im experimenting atm... the general idea with the colors is that im exploring representing the relation of a given sample to the user-selected sample (green). in callstack mode (pictured) pink/ blue means captured above/below in callstack. in step mode color is step count ie relative time
November 10, 2025 at 3:28 AM
im experimenting atm... the general idea with the colors is that im exploring representing the relation of a given sample to the user-selected sample (green). in callstack mode (pictured) pink/ blue means captured above/below in callstack. in step mode color is step count ie relative time
Callstacks are largely used by the Elastic EDR to detect malicious activity. SAERXCIT details a technique to evade a callstack-based detection and allow shellcode to load a network module without getting detected.
Post: offsec.almond.consulting/evading-elas...
PoC: github.com/AlmondOffSec...
Post: offsec.almond.consulting/evading-elas...
PoC: github.com/AlmondOffSec...
November 6, 2025 at 1:19 PM
Callstacks are largely used by the Elastic EDR to detect malicious activity. SAERXCIT details a technique to evade a callstack-based detection and allow shellcode to load a network module without getting detected.
Post: offsec.almond.consulting/evading-elas...
PoC: github.com/AlmondOffSec...
Post: offsec.almond.consulting/evading-elas...
PoC: github.com/AlmondOffSec...
Exceptions typically take a copy of the stack trace and (if thrown) roll up the callstack to find the next try/catch.
This is useful for debugging when unexpected things happen.
However it is super costly if all you're going to do is catch it and do manual recovery.
This is useful for debugging when unexpected things happen.
However it is super costly if all you're going to do is catch it and do manual recovery.
5 Reasons to Stop Throwing Exceptions - and What To Do Instead for a more Robust, Composable, and Performant Codebase
Date: 2025-07-02 | create | errors | exceptions | programming | software | software-engineering | tech |
hamy.xyz
November 2, 2025 at 6:01 PM
Exceptions typically take a copy of the stack trace and (if thrown) roll up the callstack to find the next try/catch.
This is useful for debugging when unexpected things happen.
However it is super costly if all you're going to do is catch it and do manual recovery.
This is useful for debugging when unexpected things happen.
However it is super costly if all you're going to do is catch it and do manual recovery.
New exciting features are coming to #JupyterLab 4.5.0. Please test the release candidate before & during the JupyterCon (next week!)
Major enhancements around:
- performance and scroll stability
- notebook editing
- table of contents
- debugger
- terminal
jupyterlab.readthedocs.io/en/latest/ge...
Major enhancements around:
- performance and scroll stability
- notebook editing
- table of contents
- debugger
- terminal
jupyterlab.readthedocs.io/en/latest/ge...
October 31, 2025 at 9:32 AM
New exciting features are coming to #JupyterLab 4.5.0. Please test the release candidate before & during the JupyterCon (next week!)
Major enhancements around:
- performance and scroll stability
- notebook editing
- table of contents
- debugger
- terminal
jupyterlab.readthedocs.io/en/latest/ge...
Major enhancements around:
- performance and scroll stability
- notebook editing
- table of contents
- debugger
- terminal
jupyterlab.readthedocs.io/en/latest/ge...
Having to wrap it around each "step" is the right mental model to have. React batches things happening in the same callstack and defers other things until idle. act tells React that some action would happen in its own callstack and that you want the deferred work to complete before continuing.
October 30, 2025 at 3:09 PM
Having to wrap it around each "step" is the right mental model to have. React batches things happening in the same callstack and defers other things until idle. act tells React that some action would happen in its own callstack and that you want the deferred work to complete before continuing.
🚀 Business Central 26 just dropped a callstack upgrade — but how much faster is SessionInformation.Callstack() really?
I ran the numbers.
Full breakdown + code samples:
👉 iceonly.com/business-cen...
I ran the numbers.
Full breakdown + code samples:
👉 iceonly.com/business-cen...
