acopy | Python implementation of the Ant Colony Optimization Meta | Code Editor library
kandi X-RAY | acopy Summary
kandi X-RAY | acopy Summary
A Python implementation of the Ant Colony Optimization Meta-Heuristic
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Top functions reviewed by kandi - BETA
- Runs the solver
- Plot the problem
- Run a solver
- Return a human readable report
- Prints the current iteration
- Runs a simple demo experiment
- Summarize the objective function
- Called when a state is started
- Perform iteration
acopy Key Features
acopy Examples and Code Snippets
Community Discussions
Trending Discussions on acopy
QUESTION
Function below does make a copy of given data.
...ANSWER
Answered 2021-May-26 at 16:02The keyword return
stops the function it is placed in as soon as it is encountered, hence selection_sort
does not reach the while
loop. If you delete return acopy
it should work as expected
QUESTION
I have the following Code
...ANSWER
Answered 2020-Jul-30 at 20:01This is because of copy elision. You can read more about it on https://en.cppreference.com/w/cpp/language/copy_elision.
BTW, this leads to other surprising effects as in Why does an object returned by value have the same address as the object inside the method?.
QUESTION
I know questions like this have been asked a ton, so I am super sorry if my question is indeed identical to those. I've tried to find the solution to my problem, but none of the given solutions have resolved the error.
I am trying to change a linked list class into a template. I am getting two of the same error ("Expected unqualified-id") when overloading operators.
Below are the code snippets that are getting the error:
...ANSWER
Answered 2019-Nov-13 at 20:15That's too many templates. You only need single template
keyword for single definition:
QUESTION
I found a question similar to mine, but I was not able to figure out a solution based on their solution, so I decided to post mine here.
I wrote code for a linked list of integers, and I am now trying to convert it into a template so it can be a linked list of whatever. When I did so, I got a ton of errors that I can't figure out why they happened due to my changes (they seem related to scope, but I didn't change any scoping) or how to fix them.
The errors I am getting are:
"Definition or redeclaration of 'LinkedList' cannot name the global scope"
"Use of undeclared identifier 'root'"
"Unknown type name 'Node'"
"'LinkedList' is not a class, namespace, or enumeration"
Below is my code (I'll mark where I am getting errors):
...ANSWER
Answered 2019-Nov-13 at 04:18You need to declare each of your implementations to be templates as well. For instance:
QUESTION
I come across a weird behavior when switching from clang
to gcc
. clang
successfully compiles the code while gcc
reports an error. Here is a minimal example to reproduce the behavior. I have tried this with c++14
and c++17
with multiple clang
and gcc
versions.
Who is right here, clang or gcc?
...ANSWER
Answered 2019-Sep-13 at 08:59clang
is right. The inner closure captures aCopy
by value, and mutating that doesn't affect the outer closure. gcc
seems to get confused by the identical name for the variable in question. You can work around this by giving it another name. Example:
QUESTION
I have been getting error in my code saying that
...ANSWER
Answered 2019-Jun-05 at 23:20Internet Explorer does not support ES6+ features, including for..of
, so the polyfill as given does not work.
Reading the proposal specification:
Let targetIndex be start.
Let sourceIndex be 0.
Repeat, while sourceIndex < sourceLen
Arrays are iterated over starting from index 0, incrementing by 1 until the length is reached. So, rather than messing with iterators (IE does not understand Symbol
), use a plain for
loop instead to increment manually.
Because the given polyfill depends on Array.isArray
, make sure to polyfill it as well.
The following snippet runs as expected on IE11:
QUESTION
How to set a trigger to insert in another table from another schema ?
Brief explanation
Considering schema "S" and schemas "1" to "n". Consider that Schema "S" has table Users and table Company. The table users has a relationship 1:1 to table Company. Every User is in a company. The table Company has the column "schema" (varchar(255))
Schema "S" has the table Users and table Company defined. Every other schema should have acopy of table Users.
However the table Users is only modified on schema S.
Everytime table Users in Schema "S" is modified, I want to replicate the changes to the schema 'n' IF and only IF the column "schema" in table "Company" == 'n'.
This restriction makes this question different from the other questions!
Ah yes:
- All the schemas remains on the same database.
Example
Consider the Table Users has the following columns:
Id - int
username - Varchar(255)
dateBirth - Date
idCompany - FK int
Consider the table Company has the following columns:
- Id - int
- schema - Varchar(255)
When I make an insert on the Users table on schema "S", I want the following to happen:
...ANSWER
Answered 2019-May-13 at 22:52You will need to use dynamic SQL to build an INSERT
query to the other database:
QUESTION
I have the following code which sets special
to run a function convertSpecial
which will replace the apostrophe in array1
with a provided character. In this case, a space. Since the replacing character is a space, it will split that element into two then flatten the array. It will then check to see if any element in special
matches any element in array2
. This will return false. It will then replace the apostrophe with no character at all and recheck against array2.
The idea behind convertSpecial
and the variable special
is that it should be non-destructive to array1
, but this isn't happening as you can see:
ANSWER
Answered 2019-Apr-02 at 02:04You need to duplicate the array first:
QUESTION
There is a question like this about intersection on SO but it does not help me. I have a strict rule to follow. Original Solution
...ANSWER
Answered 2019-Mar-14 at 02:24I've made some modifications for the original function you've added, but I'm not sure if these modifications satisfy the restrictions you are talking about or not but anyway here's a version that works for all the cases you mentioned:
QUESTION
I am running into a strange issue where a component is updating a variable in the parent component that was passed to it as a prop.
The structure looks vaguely like so:
...ANSWER
Answered 2019-Feb-12 at 02:17When you modify member.name
in modifyState
, you're mutating the original object, since [...this.state.arrayOfObjects]
still contains the references to the original objects.
Here's how you can update the array without mutating the original:
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Install acopy
You can use acopy like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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