Results for “k”
Small, practical examples. Search by task or narrow things down below.
Check exact array membership
Bash Scripts: Compare each element literally instead of searching a concatenated string.
Bash Scripts✓ Tested
Check for a hashtable key before reading it
PowerShell: ContainsKey distinguishes a missing key from a key whose value happens to be null.
PowerShell✓ Tested
Check for a substring
Perform a case-sensitive JavaScript substring check.
JavaScript✓ Tested
Check for an installed command
Bash Scripts: command -v checks command resolution without assuming a specific installation path.
Bash Scripts✓ Tested
Check JSONB containment
Test whether an object contains a key-value pair.
jsonb✓ Tested
Check memory usage
Show memory and swap totals in human-readable units. The available column estimates memory usable by new applications.
memory✓ Tested
Check native form validity before proceeding
jQuery: Use the native checkValidity API from the selected form.
jQuery✓ Tested
Check out another branch in a second working tree
Git: A linked worktree shares repository objects while maintaining a separate checked-out branch.
Git✓ Tested
Check positive integer addition before performing it
C: Check the upper boundary before adding two known nonnegative integers.
C✓ Tested
Check that a file is present and nonempty
Test file content availability before reading it.
file check✓ Tested
Check that an image has layer history
Docker / Compose: history shows the instructions associated with image layers.
Docker / Compose✓ Tested
Check the Gregorian leap-year rule
Java: Use Year.isLeap rather than checking divisibility by four alone.
Java✓ Tested