None of the string methods modify this – they always return fresh strings.
charAt(pos: number): string ES1
Returns the character at index pos, as a string (JavaScript does not have a datatype for characters). str[i] is equivalent to str.charAt(i) and more concise (caveat: may not work on old engines).
UPDATE (Fall 2020): This gist is an updated version to the Windows 10 Fall Creators Update - Installing Node.js on Windows Subsystem for Linux (WSL) guide, I usually just keep here notes, configuration or short guides for personal use, it was nice to know it also helps other ppl, I hope this one too.
Windows updated windows subsystem for linux to version 2, as the F.A.Q stated you can still use WSL version 1 side by side with version 2. I'm not sure about existing WSL machines surviving the upgrade process, but as always backup and 🤞. NOTE: WSL version 1 is not replace/deprecated, and there ar
FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.
First, add pry-rails to your Gemfile:
https://github.com/rweng/pry-rails
gem 'pry-rails', group: :developmentThen you'll want to rebuild your Docker container to install the gems
| // returns random text of a defined length | |
| // optional bool parameter justLowerCase | |
| // to just generate random lowercase text | |
| func randomText(length: Int, justLowerCase: Bool = false) -> String { | |
| var text = "" | |
| for _ in 1...length { | |
| var decValue = 0 // ascii decimal value of a character | |
| var charType = 3 // default is lowercase | |
| if justLowerCase == false { | |
| // randomize the character type |
| # | |
| # Install the MYSQL driver | |
| # gem install mysql2 | |
| # | |
| # Ensure the MySQL gem is defined in your Gemfile | |
| # gem 'mysql2' | |
| # | |
| # And be sure to use new-style password hashing: | |
| # http://dev.mysql.com/doc/refman/5.0/en/old-client.html | |
| development: |
A couple weeks ago I had a go at implementing an RPN calculator in Ruby. I knew I wanted the calculator to function by popping operands out of an array populated with the values of the input expression, operating upon the operands with the appropriate operator, and pushing the result back into the stack of operands.
I was able to implement this in version 1, but it took forever and the resulting code was not very beautiful. Why?
I started coding before I had a thorough understanding of RPN
Wait, 20 10 5 4 + * - is what now?