COW | The COW Programming Language
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kandi X-RAY | COW Summary
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QUESTION
In my iOS app "Progression" there is rarely a crash (1 crash in ~1000+ Sessions) I am currently not able to fix. The message is
Progression: protocol witness for TrainingSetSessionManager.update(object:weight:reps:) in conformance TrainingSetSessionDataManager + 40
This crash points me to the following method:
...ANSWER
Answered 2021-Jun-15 at 13:26While editing my initial question to add more context as Jay proposed I think it found the issue.
What probably happens? The view where the crash is, contains a table view. Each cell will be configured before being presented. I use a flag which holds the information, if the amount of weight for this cell (it is a strength workout app) has been initially set or is a change. When prepareForReuse is being called, this flag has not been reset. And that now means scrolling through the table view triggers a DB write for each reused cell, that leads to unnecessary writes to the db. Unnecessary, because the exact same number is already saved in the db.
My speculation: Scrolling fast could maybe lead to a race condition (I have read something about that issue with realm) and that maybe causes this weird crash, because there are multiple single writes initiated in a short time.
Solution: I now reset the flag on prepareForReuse to its initial value to prevent this misbehaviour.
The crash only happens when the cell is set up and the described behaviour happens. Therefor I'm quite confident I fixed the issue finally. Let's see. -- I was not able to reproduce the issue, but it also only happens pretty rare.
QUESTION
I want a function that takes two arguments, both of which can be turned into an iterator of Foo
. The snag is that I'd like to accept things which are both IntoIterator
and also IntoIterator<&Foo>
. Importantly Foo
is Copy
so I can cheaply create an owned copy from it's reference.
The solution I currently have is:
...ANSWER
Answered 2021-Jun-15 at 12:22First of all, you don't need exactly IntoIterator
bound here. It's just enough for Iterator
.
QUESTION
already sorry for my English, I'm not an English speaker. I'm trying to write a bulls and cows game. The program generates a 4-digit number and the user needs to guess the digits. If the user guessed a number and its position, it's a bull. If the user only guessed the number, its a hit. I need to send it to our teacher in 3 files: function.h, function.c and main.c
I can't figure out how to seperate the code into 3 different files. Every time I'm trying to make a function out of an action it doesn't work like the simple code. The teacher asked us to write a function for the code generator, the validating of the guess, the bulls and the hits. I would appreciate any help. Thank you so much!
the simple code:
...ANSWER
Answered 2021-Jun-14 at 02:45Here. I improved it a bit.
function.h
:
QUESTION
I am running the following program. In this program, I have the Cow class, the Dragon class derived from the Cow class, and the IceDragon class derived from the Dragon class. The Cow class, the Dragon class, and the Ice dragon class are implemented in a class called HeiferGenerator. I am running the main function in a class called CowSay, where I am implementing the HeiferGenerator class along with the Cow class, Dragon class, and IceDragon class. However, look below at the HeifeferGenerator class. I am getting the warning "Raw use of parameterized class 'Class' " on the line:
...ANSWER
Answered 2021-Mar-31 at 16:38TL;DR: Do you HAVE to use arrays? If not, use lists
Replace this:
Constructor constructor = dragonTypes[index].getConstructor(String.class, String.class);
With this:
Constructor constructor = dragonTypes.get(index).getConstructor(String.class, String.class);
And this:
private static final Class[] dragonTypes = {Dragon.class, Dragon.class};
With this:
private static final List> dragonTypes = Arrays.asList(Dragon.class, Dragon.class);
QUESTION
I have an array of variable numbers. I have another array that I want to be the of labels for the numbers array.
...ANSWER
Answered 2021-Apr-29 at 21:56You can just form a dictionary in order to maintain the order of both the lists while sorting:
QUESTION
I have a file as like this
...ANSWER
Answered 2021-Jun-05 at 14:11Make Country
to upper-case and transform data to wide format.
QUESTION
Given a dataframe like the following one:
...ANSWER
Answered 2021-Jun-04 at 12:09For what it's good for. A tidyverse approach to achieve your desired result may look like so:
QUESTION
I have an object which contains two different object types, I am trying to map it to another object which will contain a single list.
In this simple minimal reproducible example I have created a zoo class which contains a list of animals this is the destination. The source is the MammelHouse class which contains lists of pig and cow objects.
My issue is when I try to add the pigs to the list then it over writes the already written cows. I need both objects to be added to this list.
My current solution is to map each object type alone and then add them to the main object, as my actual application has ten different types currently this is not an optimal solution. I am hoping that there is a way to solve this with automapper directly.
current mapping attempt ...ANSWER
Answered 2021-Jun-04 at 11:24Add a common interface
IMammel
to Cow
and Pig
and then use Concat
Model
QUESTION
I have a dictionary
...ANSWER
Answered 2021-Jun-03 at 08:06Here's an inefficient solution using recursion that goes into lists and dicts:
QUESTION
I have a list which includes strings and integers.
...ANSWER
Answered 2021-Jun-02 at 07:15You can use itertools.groupby
:
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