(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.
So below I made a list of leetcode problems that are as close to grokking problems as possible.
If you hate git submodule
, then you may want to give git subtree
a try.
When you want to use a subtree, you add the subtree to an existing repository where the subtree is a reference to another repository url and branch/tag. This add
command adds all the code and files into the main repository locally; it's not just a reference to a remote repo.
When you stage and commit files for the main repo, it will add all of the remote files in the same operation. The subtree checkout will pull all the files in one pass, so there is no need to try and connect to another repo to get the portion of subtree files, because they were already included in the main repo.
Let's say you already have a git repository with at least one commit. You can add another repository into this respository like this:
SSL 设计目标:
而翻墙的目标:
# to generate your dhparam.pem file, run in the terminal | |
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048 |
func ip2int(ip net.IP) uint32 { | |
if len(ip) == 16 { | |
return binary.BigEndian.Uint32(ip[12:16]) | |
} | |
return binary.BigEndian.Uint32(ip) | |
} | |
func int2ip(nn uint32) net.IP { | |
ip := make(net.IP, 4) | |
binary.BigEndian.PutUint32(ip, nn) |
Code | Title | Duration | Link |
---|---|---|---|
Keynote | Andy Jassy Keynote Announcement Recap | 0:01 | https://www.youtube.com/watch?v=TZCxKAM2GtQ |
Keynote | AWS re:Invent 2016 Keynote: Andy Jassy | 2:22 | https://www.youtube.com/watch?v=8RrbUyw9uSg |
Keynote | AWS re:Invent 2016 Keynote: Werner Vogels | 2:16 | https://www.youtube.com/watch?v=ZDScBNahsL4 |
Keynote | [Tuesday Night Live with Jame |