How do you compare 2 lists and return the difference? (difference function in python does not return what I need)


I am trying to find the difference between 2 lists. Basically, I
want to know everything that is in list 1 that is not in list 2. The
best way to explain it, is with an example:


List1 = [a,
a, b, c, d, e]
List2 = [a, b, c, d]
In this example, I would
like a function that would return [a, e]

When I
use the difference function in python, it will only return "e" and not
that there is an additional "a" that is in list 1. When I simply used
XOR between the 2 lists, it also only returned "e." Thanks!

Say you have 2 identical functions that do not return a
value


function a() {
// do some interesting
things
}
function b() {
// do the same interesting
things
return;
}

Function
b is obviously more verbose but is there any functional
difference between these?

Web Design

What's the fastest / best way to compare two arrays and return the
difference? Much like array_diff in PHP. Is there an easy
function or am I going to have to create one via each()? or a foreach
loop?

Web Design

For two lists a and b, how can I get the indices of values that
appear in both? For example,


a = [1, 2, 3, 4, 5]
b
= [9, 7, 6, 5, 1, 0]
return_indices_of_a(a, b)
/>

would return [0,4], with (a[0],a[4]) =
(1,5)
.

Programming Languages

I want to take two lists and find the values that appear in
both.


a = [1, 2, 3, 4, 5]
b = [9, 8, 7, 6, 5] />returnMatches(a, b)

would return
[5], for instance.

Programming Languages

I am trying to find the difference between 2 lists. Basically, I
want to know everything that is in list 1 that is not in list 2. The
best way to explain it, is with an example:


List1 = [a,
a, b, c, d, e]
List2 = [a, b, c, d]
In this example, I would
like a function that would return [a, e]

When I
use the difference function in python, it will only return "e" and not
that there is an additional "a" that is in list 1. When I simply used
XOR between the 2 lists, it also only returned "e." Thanks!

Programming Languages

Hello,
I'm testing version 8.4 for possible upgrade
from 8.2.6. When testing our software, I noticed that there is
difference between casting.
Our function returns '3' or '1' as
text and it is working at 8.2.6, but not at 8.4.
style="margin:20px; margin-top:5px">
style="margin-bottom:2px">Code:

select * from table />where id <= level_break(11268,1232,11)

and
function itself
/>
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