Method resizeColUnsafe

buffer.go:229–259

resizeColUnsafe adjusts the number of columns (must be called with lock held) Fills missing columns with "NaN"

(n int)

// resizeColUnsafe adjusts the number of columns (must be called with lock held)
// Fills missing columns with "NaN"
func (b *Buffer) resizeColUnsafe(n int) {
	if n <= 0 {
		return
	}

	lackLen := b.colLen - n
	if lackLen < 0 {
		lackLen = n - b.colLen
		oldColLen := b.colLen
		b.colLen = n

		// Resize colType array if needed
		if len(b.colType) < n+1 {
			newColType := make([]int, n+1)
			copy(newColType, b.colType)
			b.colType = newColType
		}

		// Initialize new column types to colTypeStr (default)
		for i := oldColLen; i < n; i++ {
			b.colType[i] = colTypeStr
		}
	}

	// Fill missing columns with NaN
	for ii := range b.cont {
		for m := 0; m < lackLen; m++ {
			b.cont[ii] = append(b.cont[ii], "NaN")
		}
	}
}

// resizeCol adjusts the number of columns (thread-safe)
func (b *Buffer) resizeCol(n int) {