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Last logged in 3/17/2026

Activity

Attempted questions, problems, quizzes, and roadmap resources in 2026

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Rank
Staff
Tier 5 of 11
Total XP
52,173
Senior rank badgeSenior
Principal rank badgePrincipal
47,827 XP to Principal20%
Questions
276
Solved
Problems
0
Solved
Quizzes
0
Completed
Streak
0
Days
Best Streak
5
Days

Recently Completed

TitleStatusDate
CConstipated constexpr
EasyLanguageKnowledge
2/18/2026
Cstructs of structs of structs 3
MediumLanguageKnowledge
2/18/2026
COver here, then over there.
HardLanguageKnowledge
2/18/2026
Cprint function?
HardLanguageKnowledge
2/18/2026
CI'm empty inside 2
CookedLanguageKnowledge
2/17/2026
CClass inStruction
EasyLanguageKnowledge
2/17/2026
CI'm leaking bytes!
MediumLanguageKnowledge
2/17/2026
CThey're stacked.
EasyOperatingSystems
11/17/2025
CShifting off the edge
CookedComputerArchitecture
11/12/2025
Cskibidi pointer
EasyLanguageKnowledge
11/11/2025
No progress.
EasyConcurrency
10/29/2025
How does it mutex?
MediumConcurrency
10/29/2025
Wake up!
EasyConcurrency
10/29/2025
Same line, different time.
CookedConcurrency
10/29/2025
What am I guarding?
CookedConcurrency
10/29/2025
When are we racing, and what is the condition?
EasyConcurrency
10/29/2025
CWhat's suspect?
EasyConcurrency
10/29/2025
Sharing data the nice way.
CookedConcurrency
10/29/2025
CBypass the mutex, or not?
EasyConcurrency
10/29/2025
Locking Granularity Tradeoffs
EasyConcurrency
10/29/2025
A thread-safe stack.
EasyConcurrency
10/29/2025
Lock Free vs Wait Free
EasyConcurrency
10/29/2025
Lock-free Memory Management
EasyConcurrency
10/29/2025
Amdahl's Law Application
CookedConcurrency
10/29/2025
Cache Coherence Optimization
CookedConcurrency
10/29/2025
Cross-thread Exception Handling
EasyConcurrency
10/29/2025
CMemory order I
EasyConcurrency
10/29/2025
CI really want to be with you.
MediumConcurrency
10/29/2025
PythonFuture Shenanigans
MediumConcurrency
10/29/2025
CInitialize Object
HardDesignPatterns
10/29/2025
CMaze creator
CookedDesignPatterns
10/29/2025
CArmy additions
EasyDesignPatterns
10/29/2025
CCharacter classes
MediumDesignPatterns
10/29/2025
CUnit grouping
EasyDesignPatterns
10/29/2025
CSprites
EasyDesignPatterns
10/29/2025
CSpellcasting
EasyDesignPatterns
10/29/2025
COverthrow the hierarchy!
EasyDesignPatterns
10/29/2025
Virtual Address Mask
EasyOperatingSystems
10/29/2025
You Dirty Bit.
CookedOperatingSystems
10/29/2025
Interacting with the OS
CookedOperatingSystems
10/29/2025
Pay your fair share.
CookedOperatingSystems
10/29/2025
Linux, what are you using?
CookedOperatingSystems
10/29/2025
How are jobs stored?
CookedOperatingSystems
10/29/2025
Stack Direction
CookedOperatingSystems
10/29/2025
Fragmentation 1
EasyOperatingSystems
10/29/2025
Split segments
CookedOperatingSystems
10/29/2025
Translate which address?
CookedOperatingSystems
10/29/2025
Memory Segmentation
CookedOperatingSystems
10/29/2025
Thinking of memory strategically
CookedOperatingSystems
10/29/2025
The fundemental page
CookedOperatingSystems
10/29/2025
TLB Purpose
CookedOperatingSystems
10/29/2025
Multi-level Page Tables
EasyOperatingSystems
10/29/2025
Page Table Present Bit
CookedOperatingSystems
10/29/2025
Swap Space Function
CookedOperatingSystems
10/29/2025
The Page Replacement Algorithm
CookedOperatingSystems
10/29/2025
Shake it, shake, shake it.
