6 ms·

Goldman Sachs: GS Collections source code released

59 points by wr1472 14y ago

jc4p 14y ago
Am I missing something or was this not posted a long long time ago?
- Evbn 14y ago
  Looks like it appeared in Jan and was updated in August.
Evbn 14y ago
Better than Google Guava or Apache Commons in any way?
jwr 14y ago
This code badly needs a piece of documentation outlining: * how it differs from Google Guava Collections, * what are the tradeoffs and performance/memory characteristics of the collection types. I couldn't find an answer to the question "why would I use this?" — and I am actually looking for collections with certain properties (for Clojure, but it doesn't matter much in my case).
- reinhardt 14y ago
  This is old news, it was posted on HN when it was actually released and IIRC at least one comment compared it to Guava, pretty unfavorably from what I recall (too lazy to search for the link atm).
  - haberdasher 14y ago
    109 days ago: http://news.ycombinator.com/item?id=3997607 http://news.ycombinator.com/item?id=3997607
- mcfunley 14y ago
  Same as Guava, except 7% of items added to collections are deducted for management fees
  - wr1472 14y ago
    I don't think the source was released back then
- mmanfrin 14y ago
  Because it's proprietary and your CFO wants GS in their next round of financing.
dustismo 14y ago
"Provides replacements for ArrayList, HashSet, and HashMap optimized for performance and memory usage." Sounds interesting, would like to know a bit more. Looks like I have to find out for myself if I want answers
apeace 14y ago
Java has lambdas now?
- _delirium 14y ago
  Not natively; that's why this framework provides a way of simulating them. Java 8 is supposed to have native lambdas, though.
azmenthe 14y ago
Let's just take a quick look.... gs-collections / collections / src / main / java / com / gs / collections / impl / map / strategy / immutable / ImmutableHashingStrategyMapFactoryImpl.java Never mind...
olouv 14y ago
109 days later, a PR move regarding the german documentary about the bank? (cf. http://www.huffingtonpost.com/vivian-norris-de-montaigu/the-omerta-surrounding-go_b_1852253.html http://www.huffingtonpost.com/vivian-norris-de-montaigu/the-...)
- tawm 14y ago
  I've seen the documentary and thought exactly the same. Let's see if there will be any more goody-goody news pieces about GS in the next time.
tbundy 14y ago
Think how much coding the Vampire Squid can get done with all those tentacles.
mbell 14y ago
Why are did they include all the IntelliJ crap in the repo?
- yock 14y ago
  Show me one large organization that does project automation well. I'm literally not permitted to build my projects with Maven at work (this does seem to be Maven-ized), and I suspect I'm far from the only Java developer in that boat.
  - mbell 14y ago
    Thats scary, so you build the production files out of an IDE? What happens if some developer has a slightly different IDE config? Or the IDE has cached some compiled file that no longer actually compiles due to a change? Personally I build all my test/stage/production releases on single Jenkins box that does a full clean before building (actually it auto builds off a github hook).
    - yock 14y ago
      It's okay, because someone else is building the production artifacts and they're using a different tool. </sarcasm> I have a Jenkins install on a "found" server (belonged to a project that no longer exists, never gave the server back to infra) so I know my tests pass and my Ant scripts produce good artifacts. Still, it would be nice to step away from Ant and use something requiring less effort (and, could automatically resolve my dependencies, which by the way are a whole other battle).
      - mbell 14y ago
        Quit your job and find a better one.
lmg643 14y ago
Perhaps this is an attempt to get back in good graces with the hacker community after trying to destroy sergey aleynikov.
gadders 14y ago
I have no idea whether this code is any good or not (I'm a PM by trade) but in Investment Banking, GS has very much a "build rather than buy" mentality, and I get the impression that techies are treated with more respect than some places. I have heard from people that have worked there, that one of their main sources of competitive advantage is their bespoke settlements system, Sec DB. Apparently, it models every instrument as an object, and adding new derivatives and instruments is relatively straightforward. A bunch of senior managers from GS took over the tech organisation of a different bank I was involved with, and one of the first things they did was to start creating a new settlements and trading system, even down to the level of creating their own RDBMS as existing ones didn't do what they wanted. In most banks, you could get laughed out of the office if you said you needed to write a new RDBMS from scratch.

