4 ms·

> how many C++ projects do that out there? Not as many as the Java counterpart. I'm not sure this is a good argument. Projects where performance is critical

by camus2 13y ago

> how many C++ projects do that out there? Not as many as the Java counterpart. I'm not sure this is a good argument. Projects where performance is critical are coded in C/C++ , not in java ( browsers , AAA games , databases , servers , micro-controllers , oses... ). C/C++ programming is not about writing 'elegant' code with FactoryFactories , but performances. Even if it means using very basic data structures instead of classes or inlining functions everywhere.

edwinnathaniel 13y ago
I'm referring to the tools that ensure the code quality, not the performance critical aspect of it. Besides, all of the projects I've worked for has no FactoryFactories so let's cut that song right here right now.
pron 13y ago
> Projects where performance is critical are coded in C/C++ , not in java ( browsers , AAA games , databases , servers , micro-controllers , oses... ). This is not true. C++ beats Java performance in constrained environments. On servers the situation is not so clear-cut. You see some really fast Java databases. And BTW, Java is better at inlining functions than C++, but C++ handily beats Java when it comes to controlling memory layout (though that, too, is changing).
- camus2 13y ago
  > This is not true. C++ beats Java performance in constrained environments Every environment is constrained. Devs just got lazy and scaling now means buying more machines instead of performance optimisation. > You see some really fast Java database That eat up way to much memory for little. When you see popular java based os , tell me.
crypto5 13y ago
> Projects where performance is critical are coded in C/C++ , not in java (databases) HBase, Cassandra, VoltDB
- xandoid 13y ago
  I believe the core of VoltDB (the in memory storage engine) is written in C++. See here: https://github.com/VoltDB/voltdb/blob/master/src/frontend/org/voltdb/jni/package.html https://github.com/VoltDB/voltdb/blob/master/src/frontend/or... "VoltDB mainly consists of Java modules for easier development. However, the core EE and its underlying on-memory storage system is implemented in C++. Nowadays Java and C++ have almost same performance for many cases, but C++ still outperforms Java on low-level memory accesses. This is why we have EE and its storage system written in C++."

by camus2 13y ago

edwinnathaniel 13y ago

I'm referring to the tools that ensure the code quality, not the performance critical aspect of it. Besides, all of the projects I've worked for has no FactoryFactories so let's cut that song right here right now.

pron 13y ago

> Projects where performance is critical are coded in C/C++ , not in java ( browsers , AAA games , databases , servers , micro-controllers , oses... ). This is not true. C++ beats Java performance in constrained environments. On servers the situation is not so clear-cut. You see some really fast Java databases. And BTW, Java is better at inlining functions than C++, but C++ handily beats Java when it comes to controlling memory layout (though that, too, is changing).

camus2 13y ago
> This is not true. C++ beats Java performance in constrained environments Every environment is constrained. Devs just got lazy and scaling now means buying more machines instead of performance optimisation. > You see some really fast Java database That eat up way to much memory for little. When you see popular java based os , tell me.

crypto5 13y ago

> Projects where performance is critical are coded in C/C++ , not in java (databases) HBase, Cassandra, VoltDB

xandoid 13y ago
I believe the core of VoltDB (the in memory storage engine) is written in C++. See here: https://github.com/VoltDB/voltdb/blob/master/src/frontend/org/voltdb/jni/package.html https://github.com/VoltDB/voltdb/blob/master/src/frontend/or... "VoltDB mainly consists of Java modules for easier development. However, the core EE and its underlying on-memory storage system is implemented in C++. Nowadays Java and C++ have almost same performance for many cases, but C++ still outperforms Java on low-level memory accesses. This is why we have EE and its storage system written in C++."