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Lines of Code : 25License : Permissive (MIT License)
Copydef is_contains_unique_chars(input_str: str) -> bool:
"""
Check if all characters in the string is unique or not.
>>> is_contains_unique_chars("I_love.py")
True
>>> is_contains_unique_chars("I don't love Pytho def reverse_letters(input_str: str) -> str:
"""
Reverses letters in a given string without adjusting the position of the words
>>> reverse_letters('The cat in the hat')
'ehT tac ni eht tah'
>>> reverse_letters def reverse_words(input_str: str) -> str:
"""
Reverses words in a given string
>>> reverse_words("I love Python")
'Python love I'
>>> reverse_words("I Love Python")
'Python Love I'
"""
Community Discussions
Trending Discussions on love
QUESTION
I was making a simple to do app with mvc pattern and I saw an article which said you shouldn't pass the model values directly to the view, which made the project more complex than I thought (I am relatively new to programming and this is the first time I am trying out a design pattern).
But then later on I talked to someone who said that that is not true and you can send the model data directly to view, he didn't even use classes or some kind of grouping to separate the function he just put them in separate files.
I was wondering if there is a guideline that I couldn't find or we can do whatever we want as long as they are kind of separated. I would love an article or a guide to read up on as well.
...ANSWER
Answered 2021-Jun-16 at 01:01Since, I am not 100% sure the context in which you are trying to apply the MVC pattern, a good generic explanation of MVC can be found in GoF's 1995 book, Design Patterns: Elements of Reusable Object Oriented Software.
In the book, they state the following.
The Model is the application object, the View is its screen presentation, and the Controller defines the way the user interface reacts to user input.
A more robust explanation can be found from Martin Fowler where he also makes the case for a variation of Model View Controller that uses a Presentation Model.
If you are referring to Spring MVC then there is some magic that blurs the lines a bit. But in general, you have a controller that represents some screen or an encapsulated piece of functionality that the user (web requests) interact with. The controller serves up responses that are derived from the domain, usually via a Spring Service (i.e. @Service). The domain (Model) doesn't know anything about the View and the View may or may not know anything about the domain.
Given that, the View should be derived from the Model. But that's not always the case since sometimes how we present things to a screen is not the best logical way to model things in our domain - not to mention, the domain should be presentation agnostic. This leads into Fowler's argument for a Presentation Model, which is a model that belongs to the Presentation.
I call this a Presentation Model because it's a model that is really designed for and thus part of the presentation layer.
Microsoft took that idea and ran with it in a variant of MVC called MVVM (Model View ViewModel).
You can read more about that in Microsoft's documentation on ASP.Net Core.
So, back to your original question of "Should you pass the model directly to the view?" If you are using MVC then the controller is what provides the interaction. But if you're really asking, "Can you bind your view directly to the model?" If your model has all the stuff you need organized how your view needs it, then sure. And if it's simple enough, maybe that's the way to go. Otherwise, you could go with something like a Presentation Model or MVVM.
QUESTION
Hey guys given the example below in C when operating on a 64bit system as i understand, a pointer is 8 byte. Wouldn't the calloc here allocate too little memory as it takes the sizeof(int) which is 4 bytes? Thing is, this still works. Does it overwrite the memory? Would love some clarity on this.
Bonus question: if i remove the type casting (int*) i sometimes get a warning "invalid conversion from 'void*' to 'int*', does this mean it still works considering the warning?
...ANSWER
Answered 2021-Jun-15 at 21:19calloc is allocating the amount of memory you asked for on the heap. The pointer is allocated by your compiler either in registers or on the stack. In this case, calloc is actually allocating enough memory for 4 ints on the heap (which on most systems is going to be 16 bytes, but for the arduino uno it would be 8 because the sizeof(int) is 2), then storing the pointer to that allocated memory in your register/stack location.
For the bonus question: Arduino uses C++ instead of C, and that means that it uses C++'s stronger type system. void * and int * are different types, so it's complaining. You should cast the return value of malloc when using C++.
QUESTION
I have an array of objects each with a groupName key/value and then an item key with an array of objects as it's value.
I'm trying to use .reduce() with a forEach to iterate over the main array and merge all of the item values into a new Object with a single groupName and an items array containing all the original item values.