CookedOperatingSystems
10/29/2025
Thread Motivation Basics
MediumOperatingSystems
10/29/2025
Uncontrolled scheduling
CookedOperatingSystems
10/29/2025
Join me
CookedOperatingSystems
10/29/2025
Lock Purpose Basics
EasyOperatingSystems
10/29/2025
Spin Lock Inefficiency
HardOperatingSystems
10/29/2025
Counter Thread Safety
CookedOperatingSystems
10/29/2025
Lock Coupling
EasyOperatingSystems
10/29/2025
Condition Variable Atomicity
CookedOperatingSystems
10/29/2025
Signal vs Broadcast
CookedOperatingSystems
10/29/2025
Fast Random
EasyOperatingSystems
10/29/2025
Lock It
MediumOperatingSystems
10/29/2025
PML4
EasyOperatingSystems
10/29/2025
Space the cache
EasyComputerArchitecture
10/29/2025
Map the cache, again
MediumComputerArchitecture
10/29/2025
What the fork?
CookedOperatingSystems
10/29/2025
Simple system call overhead
MediumOperatingSystems
10/29/2025
PythonThe whole shebang
MediumOperatingSystems
10/29/2025
isolcpu, taskset, pthread_setaffinity.
CookedOperatingSystems
10/29/2025
Where can I find you?
EasyOperatingSystems
10/29/2025
CCan you treat me as an equal?
EasyOperatingSystems
10/29/2025
Help! My Users Keep Changing!
EasyLanguageKnowledge
10/29/2025
EEEEEEEEEEI
MediumComputerArchitecture
10/29/2025
System Dichotomy
CookedLanguageKnowledge
10/29/2025
3 Cache Misses
CookedComputerArchitecture
10/29/2025
Sharing is caring.
CookedComputerArchitecture
10/29/2025
L1 Cache Split
CookedComputerArchitecture
10/29/2025
NUMA NUMA NUMA
CookedComputerArchitecture
10/29/2025
TLB Switch
EasyComputerArchitecture
10/29/2025
Common ISAs
CookedComputerArchitecture
10/29/2025
ISA Components
EasyComputerArchitecture
10/29/2025
ISA Instructions
EasyComputerArchitecture
10/29/2025
How much parallelism?
EasyComputerArchitecture
10/29/2025
How big are the lines?
CookedComputerArchitecture
10/29/2025
Tag, you're it.
EasyComputerArchitecture
10/29/2025
It's massive.
EasyComputerArchitecture
10/29/2025
Registering RAM
CookedComputerArchitecture
10/29/2025
Memory Addressing Modes
CookedComputerArchitecture
10/29/2025
Branch Instruction Types
CookedComputerArchitecture
10/29/2025
Pipeline Operation Basics
EasyComputerArchitecture
10/29/2025
Pipelining Performance Benefits
CookedComputerArchitecture
10/29/2025
Pipeline Performance Calculation
CookedComputerArchitecture
10/29/2025
Single-Cycle Processor Limitations
CookedComputerArchitecture
10/29/2025
Cache Inclusion
CookedComputerArchitecture
10/29/2025
What 'E'?
EasyComputerArchitecture
10/29/2025
CBimodal prediction.
MediumComputerArchitecture
10/29/2025
So, what's a TCP SACK?
