dagheti

6 ms·

1.
by dagheti 14y ago
Dear Esther was funded by the Indie Fund. One of the founders of the Indie Fund is Jonathan Blow. http://indie-fund.com/about/
2.
by dagheti 15y ago
Duplicate values that should be unique is such a common problem if you don't use constraints. This is a good example of why ACID and declarative constraints are a very good idea for data management.You can do a bad delete from query if you
3.
by dagheti 15y ago
ACID isn't a banking issue, it's an issue in any database where data integrity is important. Having written administration software for life insurance companies, you can be sure that we designed our software to rely on ACID semantics. Witho
4.
by dagheti 15y ago
Caring about branding things NoSQL isn't just not useful, it's harmful because it replaces really understanding things (like how a particular method works, and what it's good for) with a useless shorthand. Reminds me of a quote: “You can kn
5.
by dagheti 15y ago
I believe they are using SQL server, which keeps statistics on the most longest total runing, and longest per-run queries. It's a good idea to monitor this list and take a very close look at every execution plan that comes up. Many times yo
6.
by dagheti 16y ago
The name relational model is quite unfortunate, as it leads to confusion about what the model is (not much to do with 'relationships'). The key concepts are using sets to store data (making you think about your data in a way where duplicati
7.
by dagheti 16y ago
At least most of the time people stick to the Turing incomplete subset of the language.
8.
by dagheti 16y ago
One of the joys of working in F# is how the stronger type system combined with the type hover-overs allows for a sort of debugging-as-you-type that allows you to think with the help of the type system. It really helps unwind difficult probl
9.
by dagheti 16y ago
Oh I agree they are both very bad. Putting NULL in a non-NULL field is totally wrong. However I really do think that inserting an unexpected default value is worse than inserting NULL into a NON-NULL field. The NULLs will cause problems, bu
10.
by dagheti 16y ago
Inserting a default value is even worse than inserting NULL. Now you can't tell what data was wrongly inserted if you tried to clean up the mess later.
11.
by dagheti 16y ago
I find that F#'s (close to OCaml) type system helps me think through problems and lets me get correct programs faster, that somehow just seem to work correctly the first time. Usually when writing a program in F# I usually write out the typ
12.
by dagheti 16y ago
This is true only if we accept that AI trading is actually making the market more efficient. The 'wisdom' of crowds is often foolishness, and this could be even more true for a crowd of computers. It is very possible that by using AI that l
13.
by dagheti 16y ago
The pipe operator in F# |> is used in this way. When combined with currying it is especially effective: let double_then_sum a_list = a_list |> List.map ((*) 2) |> List.fold (+) 0
14.
by dagheti 16y ago
I recently was tutoring a high school student who was instructed in their data-management course to create several graphs from the same set of data, comparing rainfall in different Canadian cities. Unfortunately this data didn't make any se
15.
by dagheti 16y ago
The key question is "Why" that needs to be asked. A customer may think they want to sort, select, and aggregate the data, but fundamentally "get the data" is very rarely the real reason for doing something. That data is used to make a decis
16.
by dagheti 16y ago
So what happens when you create the follower but not followed index then realize you need it. Is there a way to create that new ColumnFamily without writing a object-by-object program that must traverse all the data? I suppose the concept o
17.
by dagheti 16y ago
In an interview between Miyamoto and Iwata the genius of this first level is discussed http://us.wii.com/iwata_asks/nsmb/vol1_page4.jsp "But if you avoid the first Goomba and then jump and hit a block above you, a mushroom will spring out
18.
by dagheti 16y ago
What is the source of this? If you look at http://en.wikipedia.org/wiki/Subprime_crisis_impact_timeline and search for subprime you'll see many cases of Freddie and Fannie buying or guaranteeing subprime activity. - In 2000 Fannie buys $6
19.
by dagheti 16y ago
If found working in a ML language like Haskell or F# puts a really tight straight-jacket on code style, and is wonderful at forcing you to adopt a new paradigm. When you go back to coding in other languages, you approach the same problems i
20.
by dagheti 16y ago
The question that this story raises is "Can we solve these hard problems of aging, thinking, and feeling if we had intelligence far greater than we do today?" Are we meant to read the narrator's idea that they can even solve the problems of
21.
by dagheti 16y ago
Your criticism of this article is off the mark (though it may apply to other articles). The entire point of this article is that he is trying to replicate the exact same problem that Digg was reporting using a different RDBMS and discussing
22.
by dagheti 17y ago
A great point, and it's important to remember that this effect also maps to public choice theory in government or excessive compensation of management in the non-profit sector (though statistically I believe it is lower than in private enti
23.
by dagheti 17y ago
It is possible that more interesting articles are posted in the afternoon due to the work habits of the people who actually create the content that is being linked, and posts linking these articles happening in a short time span. It may be
24.
by dagheti 17y ago
The fact that a system requiring ad-hoc attributes wouldn't work so "hot" in a relation isn't a problem with the relational model. This difficulty comes from the application of the relational model bringing to light that such a situation is
25.
by dagheti 17y ago
Anti-pattern one was critiquing using values in table definitions, the second was using attributes in table definitions. These are not the same thing. There isn't a similarity between values and attributes in the relational model, which is
26.
by dagheti 17y ago
I think the article is (as titled) about the end of _a_ era, not _the_ era. I don't think this article is saying the RDBMS is dead (the author works for Vertica, which I believe is a column-store RDBMS). He is saying that the era of the "ro
27.
by dagheti 17y ago
Isn't the argument for taxing height not that it better captures the effects of someones advantages, but that because it is taxing something you cannot control, you are removing the disincentives created by taxing something that society may
28.
by dagheti 17y ago
I think part of the backlash is coming from developers on web-applications that have business models that require scaling to very large loads before they make sense. This puts a premium on keeping things very cheap (no heavy commercial SQLD
29.
by dagheti 17y ago
The issue with key-value store isn't that you can't create an application, its that the tools to control data integrity and access your data in unexpected ways are missing or will be alot of work to create. A simple example is that two way
30.
by dagheti 17y ago
Isn't it important though how good CPP is at being Haskell, and how good IO is at being C? This seems to come back to that original Scala-is-not-functional article, which seems to argue that it isn't features or purity that makes a language

More ›