59 points by wr1472 14y ago

jc4p 14y ago

Am I missing something or was this not posted a long long time ago?

Evbn 14y ago
Looks like it appeared in Jan and was updated in August.

Evbn 14y ago

Better than Google Guava or Apache Commons in any way?

jwr 14y ago

This code badly needs a piece of documentation outlining: * how it differs from Google Guava Collections, * what are the tradeoffs and performance/memory characteristics of the collection types. I couldn't find an answer to the question "why would I use this?" — and I am actually looking for collections with certain properties (for Clojure, but it doesn't matter much in my case).

reinhardt 14y ago
This is old news, it was posted on HN when it was actually released and IIRC at least one comment compared it to Guava, pretty unfavorably from what I recall (too lazy to search for the link atm).
- haberdasher 14y ago
  109 days ago: http://news.ycombinator.com/item?id=3997607 http://news.ycombinator.com/item?id=3997607
mcfunley 14y ago
Same as Guava, except 7% of items added to collections are deducted for management fees
- wr1472 14y ago
  I don't think the source was released back then
mmanfrin 14y ago
Because it's proprietary and your CFO wants GS in their next round of financing.

dustismo 14y ago

"Provides replacements for ArrayList, HashSet, and HashMap optimized for performance and memory usage." Sounds interesting, would like to know a bit more. Looks like I have to find out for myself if I want answers

apeace 14y ago

Java has lambdas now?

_delirium 14y ago
Not natively; that's why this framework provides a way of simulating them. Java 8 is supposed to have native lambdas, though.

azmenthe 14y ago

Let's just take a quick look.... gs-collections / collections / src / main / java / com / gs / collections / impl / map / strategy / immutable / ImmutableHashingStrategyMapFactoryImpl.java Never mind...

olouv 14y ago

109 days later, a PR move regarding the german documentary about the bank? (cf. http://www.huffingtonpost.com/vivian-norris-de-montaigu/the-omerta-surrounding-go_b_1852253.html http://www.huffingtonpost.com/vivian-norris-de-montaigu/the-...)

tawm 14y ago
I've seen the documentary and thought exactly the same. Let's see if there will be any more goody-goody news pieces about GS in the next time.

tbundy 14y ago

Think how much coding the Vampire Squid can get done with all those tentacles.

mbell 14y ago

Why are did they include all the IntelliJ crap in the repo?

yock 14y ago
Show me one large organization that does project automation well. I'm literally not permitted to build my projects with Maven at work (this does seem to be Maven-ized), and I suspect I'm far from the only Java developer in that boat.
- mbell 14y ago
  Thats scary, so you build the production files out of an IDE? What happens if some developer has a slightly different IDE config? Or the IDE has cached some compiled file that no longer actually compiles due to a change? Personally I build all my test/stage/production releases on single Jenkins box that does a full clean before building (actually it auto builds off a github hook).
  - yock 14y ago
    It's okay, because someone else is building the production artifacts and they're using a different tool. </sarcasm> I have a Jenkins install on a "found" server (belonged to a project that no longer exists, never gave the server back to infra) so I know my tests pass and my Ant scripts produce good artifacts. Still, it would be nice to step away from Ant and use something requiring less effort (and, could automatically resolve my dependencies, which by the way are a whole other battle).
    - mbell 14y ago
      Quit your job and find a better one.

lmg643 14y ago

Perhaps this is an attempt to get back in good graces with the hacker community after trying to destroy sergey aleynikov.

gadders 14y ago

I have no idea whether this code is any good or not (I'm a PM by trade) but in Investment Banking, GS has very much a "build rather than buy" mentality, and I get the impression that techies are treated with more respect than some places. I have heard from people that have worked there, that one of their main sources of competitive advantage is their bespoke settlements system, Sec DB. Apparently, it models every instrument as an object, and adding new derivatives and instruments is relatively straightforward. A bunch of senior managers from GS took over the tech organisation of a different bank I was involved with, and one of the first things they did was to start creating a new settlements and trading system, even down to the level of creating their own RDBMS as existing ones didn't do what they wanted. In most banks, you could get laughed out of the office if you said you needed to write a new RDBMS from scratch.