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Results for “sum”
Small, practical examples. Search by task or narrow things down below.
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Sum typed values with reduce
Accumulate numeric array elements.
reduce✓ Tested
Sum values per category
Calculate a grouped total.
SUM✓ Tested
Sum vector values
Use std::accumulate with a wide initial value.
C++✓ Tested
Summarize added and removed lines numerically
Git: Numstat provides tab-separated counts suitable for processing.
Git✓ Tested
Validate a small stored payload with a checksum
Arduino / C: Store a checksum with the payload and reject a changed byte.
Arduino / C✓ Tested
Verify a file against a checksum manifest
Linux Commands: Use sha256sum -c with a manifest obtained from a trusted source.
Linux Commands✓ Tested
Add values across several rows
SQL: Use SUM to calculate a total quantity.
SQL✓ Tested
Add values across several rows
SQL Server: Use SUM to calculate a total quantity.
SQL Server✓ Tested
Add values across several rows
Postgres: Use SUM to calculate a total quantity.
Postgres✓ Tested
Add values across several rows
SQLite: Use SUM to calculate a total quantity.
SQLite✓ Tested
Calculate a running total
Accumulate values in row order.
window✓ Tested
Calculate cumulative totals
C++: partial_sum writes the sum of each input prefix to the output sequence.
C++✓ Tested