codementor on Nostr: Learn: Building strings in a loop A C# string can't change, so result += text creates ...
Learn: Building strings in a loop
A C# string can't change, so result += text creates a brand new string every time and copies everything so far. In a loop that adds up to O(n²).
The docs warn that many repeated changes to a string cost a lot of performance. Use a StringBuilder, then call ToString() once at the end.
#tip · TIP-019
Published at
2026-10-27 11:37:50 UTCEvent JSON
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"content": "Learn: Building strings in a loop\n\nA C# string can't change, so result += text creates a brand new string every time and copies everything so far. In a loop that adds up to O(n²).\n\nThe docs warn that many repeated changes to a string cost a lot of performance. Use a StringBuilder, then call ToString() once at the end.\n\n#tip · TIP-019",
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