IceOnlys Blog | Business Central 26: Dramatic Performance Improvement for Callstack Checks
iceonly.com
October 27, 2025 at 4:54 PM
🚀 Business Central 26 just dropped a callstack upgrade — but how much faster is SessionInformation.Callstack() really?
I ran the numbers.
Full breakdown + code samples:
👉 iceonly.com/business-cen...
I ran the numbers.
Full breakdown + code samples:
👉 iceonly.com/business-cen...
There's still a weird crash that gives me no logging or callstack i gotta hunt down tho...
October 23, 2025 at 2:12 AM
There's still a weird crash that gives me no logging or callstack i gotta hunt down tho...
i hate sccs (no, they're actually really cool but this is like the fifth time i got this panic omg)
![ERROR: PANIC (the 'impossible' happened): SCC map for declaration MkDeclarationName {moduleName = MkModuleName {package = MkPackageName "knucklebones", subModules = fromList ["Main"]}, name = "TurnResult"} is missing its own binding.
SCCs: fromList []
CallStack (from HasCallStack):
error, called at src/Relude/Debug.hs:283:11 in relude-1.2.2.2-49XUvkEaanJEVa9xYTIMnb:Relude.Debug
error, called at src/Vega/Effect/GraphPersistence/InMemory.hs:365:28 in vega-0.1.0.0-9MZYQnIf4mmoTzMmugakT:Vega.Effect.GraphPersistence.InMemory](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:j7ri4agbraq6g3dfmyccxep2/bafkreibwuw5r2ipzmzbc7nl3eejbo5gbwtobqk2icp6imuf5eaefh3vtcm@jpeg)
October 22, 2025 at 7:18 PM
i hate sccs (no, they're actually really cool but this is like the fifth time i got this panic omg)
#React deja #Meta: la empresa cede el #framework a la fundación independiente React Foundation formada por #Amazon, #Callstack, #Expo, #Meta, #Microsoft, Software #Mansion y #Vercel
♥️ y 🔄
Más detalles: www.securitylab.lat/news/564397....
♥️ y 🔄
Más detalles: www.securitylab.lat/news/564397....
October 22, 2025 at 11:02 AM
#React deja #Meta: la empresa cede el #framework a la fundación independiente React Foundation formada por #Amazon, #Callstack, #Expo, #Meta, #Microsoft, Software #Mansion y #Vercel
♥️ y 🔄
Más detalles: www.securitylab.lat/news/564397....
♥️ y 🔄
Más detalles: www.securitylab.lat/news/564397....
![[compile/types/existential-dependent.vega]: FAILED
Expected error message:
Actual error message: ERROR: PANIC (the 'impossible' happened): type variable not found in type checker: MkLocalName {parent = MkDeclarationName {moduleName = MkModuleName {package = MkPackageName "existential-dependent", subModules = fromList ["Main"]}, name = "f"}, name = "r", count = 0}
CallStack (from HasCallStack):
error, called at src/Relude/Debug.hs:283:11 in relude-1.2.2.2-49XUvkEaanJEVa9xYTIMnb:Relude.Debug
error, called at src/Vega/TypeCheck.hs:69:20 in vega-0.1.0.0-9MZYQnIf4mmoTzMmugakT:Vega.TypeCheck
typeVariableKind, called at src/Vega/TypeCheck.hs:802:28 in vega-0.1.0.0-9MZYQnIf4mmoTzMmugakT:Vega.TypeCheck](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:j7ri4agbraq6g3dfmyccxep2/bafkreihamlkfxhzea5acgzvosbdlqdjv5rj3bp7wkxaefwc6xu3iey5pau@jpeg)
The big one is Linaria for CSS. github.com/callstack/li...
October 20, 2025 at 5:13 PM
The big one is Linaria for CSS. github.com/callstack/li...
What a week for the React community! ⚛️💎
Our team was in Nevada, USA, for React Conf 2025 — the world’s leading React conference, co-organized by Callstack, Meta, and the React core team.
