From bf9a8355494eac18812f3caf6d469962824f627f Mon Sep 17 00:00:00 2001
From: Harris <mike.harris@cerner.com>
Date: Mon, 28 Oct 2019 10:34:21 -0500
Subject: Reduce allocations when writing

Fix #494

If a row is full, don't bother allocating a new one, just return it.

Use the last populated row as a hint for the size of new rows.

Simplify checkSheet to remove row map
---
 xmlWorksheet.go | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'xmlWorksheet.go')

diff --git a/xmlWorksheet.go b/xmlWorksheet.go
index 96ca235..8408cfa 100644
--- a/xmlWorksheet.go
+++ b/xmlWorksheet.go
@@ -430,6 +430,10 @@ type xlsxC struct {
 	XMLSpace xml.Attr `xml:"space,attr,omitempty"`
 }
 
+func (c *xlsxC) hasValue() bool {
+	return c.S != 0 || c.V != "" || c.F != nil || c.T != ""
+}
+
 // xlsxF directly maps the f element in the namespace
 // http://schemas.openxmlformats.org/spreadsheetml/2006/main - currently I have
 // not checked it for completeness - it does as much as I need.
-- 
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