amoeba | simple http server wrappered base on Netty framework | Websocket library

In the following script, I declare and modify @basearray in the main program. Inside the dosomething subroutine, I access @basearray, assign it to an array local to the script, and modify the local copy. Because I have been careful to change the value only of local variables inside the subroutine, @basearray is not changed.

If I had made the mistake of assigning a value to @basearray inside the subroutine, though, it would have been changed and that value would have persisted after the call to the subroutine.

This is demonstrated in the 2nd subroutine, doagain.

Also, doagain receives the reference \@basearray as an argument rather than accessing @basearray directly. But going to that additional trouble provides no additional safety. Why do it that way at all?

Is there a way to guarantee that I cannot inadvertently change @basearray inside any subroutine? Any kind of hard safety device that I can build into my code, analogous to use strict;, some combination perhaps of my and local?

Am I correct in thinking that the answer is No, and that the only solution is to not make careless programmer errors?

When hitting the submit button on my form in form.html.erb, it is not submitting, and I get a message saying 'Please review the problems below:' but it doesn't list any problems.

Can anyone please explain to me why this is happening, and how I can fix it? It would be much appreciated.

schedule.rb

In my rails app I am priting receipt using cups with gem cupsffi

This is the job I have set:

I'm trying to implement some C++ code to find the maximum of a function using a simplex algoithm. Unfortunately, I have zero experience in C++. I'm running into this error and can't seem to find a solution from answers to similar questions.

simplex.cpp: In function ‘int main(int, char**)’:
simplex.cpp:22:25: error: no matching function for call to ‘simplex615::amoeba(arbitraryFunc&, double)’
simplex.amoeba(foo, 1e-7);

There is also warning related to the linked file "simplex615.h"

In file included from simplex.cpp:4:0:
simplex615.h:302:6: note: candidate: void simplex615::amoeba(optFunc&, double) [with F = arbitraryFunc]
void simplex615 ::amoeba(optFunc& foo, double tol) {
simplex615.h:302:6: note: no known conversion for argument 1 from ‘arbitraryFunc’ to ‘optFunc&

simplex.cpp

I am creating a select box that when I select a value in main select box Domains, it will appear other select box Types like Diatoms or Flagellates.... I am done with that part however, I am trying to change back the selected item in a select box that new appear to the main first one. I mean when I selected a Diatoms in Domains select box and it will appear then I select some item in Diatoms. Then I change other items in Domains and other select box will appear, the Diatoms will disappear. But the thing is the selected item that I select still remain like when I select it, I want to change it back to first option default, not the item. Here is my code

I already tried to put 'selectedIndex', 0. However it not work.

HTML

I have a fairly unique problem I'm trying to solve, and the math is confusing me. I'm working on a map project, and one of the needs is to generate random, "amoeba-like" clusters of points around a given latitude/longitude center.

By "amoeba-like", I mean the cluster shouldn't be overly round or uniform, but should, ideally, have "arms" that extend out from the center. At the same time, the arms should be somewhat random and not particularly spiral-like.

I've tried a number of approaches, but so far, none of the clusters I've generated are quite the shape I want. I've tried approaches similar to what's described here, and I've tried the make_blobs from sklearn. But I couldn't figure out how to extend either of those get the "arms" I'm looking for, and I'm not confident that either of those approaches really makes sense.

Any advice anyone could provide would be much appreciated!

Implemented the Places Web Service API - Place Autocomplete https://developers.google.com/places/web-service/autocomplete and works fine, but it doesn't return the Latitude and Longitude of theses places predicted!

That is the request!

Using Access driver from C#.

I'm trying to left join, with fields from right overriding left's fields, but only if right fields exist. So far I have this, which always overrides left's field because Col1 and Col2 from left are ignored:

I am investigating auto-value and its extensions, namely auto-value-parcel and auto-value-parcel-adapter within my Android application.

I have these model classes:-