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-rw-r--r--calcchain.go1
1 files changed, 1 insertions, 0 deletions
diff --git a/calcchain.go b/calcchain.go
index 6fbdcd7..22aab7e 100644
--- a/calcchain.go
+++ b/calcchain.go
@@ -54,6 +54,7 @@ func (f *File) deleteCalcChain(index int, axis string) {
type xlsxCalcChainCollection []xlsxCalcChainC
+// Filter provides a function to filter calculation chain.
func (c xlsxCalcChainCollection) Filter(fn func(v xlsxCalcChainC) bool) []xlsxCalcChainC {
results := make([]xlsxCalcChainC, 0)
for _, v := range c {