Questions & Help>Questions

What is the time complexity of code points?

#strings#binary#code-points
H8rs

H8rs

What is the time complexity of code points?

Hi,

I have a pretty basic question, what is the time complexity of code points?
In other languages ive used, a lookup table is employed to provide constant time for utf-8 to binary/integer conversion, is it safe to make this assumption about Elixir?

If you dont know what I mean its the ability to “cast” characters to their UTF-8 integer representation shown below :slight_smile:

?a
# returns 97

Thank you for your help!

3 comments
#strings#binary#code-points
6 564 3

Marked As Solved

benwilson512

benwilson512

Author of Craft GraphQL APIs in Elixir with Absinthe

Hi @H8rs ? is a compile time transformation. That’s why it only works on literal values like a. This means that there is no cost at all because by the time your code is actually running the value is already 97.

5
Post #2

Also Liked

benwilson512

benwilson512

Author of Craft GraphQL APIs in Elixir with Absinthe

No problem, welcome to the forum!

1
Post #4

Where Next?

View thread on forum (has 3 responses!)
strings
binary
code-points
Home Questions & Help>Questions
#strings#binary#code-points
6 569 3
Last post

Popular in Questions Top

sen
Questions & Help>Questions

How to set environment variables in dev.exs?
Hi All, I set a environment variables in dev.exs , like below code. when i start server, how can i set the ${enable} value? thanks. d...
/phoenix
31 21927 15
New
myronmarston
Questions & Help>Questions

Typespecs - best way to spec keyword lists?
The Elixir Typespec docs show the following syntax for keyword lists in typespecs: # ... | [key: type] # keyword lists...
#dialyzer
52 14431 3
New
tduccuong
Questions & Help>Questions

Desktop GUI app with Elixir?
Hi, is there any work on GUI with Elixir, that is similar to Electron/Javascript? My idea is to bundle Phoenix and BEAM into a single se...
/phoenix#gui
34 13836 12
New
JorisKok
Questions & Help>Questions

How is it possible to get 2 million websocket connections when you have 65536 available ports?
I have a server on AWS, and was running a load test using artillery. When looking at the Phoenix dashboard I see the Ports going to 100% ...
/phoenix
20 18548 4
New
jaysoifer
Questions & Help>Questions

How to rollback a specific ecto migration?
Is there a way to rollback a specific migration and only that one (“skipping” all the other ones)? Would mix ecto.rollback -v 200809061...
/phoenix#ecto
13 16739 7
New
Emily
Questions & Help>Questions

How To Get Phoenix & VueJS working Together?
I have VueJS GUIs with the project generated using Webpack. I have Elixir modules that will need to be used by the VueJS GUIs. I forese...
/phoenix
93 22614 42
New
itssasanka
Questions & Help>Questions

Why use `utc_datetime` over `naive_datetime` for Ecto?
Hi all, Trying to get some more clarity over utc_datetime and naive_datetime for Ecto: The documentation above suggests that while ...
#timezones
115 15182 19
New
fayddelight
Questions & Help>Questions

Installing elixir via asdf shows zsh: command not found: iex
I tried installing elixir 1.11.2 erlang 23.3.4 via asdf in my zsh shell. Enabled the versions locally and globally. When I list them ...
#erlang#asdf
44 16948 17
New
PeterCarter
Questions & Help>Questions

Good auth solutions for Elixir/Phoenix?
There are pre-rolled solutions for other frameworks that do work. However, Phoenix does not seem to have these. Have people had good expe...
/phoenix#authentication
48 21542 20
New
lanycrost
Questions & Help>Questions

How To Implement if...else if...else condition
Hi everyone! I need implement if…else if…else condition from my elixir code, and anymore of this control flow structures not work proper...
#how-to-question
40 52286 6
New

Other popular topics Top

senggen
Questions & Help>Questions

How to fix *Bad argument in call to erlang:'++'(<<"xxx/crash.log">>, ".3") in lager_rotator_default:rotate_logfile/2 line 84*
Erlang/OTP 25 [erts-13.2.2] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] 15:22:35.803 [error] gen_event {lager_file_backend...
#production#error#log
2 46403 2
New
greenz1
Questions & Help>Questions

Best way to send multiple files as HTTP response
I have a phoenix application from which a user can download multiple(5-6) files of size 1MB. I couldn’t find anything related to sending ...
/phoenix#api
3 18924 3
New
JakeBecker
Chat & Discussions>Discussions

ElixirLS - the Elixir Language Server
TL;DR: I’ve just released an implementation of Microsoft’s IDE-independent Language Server Protocol for Elixir. It adds language support ...
#elixir-ls
1144 53690 245
New
jerry
Questions & Help>Questions

Ecto query using like/ilike in query
Good day to you all. I have been struggling to get a query involving like and ilike to work. Can anyone assist me on this, please? pro...
#ecto
17 16876 10
New
baxterw3b
Questions & Help>Questions

Anonymous functions with multiple body
Hi guys, i’m new in the Elixir world, and i have to say, that i love it! i’m having some problem to understand anonymous functions with ...
19 21684 4
New
Emily
Questions & Help>Questions

How To Get Phoenix & VueJS working Together?
I have VueJS GUIs with the project generated using Webpack. I have Elixir modules that will need to be used by the VueJS GUIs. I forese...
/phoenix
93 22614 42
New
sergio_101
Questions & Help>Questions

Pattern matching against a string
I am VERY much an elixir newbie. I have taken one elixir course and one phoenix course on Udemy. During that course, I saw the instructor...
#pattern-matching
28 27317 14
New
Qqwy
Blogs & Podcasts>Blog Posts

Elixir Blog Posts
Update: How to use the Blogs &amp; Podcasts section You can post links to your blog posts or podcasts either in one of the Official Blog...
hexdocs.pm
#blog-posts#wiki#stickies#official-blog-posts-thread
3271 126479 1222
New
dogweather
Chat & Discussions>Discussions

The complexity of Haskell vs. Elixir's simplicity
I wrote this comment on r/haskell, and it’s not popular there. :wink: But I think I’m on to something… Haskell reminds me of Java, and e...
#language-implementation#haskell
138 29991 35
New
jononomo
Questions & Help>Questions

Websocket connection works on localhost, but get 403 error when deployed via docker
For some reason my phoenix channels are working for me in my local dev environment, but as soon as I deploy via Docker, I get a 403 error...
/phoenix#channels
8 26815 12
New
Back to top

Questions & Help>Questions

Questions Questions ❯

Latest on Elixir Forum

Elixir Forum ❯

Sponsor Spotlight

Coders51

We build reliable cloud platforms for business-critical systems.

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

EEF

Supporting innovation across the BEAM ecosystem.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

ElixirCasts

Producing high quality Elixir screencasts since 2017.

Potions

The deployment platform built for Elixir: PaaS ease, VPS control.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Forums

Popular Tags

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

EEF

Supporting innovation across the BEAM ecosystem.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

ElixirCasts

Producing high quality Elixir screencasts since 2017.

Potions

The deployment platform built for Elixir: PaaS ease, VPS control.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement