앨리스래빗팀 기술블로그

보호되어 있는 글입니다.

extension OptionalInfixAddition on T? { T? operator +(T? other) { return (this??0) + (other??0) as T; } } void main() { final int? n1 = null; final int? n2 = 3; print('res: ${n1 + n2}'); } 결과 : res: 3

https://pagespeed.web.dev/ PageSpeed Insights 올바른 URL을 입력하세요. pagespeed.web.dev

Cannot create a publicly accessible DBInstance. The specified VPC does not support DNS resolution, DNS hostnames, or both. Update the VPC and then try again (Service: AmazonRDS; Status Code: 400; Error Code: InvalidVPCNetworkStateFault DNS 호스트네임 허용으로 변경 https://stackoverflow.com/questions/62875709/the-specified-vpc-does-not-support-dns-resolution-dns-hostnames-or-both-updat The specified VPC doe..

aws s3 sync s3://from s3://target --profile profile --acl public-read

https://cidr.xyz/ CIDR.xyz CIDR.xyzAn interactive IP address and CIDR range visualizer CIDR is a notation for describing blocks of IP addresses and is used heavily in various networking configurations. IP addresses contain 4 octets, each consisting of 8 bits giving values between 0 cidr.xyz

오히려 오타 발생 가능성이 높아짐 해제필요 설정 -> 키보드

https -> http 좋은 방법은 아니지만 임시로 해제 가능하다 https://velog.io/@nemo/mixed-content-error [에러 일지] Mixed Content: The page at 'https://...' was loaded over HTTPS, but requested an insecure resource ... Heroku에 배포 후에 아래와 같은 에러가 발생했다. 검색창에 검색어를 입력할 때 API로 데이터를 가져오는데, HTTP, HTTPS 관련해서 문제가 발생한 것 같았다.🚫 Mixed Content: The page at 'https://...' was lo velog.io

Proxy Tool https://youtu.be/yi7vMNdSqiM