Jetbrains founders turn billionaires without VC help

Post by ta988 » Sat, Dec 19, 2020, 3:54 AM UTC

EGreg wrote: post #132

ajdegol wrote: post #44

Earlier quoted context omitted.

I'm a big fan and user of PyCharm for many years, but we all know that when my fan starts going and the laptop wants to take off, we can guarantee that PyCharm is indexing ;)

That’s their one thing... Indexing is required by so much of their software, even listening for XDebug connections with PHPStorm is not available while indexing. Can’t they let us set the indexing on a lower priority and let stuff work without the index too? (Even if we can’t jump to a specific function, XDebug protocol already has the file and line indicated.) Otherwise I love their software!

Post by ta988 » Sat, Dec 19, 2020, 4:24 AM UTC

devmor wrote: post #258

drKarl wrote: post #144

Earlier quoted context omitted.

That is actually a misconception. You may have this mental classification of Java as a slow language if you looked at its performance 20 years ago. Now it's actually really fast, it goes neck to neck with C++. Sure, Rust or Go or C (or definitely assembler) might be faster in some workloads, but Java is definitely very very fast nowadays. It uses a lot of memory because of the way Garbage Collection works, but it is…

>It's definitely faster than Python, Ruby, PHP and many other kids on the block... I would seriously contest the speed of Java compared to modern PHP. The JIT puts PHP at near-C performance levels with competently written code. Which shouldn't be surprising if you realize PHP is largely a "wrapper" around C.

Post by iamcreasy » Sat, Dec 19, 2020, 4:52 AM UTC

hucker wrote: post #392

tomjen3 wrote: post #381

Earlier quoted context omitted.

Java is fast enough for most things, but try working with an array of a million objects in C++ vs Java and you will see the difference. In Java you will have to deal with an array with a million pointers to a million objects and in C++ you will deal with a sequential segment of memory that is a million times the size of your object - and mostly in your CPUs cache. That alone will be much, much faster. But you can't d…

You typically wouldn't use an array with a million objects in Java if you cared about performance though (for exactly that reason), you'd architect it some other way. Using SoA style when appropriate, for example.

Post by mook » Sat, Dec 19, 2020, 5:25 AM UTC

flohofwoe wrote: post #153

victor106 wrote: post #95

It’s rare these to read stories of software billionaires and think it’s well deserved. This is one of those rare cases. Also, IntelliJ runs on Java, for all the bashing that Java gets on HN, it’s an example of how “what technology you pick is less important than your focus on user experience”. It’s amazing that their products are so performant on Java

TBF, Jetbrains IDEs do feel sluggish at least on macOS compared to the alternatives (like Xcode or VSCode) on my mid-2014 13" MBP. I don't know if the JVM has performance problems specific to macOS which would explain why big UI applications feel so laggy, or whether other systems with more recent CPUs simply have more reserves to hide the lower UI performance though (the latter is probably more likely).

Post by Geminidog » Sat, Dec 19, 2020, 6:20 AM UTC

victor106 wrote: post #95

It’s rare these to read stories of software billionaires and think it’s well deserved. This is one of those rare cases. Also, IntelliJ runs on Java, for all the bashing that Java gets on HN, it’s an example of how “what technology you pick is less important than your focus on user experience”. It’s amazing that their products are so performant on Java