Merge pull request #1 from aykhans/v1.0.3

Author: aykhans

README.md

@@ -22,6 +22,20 @@ num := 42
 ptr := common.ToPtr(num)  // *int
 ```
 
+**IsNilOrZero** - Check if a pointer is nil or points to a zero value
+```go
+import "github.com/aykhans/go-utils/common"
+
+var ptr *int
+common.IsNilOrZero(ptr)  // true (nil pointer)
+
+num := 0
+common.IsNilOrZero(&num)  // true (zero value)
+
+num = 42
+common.IsNilOrZero(&num)  // false (non-zero value)
+```
+
 ### parser
 
 String parsing utilities with generic type support.
@@ -94,6 +108,27 @@ maps.UpdateMap(&old, new)
 // old is now: {"a": 1, "b": 3, "c": 4}
 ```
 
+### number
+
+Number utility functions.
+
+**NumLen** - Calculate the number of digits in an integer
+```go
+import "github.com/aykhans/go-utils/number"
+
+number.NumLen(42)      // returns 2
+number.NumLen(-128)    // returns 3
+number.NumLen(0)       // returns 1
+number.NumLen(1000)    // returns 4
+
+// Works with all integer types
+number.NumLen(int8(99))           // returns 2
+number.NumLen(int64(123456789))   // returns 9
+number.NumLen(uint32(4294967295)) // returns 10
+```
+
+Supported types: `int`, `int8`, `int16`, `int32`, `int64`, `uint`, `uint8`, `uint16`, `uint32`, `uint64`, `uintptr`
+
 ### errors
 
 Advanced error handling utilities.

common/compare.go

@@ -0,0 +1,10 @@
+package common
+
+func IsNilOrZero[T comparable](value *T) bool {
+	if value == nil {
+		return true
+	}
+
+	var zero T
+	return *value == zero
+}