We’re proud to keep learning, sharing, and being part of such an inspiring community. 🚀
#Codeminer42 #React
Our team was in Nevada, USA, for React Conf 2025 — the world’s leading React conference, co-organized by Callstack, Meta, and the React core team.
We’re proud to keep learning, sharing, and being part of such an inspiring community. 🚀
#Codeminer42 #React
October 20, 2025 at 11:38 AM
What a week for the React community! ⚛️💎
Our team was in Nevada, USA, for React Conf 2025 — the world’s leading React conference, co-organized by Callstack, Meta, and the React core team.
We’re proud to keep learning, sharing, and being part of such an inspiring community. 🚀
#Codeminer42 #React
Our team was in Nevada, USA, for React Conf 2025 — the world’s leading React conference, co-organized by Callstack, Meta, and the React core team.
We’re proud to keep learning, sharing, and being part of such an inspiring community. 🚀
#Codeminer42 #React
![[27 of 36] Compiling Vega.TypeCheck [Source file changed]
<no location info>: error:
panic! (the 'impossible' happened)
GHC version 9.10.2:
lookupConstructorInfo: not a ConLike
name: GenericInstantiation
Call stack:
CallStack (from HasCallStack):
callStackDoc, called at compiler/GHC/Utils/Panic.hs:190:37 in ghc-9.10.2-d434:GHC.Utils.Panic
pprPanic, called at compiler/GHC/Rename/Env.hs:439:18 in ghc-9.10.2-d434:GHC.Rename.Env
CallStack (from HasCallStack):
panic, called at compiler/GHC/Utils/Error.hs:507:29 in ghc-9.10.2-d434:GHC.Utils.Error
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:j7ri4agbraq6g3dfmyccxep2/bafkreiegqn66bi6zed2ni2yhkrmu57hi7wn2myxkqsij3wm6oyduy4eqfy@jpeg)
Debugging GPU crashes on PC can be challenging. We'll go over best practices and the tools available in Unreal Engine to debug such crashes. This includes a new GPU breadcrumbs system, which provides the equivalent of a GPU “callstack.” Additionally, we'll examine case studies and discuss
October 14, 2025 at 4:40 AM
Debugging GPU crashes on PC can be challenging. We'll go over best practices and the tools available in Unreal Engine to debug such crashes. This includes a new GPU breadcrumbs system, which provides the equivalent of a GPU “callstack.” Additionally, we'll examine case studies and discuss
1. Why? This might be completely useless for your needs 🙈, since you can detect whether Liquid Glass is available through the expo-glass-effect package (or via callstack/liquid-glass)
bsky.app/profile/cod...
bsky.app/profile/cod...
Beto (@codewithbeto.dev)
💡 Use expo-glass-effect to check if liquid glass is available
Learn more: https://docs.expo.dev/versions/latest/sdk/glass-effect
bsky.app
October 12, 2025 at 3:04 PM
1. Why? This might be completely useless for your needs 🙈, since you can detect whether Liquid Glass is available through the expo-glass-effect package (or via callstack/liquid-glass)
bsky.app/profile/cod...
bsky.app/profile/cod...
it's tempting to see the disquiet around Vercel playing a part in this (although representatives from Amazon, Callstack, Expo, Meta, Microsoft, Software Mansion and Vercel) but honestly, ALL load bearing 'open' software should have independent foundations for governance
"Introducing the React Foundation: The New Home for React & React Native" engineering.fb.com/2025/10/07/o...
