v1.16.9

ADDED:
* netx.IsPub
* encodingx/hexx

Rest are mostly small corrections and docs

stringsx/funcs.go

@@ -10,6 +10,53 @@ import (
 	`unicode`
 )
 
+/*
+HasBookend returns true if string s both begins AND ends with sym.
+
+It is more strict than [HasBoundary] (which only requires
+that s has sym at the beginning OR the end.)
+
+Examples:
+	HasBookend("|foo|", "|")    → true
+	HasBookend("|foo", "|")     → false
+	HasBookend("foo|", "|")     → false
+	HasBookend("fo|o", "|")     → false
+	HasBookend("|foo| ", "|")   → false // Whitespace prevents match
+	HasBookend(" |foo| ", "|")  → false
+
+sym may be a multi-rune string.
+If sym is empty, HasBookend will *always* return true.
+*/
+func HasBookend(s, sym string) (bounded bool) {
+
+	bounded = strings.HasPrefix(s, sym) && strings.HasSuffix(s, sym)
+
+	return
+}
+
+/*
+HasBoundary returns true if string s starts OR ends with symbol sym.
+
+Examples:
+	HasBoundary("|foo|", "|")    → true
+	HasBoundary("|foo", "|")     → true
+	HasBoundary("foo|", "|")     → true
+	HasBoundary("fo|o", "|")     → false
+	HasBoundary("|foo| ", "|")   → true
+	HasBoundary(" |foo| ", "|")  → false // Whitespace prevents match
+
+sym may be a multi-rune string.
+If sym is empty, HasBoundary will *always* return true.
+
+If you instead require string s to be *enclosed* by sym, see [HasBookend].
+*/
+func HasBoundary(s, sym string) (bounded bool) {
+	
+	bounded = strings.HasPrefix(s, sym) || strings.HasSuffix(s, sym)
+	
+	return
+}
+
 /*
 IsAscii returns true if all characters in string s are ASCII.