EasyNetworking
10/29/2025
MTU Violation
CookedNetworking
10/29/2025
Typical MTU
CookedNetworking
10/29/2025
TCP Data Integrity
CookedNetworking
10/29/2025
IPv4 Compatible IPv6
EasyNetworking
10/29/2025
Class A Networks
CookedNetworking
10/29/2025
Whichcast
CookedNetworking
10/29/2025
Special Use Address 2
CookedNetworking
10/29/2025
Multicast Addressing
EasyNetworking
10/29/2025
Stayin' Dead
CookedNetworking
10/29/2025
ARP ARP ARP
CookedNetworking
10/29/2025
ARP Cache
CookedNetworking
10/29/2025
Gratuitous ARP
EasyNetworking
10/29/2025
Ethernet Type of ARP
EasyNetworking
10/29/2025
ARP Cache Clear
CookedNetworking
10/29/2025
Why even IP?
CookedNetworking
10/29/2025
IPv4 vs IPv6 Headers
EasyNetworking
10/29/2025
You're too big!
CookedNetworking
10/29/2025
IP Forwarding
CookedNetworking
10/29/2025
Broadcast vs Multicast
CookedNetworking
10/29/2025
Limited Broadcast Usage
EasyNetworking
10/29/2025
Multicast MAC Conversion
EasyNetworking
10/29/2025
Multicast Group Membership
CookedNetworking
10/29/2025
Broadcast Forwarding Behavior
EasyNetworking
10/29/2025
DNS Basic Function
CookedNetworking
10/29/2025
DNS Zones Purpose
EasyNetworking
10/29/2025
TCP Service Model
CookedNetworking
10/29/2025
TCP Reliability Mechanism
CookedNetworking
10/29/2025
TCP Three-way Handshake
CookedNetworking
10/29/2025
TCP TIME_WAIT Purpose
EasyNetworking
10/29/2025
TCP RTO Calculation
CookedNetworking
10/29/2025
TCP Flow Control Purpose
EasyNetworking
10/29/2025
Nagle Algorithm Purpose
CookedNetworking
10/29/2025
Silly Window Syndrome
EasyNetworking
10/29/2025
TCP Congestion Detection
EasyNetworking
10/28/2025
TCP Termination Process
CookedNetworking
10/28/2025
Private to Public
CookedNetworking
10/28/2025
NAT or ...
EasyNetworking
10/28/2025
Underlying Protocols
EasyNetworking
10/28/2025
Open Close Open Close
EasyNetworking
10/28/2025
Poll position.
EasyNetworking
10/28/2025
Cstd::is_signed<char>::value
EasyLanguageKnowledge
10/27/2025
CVoid Pointer Dereferencing
EasyLanguageKnowledge
10/27/2025
CBoolean Addition
CookedLanguageKnowledge
10/27/2025
CSigned Char == Unsigned Char?
MediumLanguageKnowledge
10/27/2025
CWhy std::make_shared?
MediumLanguageKnowledge
10/27/2025
CThrowing noexcept Method?
CookedLanguageKnowledge
10/27/2025
CCatching noexcept Method
EasyLanguageKnowledge
10/27/2025
CWoopsie noexcept Method
CookedLanguageKnowledge
10/27/2025
CThe headers you never knew
CookedLanguageKnowledge
10/27/2025
CC++'s Most What?
CookedLanguageKnowledge
10/27/2025
CTemplate Printer
EasyLanguageKnowledge
10/27/2025
CThrowing a wrench out of it.
CookedLanguageKnowledge
10/27/2025
CWhere did std::thread go?
EasyLanguageKnowledge
10/27/2025
CArms length
CookedLanguageKnowledge
10/27/2025
CStay there.
EasyLanguageKnowledge
10/27/2025
CNested Types in Templates
EasyLanguageKnowledge
10/27/2025
CWait a second...
EasyLanguageKnowledge
10/27/2025
CGlobal Local Lambda Capture
EasyLanguageKnowledge
10/27/2025
CLookup!
EasyLanguageKnowledge
10/27/2025
CWhat's Under Test 2
CookedLanguageKnowledge
10/27/2025
CSo, where is 1 stored?
CookedLanguageKnowledge
10/27/2025
CChanging Const?
