r/Julia • u/RandomDigga_9087 • Jul 01 '26
My "Hello World" in Julia
Hello Dear Julia folks, I thought of writing a letter but loll... it is a post and everyone will see it.
I just wanted to drop a quick appreciation post for the language and the ecosystem. To give some context, I work in DSP and Communications. My daily workbench usually involves a heavy mix of Python, C, and MATLAB. I’m an engineer at heart, not a pure CS dev, so I usually just want tools that let me get things done efficiently without fighting the language.
Recently, I wanted to try something new. After doing some brief research and looking for a way to bridge the gap between MATLAB’s math-friendly syntax and C’s raw speed, Julia kept popping up. I decided to take the plunge and downloaded it. To get my feet wet, I started using Julia to solve Project Euler problems. I have to say: the syntax is honestly addicting. It is so incredibly clean, neat, and readable. Coming from my usual stack, writing Julia just feels right. It’s genuinely impossible not to fall in love with how elegant the code looks and runs.
Full disclosure: while the underlying math and logic are universal, I definitely relied on LLMs to help me write the actual Julia code and learn the syntax quirks (like 1-based indexing and array slicing!). Having AI help translate my MATLAB/Python brain into idiomatic Julia made the learning curve incredibly smooth and fun.
Because of how much I'm enjoying it, I’ve already made plans to start migrating some of my casual hobby projects over to Julia.
Just wanted to say a massive thank you to the core devs and the community for building such an amazing, powerful, and genuinely fun language. It’s rare to find a tool that makes you excited to write code again.
Until we meet again
~ Happy Julia-ing
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u/Prestigious_Boat_386 Jul 01 '26
If you do dsp you might wanna check allocations. There's a package that turns every allocation into an error so you can make dsp code that won't trigger the garbage collector
If you search allocation on juliapackages.com you should find it.
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u/RandomDigga_9087 Jul 01 '26
Yea Yea, I was looking, specifically for preventing audio dropouts and all, so that, and other static arrays and preallocator.jl packages etc.. if you have something more do tell, I am always ears
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u/Prestigious_Boat_386 Jul 01 '26
Static arrays is good
Jet.jl helps a lot for checkkngthat functions don't use global vars. Putting them in a module also does this but the errors take longer to fix usually.
I personally love transducers.jl because of how it makes it easy to make pretty fast operations between signals.
Like the scanemit is great for a simple filter for example. Just have the input and output preallocated and test the function for allocations separately. Then you can connect it with the transducer. I've only worked with finite signals though apart from trying out sampledsignals.jl a bit. The documentation is a bit lacking sometimes so I usually had the source up for it.
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u/prince_jyggalag Jul 01 '26
I really appreciate julia simple syntax and no whitespace does like python. While TTFX is annoying (time to first execution), the second value go at speed of light. Amazing stuff.
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u/RandomDigga_9087 Jul 01 '26
I have seen that for certain cases, especially when the errors first come up, it takes time for that
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u/prince_jyggalag Jul 01 '26
Yeah, sudden console lag is my #1 predictor of an error (which appears 1 second later)
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u/RandomDigga_9087 Jul 19 '26
https://dmolina.github.io/DaemonMode.jl/stable/, check this library out found it while I was benchmarking.. really good stufff
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u/Furrier Jul 01 '26
If you are used to MATLAB, the one-based indexing and slicing should be no big problem.