Introducing the React Foundation: The New Home for React & React Native
Meta open-sourced React over a decade ago to help developers build better user experiences. Since then, React has grown into one of the world’s most popular open source projects, powering over 50 m…
engineering.fb.com
October 8, 2025 at 2:51 PM
it's tempting to see the disquiet around Vercel playing a part in this (although representatives from Amazon, Callstack, Expo, Meta, Microsoft, Software Mansion and Vercel) but honestly, ALL load bearing 'open' software should have independent foundations for governance
„The React Foundation’s governing board will consist of representatives from Amazon, Callstack, Expo, Meta, Microsoft, Software Mansion, and Vercel, with the intention to expand further over time.“ engineering.fb.com/2025/10/07/o...
Introducing the React Foundation: The New Home for React & React Native
Meta open-sourced React over a decade ago to help developers build better user experiences. Since then, React has grown into one of the world’s most popular open source projects, powering over 50 m…
engineering.fb.com
October 8, 2025 at 7:00 AM
„The React Foundation’s governing board will consist of representatives from Amazon, Callstack, Expo, Meta, Microsoft, Software Mansion, and Vercel, with the intention to expand further over time.“ engineering.fb.com/2025/10/07/o...
You see the first picture and think its ok to have them on the list of members (second picture)??
How stupid do you have to be and bring that company into this? HOW???????? There is literally a GENOCIDE going on and THIS shit is happening.
DO THESE PEOPLE HAVE NO FUCKING IDEA?
How stupid do you have to be and bring that company into this? HOW???????? There is literally a GENOCIDE going on and THIS shit is happening.
DO THESE PEOPLE HAVE NO FUCKING IDEA?
October 7, 2025 at 8:49 PM
You see the first picture and think its ok to have them on the list of members (second picture)??
How stupid do you have to be and bring that company into this? HOW???????? There is literally a GENOCIDE going on and THIS shit is happening.
DO THESE PEOPLE HAVE NO FUCKING IDEA?
How stupid do you have to be and bring that company into this? HOW???????? There is literally a GENOCIDE going on and THIS shit is happening.
DO THESE PEOPLE HAVE NO FUCKING IDEA?
At React Conf this week? Let's talk about the future of the ecosystem.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
October 7, 2025 at 8:32 PM
At React Conf this week? Let's talk about the future of the ecosystem.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
The Callstack team is just outside the Casablanca Ballroom. Drop by to discuss where React is heading and take our React Maturity Survey to see how your app can lead the way.
Read the Callstack press release ➡️ clstk.com/478TYpz
Callstack Joins as Founding Member of the Newly Launched React Foundation
Callstack joins the new React Foundation as a founding member. Launched under the Linux Foundation, it will steward React & React Native for long-term stability and ecosystem growth.
clstk.com
October 7, 2025 at 5:38 PM
Read the Callstack press release ➡️ clstk.com/478TYpz
The future of React and React Native is now stewarded by the new React Foundation and Callstack is a founding member.This milestone ensures the long-term stability of the core infrastructure and a neutral, collaborative home for the ecosystem you rely on.
Press releases below ⬇️
Press releases below ⬇️
October 7, 2025 at 5:38 PM
The future of React and React Native is now stewarded by the new React Foundation and Callstack is a founding member.This milestone ensures the long-term stability of the core infrastructure and a neutral, collaborative home for the ecosystem you rely on.
Press releases below ⬇️
Press releases below ⬇️
We’re so excited to be co-hosting React Conf again this week!
Find us at:
- Callstack booth (main hall)
- “React Everywhere: Bringing React Into Native Apps” by @grabbou.com, Oct 8, 2:05PM
- “What’s the Framework of the React Future?” panel with @thymikee.bsky.social, Oct 8, 4:20PM
👉 conf.react.dev
Find us at:
- Callstack booth (main hall)
- “React Everywhere: Bringing React Into Native Apps” by @grabbou.com, Oct 8, 2:05PM
- “What’s the Framework of the React Future?” panel with @thymikee.bsky.social, Oct 8, 4:20PM
👉 conf.react.dev
React Conf 2025 | October 7-8 | Henderson, Nevada & online | Join us!
conf.react.dev
October 6, 2025 at 1:12 PM
We’re so excited to be co-hosting React Conf again this week!