CookedLanguageKnowledge
10/27/2025
C#square
CookedLanguageKnowledge
10/27/2025
CConst and Not Const
EasyLanguageKnowledge
10/27/2025
CUser / Standard Conversions
CookedLanguageKnowledge
10/27/2025
CBe careful.
MediumLanguageKnowledge
10/27/2025
CVector growth 2
CookedLanguageKnowledge
10/27/2025
CTwo Futures
EasyLanguageKnowledge
10/27/2025
CAuto Type Deduction Rules
CookedLanguageKnowledge
10/27/2025
CAuto with Braced Initializers
CookedLanguageKnowledge
10/27/2025
CMoved from.
EasyLanguageKnowledge
10/27/2025
COrdering matters?
CookedLanguageKnowledge
10/27/2025
CTemplate Specializations 2
MediumLanguageKnowledge
10/27/2025
CTemplate Specializations 3
EasyLanguageKnowledge
10/27/2025
CTo sign or not to sign?
EasyLanguageKnowledge
10/27/2025
CConstructing it, with it.
EasyLanguageKnowledge
10/27/2025
CSigned Integer Overflow
EasyLanguageKnowledge
10/27/2025
C#Pragma Roll
EasyLanguageKnowledge
10/27/2025
CWho’s Pointing at What?
EasyLanguageKnowledge
10/27/2025
CEven if nothing!
EasyLanguageKnowledge
10/26/2025
CIndexing arrays
CookedLanguageKnowledge
10/26/2025
CCannot Overload
EasyLanguageKnowledge
10/26/2025
CWhere is this?
EasyLanguageKnowledge
10/26/2025
CDouble flushing?
CookedLanguageKnowledge
10/26/2025
C3D Arrays
EasyLanguageKnowledge
10/26/2025
CWhat's the point?
EasyLanguageKnowledge
10/26/2025
CConditional Trap
EasyLanguageKnowledge
10/26/2025
CDecltype Hell
EasyLanguageKnowledge
10/26/2025
Cvirtual <<
EasyLanguageKnowledge
10/26/2025
CDo-while...
EasyLanguageKnowledge
10/26/2025
Cgoto? go where?
MediumLanguageKnowledge
10/26/2025
CIt's unique, but is it big?
CookedLanguageKnowledge
10/26/2025
C& and &&
CookedLanguageKnowledge
10/26/2025
Cauto&& T&& <T>&&
EasyLanguageKnowledge
10/26/2025
CComma'on!
EasyLanguageKnowledge
10/26/2025
CImplicitly Explicit
EasyLanguageKnowledge
10/26/2025
COnce or twice?
CookedLanguageKnowledge
10/26/2025
CDon't @ me
CookedLanguageKnowledge
10/25/2025
CCTAD
CookedLanguageKnowledge
10/25/2025
CTwo typeids
MediumLanguageKnowledge
10/25/2025
CHow does it allocate?
CookedLanguageKnowledge
10/25/2025
CBefore or after?
EasyLanguageKnowledge
10/25/2025
CFriends make you fat?
EasyLanguageKnowledge
10/25/2025
Cauto... &?
EasyLanguageKnowledge
10/25/2025
CIn one out the other.
EasyLanguageKnowledge
10/25/2025
CArray, Array, go away, come again another day.
MediumLanguageKnowledge
10/25/2025
CChildren make you fat?
EasyLanguageKnowledge
10/25/2025
CStatic Shenanigans
EasyLanguageKnowledge
10/25/2025
CNot this, again.
EasyLanguageKnowledge
10/25/2025
CThe const or the ?
MediumLanguageKnowledge
10/25/2025
CTemplate sum 2
EasyLanguageKnowledge
10/25/2025
Clong long
EasyLanguageKnowledge
10/25/2025
CAdding const, virtually?
EasyLanguageKnowledge
10/25/2025
CAre different things the same?
EasyLanguageKnowledge
10/25/2025
CCopy constructor, maybe.
