Results for “Form serialization & state”
Small, practical examples. Search by task or narrow things down below.
Calculate a value with SELECT
SQLite: Evaluate a small arithmetic expression on the database server.
SQLite✓ Tested
Calculate whole days between dates
Subtract Julian day values for date-only inputs.
julianday✓ Tested
Check a script’s syntax without executing its body
Bash Scripts: bash -n parses commands but does not run ordinary script statements.
Bash Scripts✓ Tested
Check available disk space
Show total, used, and available filesystem space for the current directory in human-readable units.
disk✓ Tested
Check for a substring
Perform a case-sensitive JavaScript substring check.
JavaScript✓ 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 the size of a folder
Show a single total for the disk space used by a folder and its contents.
disk usage✓ Tested
Check whether text is valid JSON
Reject malformed input before processing it.
json_valid✓ Tested
Choose Bash with pipefail for build commands
Docker / Compose: SHELL changes the interpreter for subsequent shell-form instructions.
Docker / Compose✓ Tested
Collect ordered values into an array
Build a sorted array from query rows.
array_agg✓ Tested
Combine a stable entrypoint with default arguments
Docker / Compose: CMD supplies default arguments to an exec-form ENTRYPOINT.
Docker / Compose✓ Tested