Q531. How do Angular route guards and lazy loading work together?
The router supports guards that run during navigation: CanActivate, CanActivateChild, CanDeactivate for unsaved forms, CanMatch for feature flags, and Resolve to prefetch...
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Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (2,728 available).
Q532. How do Vue flush timing and the scheduler affect watchers?
Vue 3 batches reactive updates with a scheduler. When trigger fires, the affected render effects and watchers are queued and flushed in a microtask, so several synchronou...
Q533. When should you use find -exec versus xargs, and how do you handle odd filenames?
Both run a command for many files, but they differ in safety and performance. ```bash find . -name '*.tmp' -exec rm -- {} + # batches, handles spaces find . -name '*.tmp'...
Q534. How does Ruby resolve a method call through the ancestor chain?
Ruby resolves a call by walking the receiver's singleton class, then the class, then included modules and superclasses, in order. `Module#ancestors` prints the chain. ```...
Q535. How do async/await, tasks and actors support structured concurrency?
Swift's structured concurrency builds on `async`/`await`, `Task` and `TaskGroup`. An `async` function can suspend without blocking a thread, and `await` marks a potential...
Q536. How does structured concurrency and cancellation work with coroutines?
A coroutine is cooperative: cancellation sets a flag that the coroutine must observe. Suspend functions from `kotlinx.coroutines` check automatically and throw `Cancellat...
Q537. How does the .NET garbage collector work, including generations and the LOH?
.NET uses a generational, compacting, tracing collector. New objects go to generation 0. Survivors are promoted to gen 1 then gen 2. Gen 0 collections are frequent and ch...
Q538. How do templates, specialization and concepts work?
Templates parameterise code by type and are instantiated at compile time, giving zero-cost abstraction. ```cpp template T maxOf(T a, T b) { return a > b ? a : b; } templa...
Q539. When would you use Rc, Arc, RefCell or Mutex?
Ownership allows one owner, but graphs and shared state need more. Rust pushes the choice into types. - `Rc`: single-threaded reference counting. `clone` increments a cou...
Q540. What is the context package used for and how do you use it correctly?
`context.Context` carries deadlines, cancellation signals and request-scoped values across API boundaries and goroutines. It is how cancellation and timeouts propagate th...