Results for “IS NULL”
Small, practical examples. Search by task or narrow things down below.
Replace text in a string
Replace every occurrence of a substring and keep the result in a new string. The original string is unchanged.
string✓ Tested
Replace text with sed
Replace all occurrences of the substring old on each line and print the transformed text without changing the input file.
sed✓ Tested
Replace the URL of a configured remote
Git: set-url changes configuration without fetching or pushing any objects.
Git✓ Tested
Report duplicate business values and their frequency
SQL: Group by a candidate business key and retain only groups with multiple rows.
SQL✓ Tested
Report duplicate business values and their frequency
SQL Server: Group by a candidate business key and retain only groups with multiple rows.
SQL Server✓ Tested
Report duplicate business values and their frequency
Postgres: Group by a candidate business key and retain only groups with multiple rows.
Postgres✓ Tested
Report duplicate business values and their frequency
SQLite: Group by a candidate business key and retain only groups with multiple rows.
SQLite✓ Tested
Report partial success from multiple actions
Report partial success from multiple actions with a small React component and explicit browser behavior.
React✓ Tested
Report progress before completion
jQuery: notify calls registered progress handlers while the deferred is pending.
jQuery✓ Tested
Represent a decimal quantity with a scaled integer
Arduino / C: Integer hundredths avoid floating-point storage for fixed-precision values.
Arduino / C✓ Tested
Represent an enabled state
Arduino / C: Represent an enabled state on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Require a checkbox to be selected
HTML: A required checkbox is invalid until that individual control is checked.
HTML✓ Tested