refactor: use char overload for StringBuilder.Append #375
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This PR replaces instances of StringBuilder.Append(string) when appending single characters with the more efficient Append(char) overload. By using char literals instead of one-character strings, we reduce unnecessary string allocations and improve performance.
- Consider using more appropriate overload `StringBuilder.Append(char)`: In multiple spots the code was calling `Append(" ")` or `Append("&")`, which allocates a new string for each call. These have been replaced with `Append(' ')` and `Append('&')` respectively to leverage the `Append(char)` overload and cut down on memory usage.
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This PR replaces instances of StringBuilder.Append(string) when appending single characters with the more efficient Append(char) overload. By using char literals instead of one-character strings, we reduce unnecessary string allocations and improve performance.
StringBuilder.Append(char): In multiple spots the code was callingAppend(" ")orAppend("&"), which allocates a new string for each call. These have been replaced withAppend(' ')andAppend('&')respectively to leverage theAppend(char)overload and cut down on memory usage.