Every time I run the function I only get back the first value and I'm trying to figure out what I'm doing wrong.
Current Function:
...ANSWER
Answered 2021-Jun-15 at 15:16You can use array#map and array#concat to merge items in movie array.
QUESTION
I have been moderating a telegram group for some time and I have had no issues using the python-telegram-bot package. I actually love it. However, I can't seem to get a functioning "Welcome Message" for when new users join.
Right now, I have tried structuring the function like I do with my command and message handlers:
...ANSWER
Answered 2021-Jun-15 at 07:15As thethiny already pointed out, chatmember updates have so associated message: update.message will be None, while update.chat_member will be an instance of ChatMemberUpdated. Note that Message.reply_text is just a shortcut for Bot.send_message(chat_id=message.chat.id, ...), so as long as you have the chat_id you can just use e.g. context.bot.send_message - and you can get that chat_id from ChatMemberUpdated.chat. In fact, you can still use PTBs shortcuts, e.g. update.effective_chat.send_message.
Please check out the docs of
ChatMemberUpdated(official and PTB)Update.effective_chatChat.send_message
as well as the chatmemberbot.py example provided by PTB.
Disclaimer: I'm currently the maintainer of python-telegram-bot
QUESTION
How to remove VIM (completely) and change my mac command line editor to sublime?
I've spent the last three hours reading the same links on "how to remove VIM" only to get "how to remove MacVIM and reinstall it fresh" Or "How to remove Vim so I can reinstall it on Ubuntu"
My old laptop was fortunate to have a friend remove it but my new machine still has it installed.
I wish VIM would die in "words redacted to excessive profanity" dumpster fire while a hobo "words redacted to excessive profanity" to put out the fire
I've lost way too many hours trying to learn that outdated neckbeard elvish piece of UX trash so I want it gone. No, I'm not touching emacs.
Please tell me there is a way I can switch to sublime or am I permanently cursed to have this confusing black screen of death pop up when I try to git push or git tag stuff?
My original goal was to tag a git and push it but vim comes up and I can't figure out how to speak elvish.
I've been using PyCharm for a few years and love the interface but I need to dig deeper and a TDD Django book for class uses the terminal, it wants me to git -a "comments" so I need your advice.
So now I can't learn TDD Django because vim, MacVim and eMacs users flood the internet but I can't remove it nor figure out how to work it.
I've tried brew uninstall macvim which doesn't work because I have vim not macvim
I also tried sudo uninstall vim no luck as this is zsh mac not ubuntu
I tried brew uninstall vim to get No available formula or cask with the name "vim"
I've searched SO five times and keep getting the same links.
Alternates I've tried
brew uninstall ruby vim
per this post https://superuser.com/questions/1096438/brew-upgrade-broke-vim-on-os-x-dyld-library-not-loaded I tried, no luck.
...ANSWER
Answered 2021-Jun-14 at 21:41You don't have to remove Vim from your machine. Instead, tell your system and your tools to use Sublime Text as default editor. After you have followed that tutorial, which I must point out is part of Sublime Text's documentation, you should have a system-wide subl command that you can use instead of vim. For that, you need to add those lines to your shell configuration file:
QUESTION
I have the following problem and I am wondering if there is a faster and cleaner implementation of the removeLastChar() function. Specifically, if one can already remove the last vowel without having to find the corresponding index first.
PROBLEM
Write a function that removes the last vowel in each word in a sentence.
Examples:
removeLastVowel("Those who dare to fail miserably can achieve greatly.")
"Thos wh dar t fal miserbly cn achiev gretly."
removeLastVowel("Love is a serious mental disease.")
"Lov s serios mentl diseas"
removeLastVowel("Get busy living or get busy dying.")
"Gt bsy livng r gt bsy dyng"
Notes: Vowels are: a, e, i, o, u (both upper and lowercase).
MY SOLUTION
A PSEUDOCODE
- Decompose the sentence
- For each word find the index of the last vowel
- Then remove it and make the new "word"
- Concatenate all the words
CODE
...ANSWER
Answered 2021-Jun-14 at 22:49This can be more easily achieved with a regex substitution that removes a vowel that's followed by zero or more consonants up to a word boundary:
QUESTION
I am trying to dynamically add items to the list in Flutter so this list runs indefinitely. (I am trying to achieve this using a ListView.builder and the Future class).