MediumLanguageKnowledge
10/25/2025
CHerb's Destructor
CookedLanguageKnowledge
10/25/2025
CRemoving the polymorphic
MediumLanguageKnowledge
10/25/2025
CString placement
EasyLanguageKnowledge
10/19/2025
CEast to West
MediumLanguageKnowledge
10/19/2025
CWhere are we?
EasyLanguageKnowledge
10/16/2025
CYou're not a real person!
EasyLanguageKnowledge
10/16/2025
CNon-const reference T
CookedLanguageKnowledge
10/16/2025
CThere is no free template.
EasyLanguageKnowledge
10/16/2025
CIf you've used templates, you've run into this.
EasyLanguageKnowledge
10/16/2025
CIs it accessible?
EasyLanguageKnowledge
10/16/2025
CIs it converted?
EasyLanguageKnowledge
10/16/2025
CWill It Cascade?
EasyLanguageKnowledge
10/16/2025
CLook it up, buddy.
EasyLanguageKnowledge
10/16/2025
CIs it composed?
CookedLanguageKnowledge
10/16/2025
CWhere'd it go?
CookedLanguageKnowledge
10/16/2025
CIs it const?
EasyLanguageKnowledge
10/16/2025
CIs it used?
EasyLanguageKnowledge
10/16/2025
CErase it.
EasyLanguageKnowledge
10/16/2025
CCall it, improved.
CookedLanguageKnowledge
10/16/2025
CLocked up, they won't let me out.
EasyConcurrency
10/16/2025
CBimodal prediction II
HardComputerArchitecture
10/16/2025
CSOO, about that object.
EasyLanguageKnowledge
10/16/2025
CThe perfect union 2.
MediumLanguageKnowledge
10/16/2025
CGet around &.
EasyLanguageKnowledge
10/13/2025
CBetween two parts.
EasyLanguageKnowledge
10/13/2025
CTemplatey signatures.
EasyLanguageKnowledge
10/13/2025
Cint : =
MediumLanguageKnowledge
10/13/2025
CCatch me if you can!
EasyLanguageKnowledge
10/13/2025
CStreams of strings.
MediumLanguageKnowledge
10/13/2025
Csizeof your comprehension
MediumLanguageKnowledge
10/13/2025
C& through me.
EasyLanguageKnowledge
10/13/2025
C0.0_7
EasyLanguageKnowledge
10/13/2025
CWhere do we go now?
MediumLanguageKnowledge
10/13/2025
CStop! Don’t move!
EasyLanguageKnowledge
10/13/2025
C___ is to size_t
MediumLanguageKnowledge
10/13/2025
CLambda defaults
EasyLanguageKnowledge
10/13/2025
CString them together.
EasyLanguageKnowledge
10/13/2025
CForgot one?
EasyLanguageKnowledge
10/13/2025
C++i ++i
EasyLanguageKnowledge
10/13/2025
CIn the beginning...
EasyLanguageKnowledge
10/11/2025
CNull and void.
EasyLanguageKnowledge
10/11/2025
CTrap into it.
MediumLanguageKnowledge
10/11/2025
CForward, again.
EasyLanguageKnowledge
10/11/2025
CHow'd you read this?
EasyLanguageKnowledge
10/11/2025
CAm I missing something?
HardLanguageKnowledge
10/11/2025
CTo delete or not to delete
EasyLanguageKnowledge
10/11/2025
CKeep your cool, keep it constant.
EasyLanguageKnowledge
10/11/2025
CPlease proceed.
HardLanguageKnowledge
10/11/2025
Cis_lock_free()
EasyLanguageKnowledge
10/11/2025
CSpuriously failed...
EasyConcurrency
10/11/2025
CX ways
EasyLanguageKnowledge
10/11/2025
C3 exits
EasyLanguageKnowledge
10/11/2025
CDelete this. Now!
CookedLanguageKnowledge
10/11/2025
CGetting high(er).
MediumLanguageKnowledge
10/11/2025
CLet's link up.
