Results for “counts”

C++Sequence algorithms

Count elements satisfying a predicate ↗

C++: count_if counts matches without constructing a filtered collection.

C++✓ Tested

SQLExpressions & aggregates

Count rows per category ↗

Aggregate rows sharing the same category.

GROUP BY✓ 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

Bash ScriptsArray operations

Count the elements in an array ↗

Bash Scripts: The array length form counts assigned elements, not characters in the first value.

Bash Scripts✓ Tested

C++Collections

Count word frequencies ↗

Accumulate word counts in an ordered C++ map.

C++✓ Tested

C#Collections

Count words with GroupBy ↗

Group repeated C# words and print ordered counts.

C#✓ Tested

Bash ScriptsParameter expansion

Read a string’s character length ↗

Bash Scripts: Bash parameter length counts characters under the current locale.

Bash Scripts✓ Tested

PowerShellArray operations

Read the last array element ↗

PowerShell: A negative array index counts backward from the end.

PowerShell✓ Tested