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Hardware for my POS System 1

/r/???, 2023-06-12, 12:19:48
AWS Storage Services- S3: general- Glacier: archiving & backup- EBS: block storage (disks)- Storage Gateway: connect on-premise with storage in AWS infrastructure 1

/r/???, 2023-05-23, 12:42:25
R was created in 1993 at the University of Auckland in New Zealand by Robert Gentleman and Ross IhakaR is mostly used for data data analysis.In of January 2020, R ranked the 18th most popular programming language 1

/r/???, 2023-05-23, 08:40:26
In Linux, directories have permissions too- You can list their contents if it's *readable*- You can access a file in a directory if the directory is *executable*To change permissions, use chmod- chmod 711 file- chmod u+x file (users can execute the file) 1

/r/???, 2023-05-23, 00:40:40
The best code is the one you don't have to write. 2

/r/???, 2023-05-22, 16:40:41
If it's worth doing just once, it is worth automating! 1

/r/???, 2023-05-22, 08:41:18
2 Quick Interview tips- Think out loud while solving the problem. Explain your thought process.- If your interviewer jumps in to help you, don't freak out. It's normal. 1

/r/???, 2023-05-22, 04:42:18
"If you don't fail at least 90 percent of the time, you're not aiming high enough."- Alan Kay 1

/r/???, 2023-05-21, 20:40:26
Big O is not the only factor to consider when you think about algorithm performance. Also:- Disk usage- Memory- Cache- Network- Concurrency (and its overhead)- ... 2

/r/???, 2023-05-21, 16:40:55
There's no test like production 1

/r/???, 2023-05-21, 12:40:48
Cloud Deployment Manager is Google's Infrastructure as Code service, similar to Terraform.It automates repeatable tasks like provisioning, configuration, and deployments for any number of machines. 1

/r/???, 2023-05-21, 00:40:32
Working software is the primary measure of progressagilemanifesto .org 1

/r/???, 2023-05-20, 20:40:28
4 Common linked list interview questions1. Reverse linked list, recursive & iterative2. Merge two sorted linked list3. Does a linked list have a cycle?4. Find the intersection of two lists5. Add numbers represented by two listsTry to solve them (easily googable) 1

/r/???, 2023-05-20, 12:40:13
"The real money isn't in the software. It's in the service you build with that software."- Jeff Atwood 1

/r/???, 2023-05-20, 08:41:05
"It's harder to read code than to write it."- Joel Spolsky 2

/r/???, 2023-05-19, 20:41:38
A project's bus factor is the number of team members who would put the project in jeopardy if run over by a bus (or get sick, vacation, resign, ...)Strive to increase this number. Ex:- Write good doc- Code reviews- Pair programming to spread knowledge of the code base 1

/r/???, 2023-05-19, 04:41:01
When all you have is a hammer, everything starts to look like a nail 1

/r/???, 2023-05-18, 08:41:25
The expected constant time property of a hash table assumes that the load factor be kept below a certain bound. 1

/r/???, 2023-05-18, 00:40:47
The best architectures, requirements, and designs emerge from self-organizing teamsagilemanifesto .org 1

/r/???, 2023-05-17, 20:40:18
Radix sort is an algorithm that sorts numbers by processing individual digits. 2

/r/???, 2023-05-17, 12:42:07
Check if there's a root-to-leaf path such that the sum of all the along the path equals a given sum.bool f(Node* r, int sum) {if(!r) return false;if(!r->left && !r->right && sum == r->val) return true;return f(r->left, sum - r->val) || f(r->right, sum - r->val);} 1

/r/???, 2023-05-17, 00:40:24
The execute permission bit for a directory is often called the search bit, because if you want to open a file by name, you need to have execute permission in each directory in the pathname, e.g. /home/usernameThis is different from read permission: list content of a directory 1

/r/???, 2023-05-16, 16:42:16
Spin locks- Thread synchronization mechanism- Similar to mutex- Instead of blocking by sleeping, the process is blocked by spinning (waits doing nothing) till it can acquire the lock- Should be held only for short, since the CPU can't do anything else while it's waiting 1

/r/???, 2023-05-15, 00:40:27
Containers 101- Containers makes it easy to package and run an app in an isolated environment- Docker is the most popular container engine- Kubernetes (k8s) is used to orchestrate containers- Some public clouds provide fully-managed k8s engines, like GKE or EKS 1

/r/???, 2023-05-14, 16:41:29
4 JavaScript interview questionsWhat's the difference between var, let and const keywords?What is the difference between Implicit and Explicit Coercion?What is Object Destructuring?What does "use strict" do? 1

/r/???, 2023-05-14, 04:41:10
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For more information, see the API Reference page.

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