EasyLanguageKnowledge
10/11/2025
CShort Flings, Long Affairs
MediumLanguageKnowledge
10/11/2025
COverloading lambdas!
EasyLanguageKnowledge
10/11/2025
CContainers for containers.
EasyLanguageKnowledge
10/11/2025
CPreprocessor chicanery
MediumLanguageKnowledge
10/11/2025
CFreedom?
EasyLanguageKnowledge
10/11/2025
CNah, we’re not moving.
MediumLanguageKnowledge
10/11/2025
CWe're virtually there.
MediumLanguageKnowledge
10/11/2025
CExit the function early.
EasyLanguageKnowledge
10/11/2025
CI'm here! Now I'm gone.
MediumLanguageKnowledge
10/4/2025
CWhat's zero?
MediumLanguageKnowledge
10/4/2025
CHaha…
MediumLanguageKnowledge
10/4/2025
CUnsigned - Unsigned
MediumLanguageKnowledge
10/4/2025
CObserve Closely
MediumLanguageKnowledge
10/4/2025
CWhat's a lambda?
EasyLanguageKnowledge
10/4/2025
CChop Chop Chop
MediumLanguageKnowledge
10/4/2025
Cdelete it.
EasyLanguageKnowledge
10/4/2025
CInitialization?!
EasyLanguageKnowledge
10/4/2025
CIn a Diamond
EasyLanguageKnowledge
10/4/2025
CWho comes first?
MediumLanguageKnowledge
10/4/2025
CAmpersand
CookedOperatingSystems
10/4/2025
CA, B, C, initializer_list
EasyLanguageKnowledge
10/4/2025
CWhat a Jump!
EasyLanguageKnowledge
10/4/2025
CWhere did it go?
EasyLanguageKnowledge
10/4/2025
CDereference++
MediumLanguageKnowledge
10/4/2025
CVector construction
CookedLanguageKnowledge
10/4/2025
CInitialization order.
MediumLanguageKnowledge
10/1/2025
CHe fumbled the [] operator.
EasyLanguageKnowledge
10/1/2025
CGreedy Greedy
MediumLanguageKnowledge
10/1/2025
CConst crashout 1
EasyLanguageKnowledge
10/1/2025
CI hate decltype
CookedLanguageKnowledge
10/1/2025
CWhat's wrong, loopy?
EasyLanguageKnowledge
10/1/2025
CUnsigned Integer Overflow
EasyLanguageKnowledge
10/1/2025
CConstructing it.
EasyLanguageKnowledge
10/1/2025
CDo you understand creation?
EasyLanguageKnowledge
10/1/2025
C++ before or after?
EasyLanguageKnowledge
10/1/2025
CTo <T> or not to <T>
EasyLanguageKnowledge
9/29/2025
CVector growth 1
EasyLanguageKnowledge
9/29/2025
CIt's a simple struct.
EasyLanguageKnowledge
9/29/2025
CMove!
EasyLanguageKnowledge
9/29/2025
CDon't end me.
EasyLanguageKnowledge
9/29/2025
C96% of you will fail this.
CrackedLanguageKnowledge
9/29/2025
CMethod-only objects
CookedLanguageKnowledge
9/29/2025
CClass Inheritance Access Control
EasyLanguageKnowledge
9/29/2025
CClass vs Struct
CookedLanguageKnowledge
9/29/2025
CEmpty Structs
EasyLanguageKnowledge
9/29/2025
CThe four socket amigos.
HardNetworking
9/29/2025
If the OS is running...
EasyOperatingSystems
9/29/2025
CAllocation decisions
EasyOperatingSystems
5/31/2025
CWhat even is a string?
MediumLanguageKnowledge
5/31/2025

Approved Submissions

TitleTypeRewardApproved
They're stacked.Question-11/17/2025
Shifting off the edgeQuestion-11/11/2025
East to WestQuestion-10/19/2025

Progress Overview

CorrectIncorrect