From 1763d1773a7238b2282c399865857ba3dbeb7c2f Mon Sep 17 00:00:00 2001
From: Jeffery Thompson <jeffery.thompson@wedoresi.com>
Date: Fri, 30 Mar 2018 15:47:46 -0400
Subject: [PATCH] feat: add TryParseSkipFailures extension

---
 .../Extensions/EnumerableExtensions.cs        | 36 ++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/ICD.Common.Utils/Extensions/EnumerableExtensions.cs b/ICD.Common.Utils/Extensions/EnumerableExtensions.cs
index 5233bd5..3bc0fd4 100644
--- a/ICD.Common.Utils/Extensions/EnumerableExtensions.cs
+++ b/ICD.Common.Utils/Extensions/EnumerableExtensions.cs
@@ -1057,6 +1057,40 @@ namespace ICD.Common.Utils.Extensions
 			}
 		}
 
+        // since S# can't do anonymous types
+        private struct TryParseStruct<T>
+        {
+            public readonly T value;
+            public readonly bool isParsed;
+            public TryParseStruct(T value, bool isParsed)
+            {
+                this.value = value;
+                this.isParsed = isParsed;
+            }
+        }
+        // since Func<...,T> can't specify `out` parameters
+        public delegate bool TryParseDelegate<T>(string input, out T output);
+
+        /// <summary>
+        /// Attempts to parse each value of the enumerable,
+        /// throwing away the values that don't parse correctly.
+        /// </summary>
+        /// <typeparam name="T">type to parse to</typeparam>
+        /// <param name="extends">enumerable of strings to parse</param>
+        /// <param name="tryParseFunc">TryParse function for given type</param>
+        /// <returns>enumerable of successfully parsed values</returns>
+        public static IEnumerable<T> TryParseSkipFailures<T>(this IEnumerable<string> extends, TryParseDelegate<T> tryParseFunc)
+        {
+            return extends.Select(str =>
+            {
+                T value = default(T);
+                bool isParsed = tryParseFunc(str, out value);
+                return new TryParseStruct<T>(value, isParsed);
+            })
+            .Where(v => v.isParsed == true)
+            .Select(v => v.value);
+        }
+
 #if SIMPLSHARP
 
 		/// <summary>
@@ -1093,5 +1127,5 @@ namespace ICD.Common.Utils.Extensions
 		}
 
 #endif
-	}
+    }
 }