Results for “Signals & state”
Small, practical examples. Search by task or narrow things down below.
Handle a failed file open through stream state
C++: An unopened input stream is not an empty successful file read.
C++✓ Tested
Initialize state lazily
Initialize state lazily with a small React component and explicit browser behavior.
React✓ Tested
Inspect a deferred’s lifecycle state
jQuery: state reports pending, resolved, or rejected.
jQuery✓ Tested
Keep component state with useState
Keep component state with useState with a small React component and explicit browser behavior.
React✓ Tested
Keep function state between calls
C: A static local variable retains its stored value for the lifetime of the process.
C✓ Tested
Keep function-local assignments separate from caller state
PowerShell: Ordinary function assignments create local variables rather than replacing the caller’s variable.
PowerShell✓ Tested
Keep loop state by avoiding a pipeline subshell
Bash Scripts: Redirect input into a while loop so updates to a counter remain in the current shell.
Bash Scripts✓ Tested
Keep separate state for separate hook calls
Keep separate state for separate hook calls with a small React component and explicit browser behavior.
React✓ Tested
Mark a nonurgent state update as a transition
Mark a nonurgent state update as a transition with a small React component and explicit browser behavior.
React✓ Tested
Memoize a sorted copy of state
Memoize a sorted copy of state with a small React component and explicit browser behavior.
React✓ Tested
Preserve input state when tracked records reorder
Preserve input state when tracked records reorder with a standalone Angular component and explicit browser behavior.
Angular✓ Tested
Preserve item state while reordering by key
Preserve item state while reordering by key with a small React component and explicit browser behavior.
React✓ Tested