Find us at:
- Callstack booth (main hall)
- “React Everywhere: Bringing React Into Native Apps” by @grabbou.com, Oct 8, 2:05PM
- “What’s the Framework of the React Future?” panel with @thymikee.bsky.social, Oct 8, 4:20PM
👉 conf.react.dev
Find us at:
- Callstack booth (main hall)
- “React Everywhere: Bringing React Into Native Apps” by @grabbou.com, Oct 8, 2:05PM
- “What’s the Framework of the React Future?” panel with @thymikee.bsky.social, Oct 8, 4:20PM
👉 conf.react.dev
Once again running into a #python mess.
Looks like there's a packaging system called "briefcase" which stupidly breaks out of any virtual environment and then makes the unfounded assumption that `/usr/bin/python3` is always a symlink to a Python executable named by its version number.
¯\_(ツ)_/¯
Looks like there's a packaging system called "briefcase" which stupidly breaks out of any virtual environment and then makes the unfounded assumption that `/usr/bin/python3` is always a symlink to a Python executable named by its version number.
¯\_(ツ)_/¯
September 28, 2025 at 8:41 AM
Once again running into a #python mess.
Looks like there's a packaging system called "briefcase" which stupidly breaks out of any virtual environment and then makes the unfounded assumption that `/usr/bin/python3` is always a symlink to a Python executable named by its version number.
¯\_(ツ)_/¯
Looks like there's a packaging system called "briefcase" which stupidly breaks out of any virtual environment and then makes the unfounded assumption that `/usr/bin/python3` is always a symlink to a Python executable named by its version number.
¯\_(ツ)_/¯
A React Universe Conf 2025 highlight: a panel marking 10 years of React Native with @tomocchino.com (Vercel),
Christoph Nakazawa (Nakazawa Tech), @ccheever.com (Expo) & @grabbou.com (Callstack). Milestones, key learnings, and most importantly, opportunities for the future.
▶️ youtu.be/V5rgg9w25AY
Christoph Nakazawa (Nakazawa Tech), @ccheever.com (Expo) & @grabbou.com (Callstack). Milestones, key learnings, and most importantly, opportunities for the future.
▶️ youtu.be/V5rgg9w25AY
Discussion Panel: 10 Years of React Native and Beyond | React Universe Conf 2025
YouTube video by Callstack
youtu.be
September 24, 2025 at 12:47 PM
A React Universe Conf 2025 highlight: a panel marking 10 years of React Native with @tomocchino.com (Vercel),
Christoph Nakazawa (Nakazawa Tech), @ccheever.com (Expo) & @grabbou.com (Callstack). Milestones, key learnings, and most importantly, opportunities for the future.
▶️ youtu.be/V5rgg9w25AY
Christoph Nakazawa (Nakazawa Tech), @ccheever.com (Expo) & @grabbou.com (Callstack). Milestones, key learnings, and most importantly, opportunities for the future.
▶️ youtu.be/V5rgg9w25AY
Ottrelite bridges the gap between React Native DevTools and modern observability needs, making it easier than ever to trace, profile, and monitor apps across platforms. Artur Morys-Magiera and Dominik Dolny from Callstack bring you the complete picture in one talk.
▶️ youtu.be/ebfBtiWbqwE
▶️ youtu.be/ebfBtiWbqwE
Ottrelite: Tracing Framework for React Native | Artur Morys-Magiera & Dominik Dolny at RUC 2025
YouTube video by Callstack
youtu.be
September 22, 2025 at 10:39 AM
Ottrelite bridges the gap between React Native DevTools and modern observability needs, making it easier than ever to trace, profile, and monitor apps across platforms. Artur Morys-Magiera and Dominik Dolny from Callstack bring you the complete picture in one talk.
▶️ youtu.be/ebfBtiWbqwE
▶️ youtu.be/ebfBtiWbqwE