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Results for “Errors & optional values”

Small, practical examples. Search by task or narrow things down below.

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HTMLData & disclosure

Create a native disclosure

Use details and summary to show optional HTML content without JavaScript.

HTML✓ Tested
C#LINQ transformations

Create a reusable one-to-many lookup

C#: ToLookup groups values by key and returns an empty sequence for an unknown key.

C#✓ Tested
SQLiteTables & writes

Create a STRICT table

Require values compatible with declared column types.

STRICT✓ Tested
CBinary formats & structured parsing

Decode a 16-bit big-endian integer

C: Promote bytes to an unsigned integer type before combining shifted values.

C✓ Tested
JavaFile operations & binary data

Delete a known temporary file if present

Java: deleteIfExists returns whether a file was removed and still reports other I/O errors.

Java✓ Tested
SQLReporting & grouped calculations

Distinguish row count from non-null value count

SQL: COUNT(*) includes every row while COUNT(column) skips NULL values.

SQL✓ Tested
SQL ServerReporting & grouped calculations

Distinguish row count from non-null value count

SQL Server: COUNT(*) includes every row while COUNT(column) skips NULL values.

SQL Server✓ Tested
PostgresReporting & grouped calculations

Distinguish row count from non-null value count

Postgres: COUNT(*) includes every row while COUNT(column) skips NULL values.

Postgres✓ Tested
SQLiteReporting & grouped calculations

Distinguish row count from non-null value count

SQLite: COUNT(*) includes every row while COUNT(column) skips NULL values.

SQLite✓ Tested
Docker / ComposeCompose service options

Drop capabilities for a Compose service

Docker / Compose: cap_drop ALL removes optional Linux capabilities.

Docker / Compose✓ Tested
SQLConstraints & defaults

Enforce a bounded numeric range

SQL: A named CHECK constraint keeps numeric values inside an inclusive interval.

SQL✓ Tested
SQL ServerConstraints & defaults

Enforce a bounded numeric range

SQL Server: A named CHECK constraint keeps numeric values inside an inclusive interval.

SQL Server✓ Tested