The end-effect I am seeking is an endless auto-scrolling of randomly generated images along the screen at a smooth rate (kind of like a news ticker).
Is this possible? I have been reworking for ages (trying AnimatedList etc) but cant seem to make it work!
Would love any help to solve this problem or ideas.
...ANSWER
Answered 2021-Jun-14 at 21:06In the following example code, which you can also run in DartPad, a new item is added to the list every two seconds. The ScrollController is then used to scroll to the end of the list within one second.
The timer is only used to continuously add random items to the list, you could, of course, listen to a stream (or similar) instead.
QUESTION
I have recently decided to try out Laravel Sail instead of my usual setup with Vagrant/Homestead. Everything seems to be beautifully and easily laid out but I cannot seem to find a workaround for changing domain names in the local environment.
I tried serving the application on say port 89 with the APP_PORT=89 sail up command which works fine using localhost:89 however it seems cumbersome to try and remember what port was which project before starting it up.
I am looking for a way to change the default port so that I don't have to specify what port to serve every time I want to sail up. Then I can use an alias like laravel.test for localhost:89 so I don't have to remember ports anymore I can just type the project names.
I tried changing the etc/hosts file but found out it doesn't actually help with different ports
I essentially am trying to access my project by simply typing 'laravel.test' on the browser for example.
Also open for any other suggestions to achieve this. Thanks
**Update ** After all this search I actually decided to change my workflow to only have one app running at a time so now I am just using localhost and my CPU and RAM loves it, so if you are here moving from homestead to docker, ask yourself do you really need to run all these apps at the same time. If answer is yes research on, if not just use localhost, there is nothing wrong with it
...ANSWER
Answered 2021-Feb-12 at 20:06To change the local name in Sail from the default 'laravel.test' and the port, add the following to your .env file:
APP_SERVICE="yourProject.local"
APP_PORT=89
This will take effect when you build (or rebuild using sail build --no-cache) your Sail container.
And to be able to type in 'yourProject.local' in your web browser and have it load your web page, ensure you have your hosts file updated by adding
127.0.0.1 yourProject.local
to your hosts file. This file is located:
- Windows 10 – “C:\Windows\System32\drivers\etc\hosts”
- Linux – “/etc/hosts”
- Mac OS X – “/private/etc/hosts”
You'll need to close all browser instances and reopen after making chnages to the hosts file. With this, try entering the alias both with and without the port number to see which works. Since you already set the port via .env you may not need to include it in your alias.
If this doesn't work, change the .env APP_URL=http://yourProject.local:89
Ok another option, in /routes/web.php I assume you have a route set up that may either return a view or call a controller method. You could test to see if you can have this ‘return redirect('http://yourProject.local:89');’ This may involve a little playing around with the routes/controller, but this may be worth looking into.
QUESTION
I'm learning typescript lately, and I have to convert a fake react component to typescript, using the good practice.
For the moment I have something like that
...ANSWER
Answered 2021-Jun-14 at 10:21You can use types and/or interfaces:
QUESTION
It excites me to see rxjs observables in action and it confuses every single time, but each time I fell more in love with them.
Well, I have three observables -
- an observable that refreshed based on timer
this.autoRefreshView$ - a default observable that fetches based on today date
this.intraDayView - an observable that fetches based on yesterday's date (let's say)
this.priorDayView$
There is a BehaviourSubject<> that emits if default observable view is to be fetched (based on current date) or yesterday's view based on a view property - today or yesterday.
I want to execute this.autoRefreshView$ only when emitted value is today. But, below it's executed if value is yesterday as well. Is my merge here incorrect? Following is what I tried -
ANSWER
Answered 2021-Jun-11 at 12:33The reason autoRefresh$ continues to be executed, is because you are using mergeMap, which will create an additional "inner observable" every time it receives an emission. It does not stop listening to the previous source, which continues to propagate emissions from autoRefresh$.
You can instead use switchMap which maintains only a single inner source; so it stops listening to old sources when it receives a new emission:
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