wjholden

11 ms·

91.
by wjholden 3y ago
Another post here indicated that these times don't include startup costs. From my experience with Julia (and I love Julia and have used it extensively at school!), the "time to first plot" thing is still a big problem. You wo
92.
by wjholden 3y ago
Do you specifically want to learn networking for Linux? If not, the Network+ and/or CCNA certifications are a great place to start for generic network education.
93.
by wjholden 3y ago
I would love to have this in Java, hopefully this JEP makes it!
94.
by wjholden 3y ago
This story and the resulting discussion here on HN are such a great example of data mining with statistical methods. The researchers found a non-obvious result using statistics. Now we're all speculating about the underlying cause, try
95.
by wjholden 3y ago
Does it play nice with RStudio? I've had some success using Plots.jl from JuliaCall. However, I sometimes find it easier to just bring a dataframe into R and use ggplot.
96.
by wjholden 3y ago
This is a really interesting perspective. I wonder: does intense exercise achieve the same outcome? Fasting? Low-sugar diet?
97.
by wjholden 3y ago
I agree, seems like a really fundamental conflict you'd want to pre-solve before having children.
98.
by wjholden 3y ago
This is why I love this site. I've been doing networking for many years and I'm not a total novice in databases, but I had no idea MySQL had these functions.
99.
by wjholden 3y ago
This is a good idea. Tracking down which process owns a port in `netstat` can be tedious. My only suggestion to improve is to clarify in the documentation if this is only for TCP or also for UDP.
100.
by wjholden 3y ago
I could be wrong, but my perception is that Go is so opinionated that you'll either write idiomatic Go or use another language. So, from that perspective there's some goodness in using Go as a learner's systems language.
101.
by wjholden 4y ago
You're right, but you might be disappointed in how seldom network operators actually install updates. It isn't uncommon to find switches with a year of uptime still running the factory software that came preinstalled. (I'm ob
102.
by wjholden 4y ago
Well, Cisco publishes both MD5 and SHA-512 hashes for all their updates. It would be pretty impressive for a bad guy to build an evil file that has both an MD5 and also SHA-512 collision. You might need an active CCO account to view http:&
103.
by wjholden 4y ago
No. Cisco IOS/IOS-XE routers and switches will complain that you haven't licensed them correctly, but it doesn't impact functionality. Cisco shot both it's feet years ago with an unpopular "SMART Licensing" sch
104.
by wjholden 4y ago
Maybe this works like a reversed Poisson distribution? In running races, it's not uncommon for the winner to be minutes ahead of the runner-up, who is only seconds ahead of the 3rd. After they cross the finish line, several more cross
105.
by wjholden 4y ago
For HTTP/HTTPS, proxy servers (forward and reverse) offer an equivalent ability to hide addresses and a lot more features for security and performance.
106.
by wjholden 4y ago
John Carmack had some interesting comments on debuggers (as opposed to "print debugging") in his recent interview with Lex Friedman. This was probably the most valuable thing I got out of their talk, because I myself use print deb
107.
by wjholden 4y ago
The Raspberry Pi is how I got introduced to Mathematica in 2019. I actually it for Advent of Code that year, which was difficult and frustrating but a huge learning experience!
108.
by wjholden 4y ago
Tooks some digging, but [here it is]( https://www.reddit.com/r/Julia/comments/n2mje4/comment/gwmt1... ). I was talking about invoking Julia from the shell as a script. Because loading packages takes t
109.
by wjholden 4y ago
How well does this work? I've seen this library but never used it. Julia is really slow from a cold start, which limits its utility for scripting. About a year ago I was very off-put by someone on Reddit who sort of scolded me for want
110.
by wjholden 4y ago
I'm not so concerned. For one thing, a /64 issued to a house is a pretty daunting search space for the scanning worms of yesterday. Another, computers today do come with firewalls that are enabled by default and tricky to disable.
111.
by wjholden 4y ago
An interesting use case is if you want to need to apply graph algorithms to a problem where edges multiply instead of adding. Just take the log of the multiplier and now your multiplication problem is addition. For example, suppose you cann
112.
by wjholden 4y ago
I don't like this about myself, but these days when Google or Microsoft mess with the software I've been using for a few decades my first feeling is frustration and my immediate reaction is to turn off the new feature. A few days
113.
by wjholden 4y ago
Tangentially related, I've had some success Googling constants before. For example, I once got interested in the constants in the Harris-Benedict function for estimating basal metabolic rates. By searching for these constants, I quickl
114.
by wjholden 4y ago
Me too, I remember we were really into this show when I was in the 3rd grade. We moved houses in that summer, and I think I remember the hacking episodes wrapping up the very day we moved out of the old house.
115.
Show HN: Reindeer Replacements: Solving a children's logic puzzle with OR-Tools(wjholden.com)
2 points by wjholden 4y ago|0 comments
116.
by wjholden 4y ago
Your post led me to an interesting little quick experiment. So in 2020 I self-taught Python during Advent of Code. I remember remarking that official python.org results seldom made it to the top of Google searches. I was used to Java and Ju
117.
by wjholden 4y ago
There's a lot of junk writing that may or may not be authored by humans about health and fitness. Search Google for "how to do more pull-ups" and you'll find thousands of long, meandering, trash articles of generic commo
118.
by wjholden 4y ago
Not disagreeing, but let me point out that animals can move their bodies quite well and we consider most of them significantly less intelligent. I don't know what proportion of the brain is used for movement and what proportion is used
119.
by wjholden 4y ago
Same in Java. For both TCP and UDP, you build a socket and write to that. Actually, I don't know what happens if the DNS record expires during the connection. I would presume nothing -- that the socket will stay open with the same (pos
120.
by wjholden 4y ago
If the service uses a fixed IP address, then why isn't the DNS record TTL something very large?

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