Notes on Web and Mobile App Development

https://docs.aws.amazon.com/cli/latest/reference/opsworks/create-instance.html Change volume region for attach/mount https://serverfault.com/questions/869710/is-it-possible-to-change-the-ebs-volume-to-different-availability-zones GP2 vs IO1 (General Purpose vs I Optimized) AWS EBS SSD https://www.fittedcloud.com/blog/is-it-possible-to-use-ebs-gp2-instead-of-io1-achieve-same-performance-and-save-50/ I can not access new Instance by normal SSH. After copy guide from control panel as bellow I can login. Latter I realize that I have used wrong user ('ec2') instead of ubuntu. (old but often miss this point). From guide I see that there are public DNS, then I can use this to connect. Ping often disabled by default on EC2 instance. To access your instance: Open an SSH client. (find out how to connect using PuTTY) Locate your private key file (osx_key_one.pem). The wizard automatically detects the key you used to launch the instance. Your key must not be publicly viewabl...

Who do we look for? Competitors People who have done well at math competitions(USAMO, IMO, PUTNAM), competition programming(ACM, USACO, codejam, topcoder), science fairs(ISEF, STS), or capture the flag(DEFCON, secuinside, GITS). Those competitions don't just select for ability, they also select for quickness. We are in a very competitive space. Contributors People who have contributed value to open source projects. Show us your github. Got stars? Code is never measured in quantity, but rather quality. We value those who can do more with less code; software engineering doesn't have an external selection pressure for low part count and cost like EE and ME, but you pay massive costs down the line in debugging and upkeep. Architects People who can design good APIs and source layouts on the first try. This is crucial to working in teams and scaling. Before you do work, you should be able to explain to a contractor what you want done. ME has a great divide between de...

New sample for previous idea: "Hectooor!" calling out voice game. Many many meme and epic culture like "Houston, we've had a problem", " mày mang dạ về đây", "da sheng cau" trong vạn vạn ko ngờ tới ... Hanging chair for disabled: I don't know why this idea come out, but in my many dream that I can easy moving around without leg. Imagine you are in water then you can easily moving around with your hand. For example imagine you are in a shallow pool, you can easily moving around with your hand only if there are some hanging rope or handle for you. So we can try to make some concept wheel or wheeless chair for disabled pp. Certainly we have to study many current product (mostly china product sold in VN because it affordable...) I will draw and update more specific design detail latter. When you have to shoot, shoot don't talk.

http://dasunhegoda.com/make-soap-request-command-line-curl/596/ cat XML/curl-format.txt  time_namelookup:  %{time_namelookup}\n        time_connect:  %{time_connect}\n     time_appconnect:  %{time_appconnect}\n    time_pretransfer:  %{time_pretransfer}\n       time_redirect:  %{time_redirect}\n  time_starttransfer:  %{time_starttransfer}\n                     ----------\n          time_total:  %{time_total}\n  curl --header "Content-Type: text/xml;charset=UTF-8" --header "SOAPAction: NewXXXRequest" --data @xml1.xml -w "@curl-format.txt" http://dev.server.com/yourDataCatcher.php