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PythonGetting Started

Count the items in a collection

Python: Read the collection’s length instead of hard-coding the loop limit.

Python✓ Tested
C#Getting Started

Count the items in a collection

C#: Read the collection’s length instead of hard-coding the loop limit.

C#✓ Tested
JavaGetting Started

Count the items in a collection

Java: Read the collection’s length instead of hard-coding the loop limit.

Java✓ Tested
JavaScriptGetting Started

Count the items in a collection

JavaScript: Read the collection’s length instead of hard-coding the loop limit.

JavaScript✓ Tested
TypeScriptGetting Started

Count the items in a collection

TypeScript: Read the collection’s length instead of hard-coding the loop limit.

TypeScript✓ Tested
C++Getting Started

Count the items in a collection

C++: Read the collection’s length instead of hard-coding the loop limit.

C++✓ Tested
CGetting Started

Count the items in a collection

C: Read the collection’s length instead of hard-coding the loop limit.

C✓ Tested
SQLGetting Started

Count the rows in a table

SQL: COUNT(*) includes every row, including rows with NULL columns.

SQL✓ Tested
SQL ServerGetting Started

Count the rows in a table

SQL Server: COUNT(*) includes every row, including rows with NULL columns.

SQL Server✓ Tested
PostgresGetting Started

Count the rows in a table

Postgres: COUNT(*) includes every row, including rows with NULL columns.

Postgres✓ Tested
SQLiteGetting Started

Count the rows in a table

SQLite: COUNT(*) includes every row, including rows with NULL columns.

SQLite✓ 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