythonic way to create a new list whose even-index values come from the first list and whose odd-index values come from the second list.
Nov 13, 2015 · Here`s my problem though: I made a function thats supposed to construct 2 lists into one, but its not working and gives me the names that i used in the function define. Here is the code: (define (match List1 List2) (cons (List1) (List2))) (match (1 2 3) (5 7 8))
Oct 1, 2020 · 3. +50. In a given procedure's definition / code, "internal definitions" are forms starting with define. "a procedure body" is all the other forms after the forms which start with define. "embedded definitions must come first in a procedure body" means all the internal define forms must go first, then all the other internal forms.
Pythonic way to combine (interleave, interlace, intertwine) two lists in an alternating fashion? (27 answers) Closed 2 years ago .
Nov 13, 2009 · On some (especially older) platforms (see the comments below) you might need to. #define _USE_MATH_DEFINES. and then include the necessary header file: #include <math.h>. and the value of pi can be accessed via: M_PI. In my math.h (2014) it is defined as: # define M_PI 3.14159265358979323846 /* pi */. but check your math.h for more.
Oct 13, 2013 · array1=[0,1,2] array2=array1 array2[0]=234234 print array1 OUTPUT: [234234, 1, 2] Why does python change 'array1'?
Oct 28, 2009 · Two special cases (1) static const is preferred within a class scope for class specific constants; (2) namespace or anonymous scope const is preferred over #define. I prefer Enums. Because it is hybrid of both. Doesn't occupy space unless you create a variable of it.
Aug 10, 2013 · Yep, they're the same -- a direct character substitution is performed before the actual compilation, so you end up compiling the same characters. The thing to beware of is coding #define MAX_LEN = 10000 or #define MAX_LEN 10000;, as those include characters you don't want to substitute. –
Jun 9, 2013 · And the datetime.MINYEAR is 1, which means the minimum year value is 1. So you can not define a datetime to be equal to Zero. With your method: time1 = datetime.now(); time1 -= time1; The object time1 is changed to be datetime.timedelta not datetime.datetime object. >>> time1 = datetime.datetime.now(); >>> time1.
