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

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Bash ScriptsGetting Started

Count down with a while loop

Bash Scripts: Count down with a while loop with a small standalone Bash program.

Bash Scripts✓ Tested
Arduino / CGetting Started

Count five LED flashes with a for loop

Arduino / C: Repeat an LED action a known number of times and print the current count.

Arduino / C✓ Tested
SQLReporting & grouped calculations

Count rows satisfying separate conditions

SQL: SUM over CASE expressions calculates several conditional counts in one scan.

SQL✓ Tested
SQL ServerReporting & grouped calculations

Count rows satisfying separate conditions

SQL Server: SUM over CASE expressions calculates several conditional counts in one scan.

SQL Server✓ Tested
PostgresReporting & grouped calculations

Count rows satisfying separate conditions

Postgres: SUM over CASE expressions calculates several conditional counts in one scan.

Postgres✓ Tested
SQLiteReporting & grouped calculations

Count rows satisfying separate conditions

SQLite: SUM over CASE expressions calculates several conditional counts in one scan.

SQLite✓ Tested
CSmall algorithms & bit operations

Count set bits in an unsigned integer

C: Clearing the lowest set bit on each iteration counts only one iteration per set bit.

C✓ Tested
JavaText validation & formatting

Count Unicode code points

Java: Use codePointCount when supplementary characters should count as one rather than two UTF-16 units.

Java✓ Tested
AngularServices & dependency injection

Create a dependency with a provider factory

Create a dependency with a provider factory with a standalone Angular component and explicit browser behavior.

Angular✓ Tested
AngularPipes & formatting

Create a small pure formatting pipe

Create a small pure formatting pipe with a standalone Angular component and explicit browser behavior.

Angular✓ Tested
SQLGetting Started

Create a table and insert its first row

SQL: Define column types and a primary key, then insert one row using an explicit column list.

SQL✓ Tested
SQL ServerGetting Started

Create a table and insert its first row

SQL Server: Define column types and a primary key, then insert one row using an explicit column list.

SQL Server✓ Tested