Merge pull request 'Performance enhancement for transaction creation' (#83) from rav001 into milestone2

Reviewed-on: #83

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.6.2.0]
+
+### Changed
+
+- Performance enhancement for transaction creation
+
 ## [0.6.1.1]
 
 ### Added

src/ZcashHaskell/Utils.hs

@@ -136,9 +136,13 @@ createTransaction ::
   -> Bool -- ^ True to build, False to estimate fee
   -> Either TxError HexString
 createTransaction sapAnchor orchAnchor tSpend sSpend oSpend outgoing sParams oParams znet bh build =
-  if BS.length (hexBytes txResult) > 1
-    then Right txResult
-    else case head (BS.unpack $ hexBytes txResult) of
+  processResult $! txResult
+  where
+    processResult :: HexString -> Either TxError HexString
+    processResult input =
+      if BS.length (hexBytes input) > 1
+        then Right input
+        else case head (BS.unpack $ hexBytes input) of
                0 -> Left InsufficientFunds
                1 -> Left ChangeRequired
                2 -> Left Fee
@@ -151,7 +155,6 @@ createTransaction sapAnchor orchAnchor tSpend sSpend oSpend outgoing sParams oPa
                9 -> Left SaplingBuilderNotAvailable
                10 -> Left OrchardBuilderNotAvailable
                _ -> Left ZHError
-  where
     txResult =
       withPureBorshVarBuffer $
       rustWrapperCreateTx

zcash-haskell.cabal

@@ -5,7 +5,7 @@ cabal-version: 3.0
 -- see: https://github.com/sol/hpack
 
 name:           zcash-haskell
-version:        0.6.1.1
+version:        0.6.2.0
 synopsis:       Utilities to interact with the Zcash blockchain
 description:    Please see the README on the repo at <https://git.vergara.tech/Vergara_Tech/zcash-haskell#readme>
 category:       Blockchain