[Term Entry] Swift Arrays: .count (#7202)

* [Term Entry] Swift Arrays: .count

* SEO changes

* Update count.md

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Author: Sriparno08

content/swift/concepts/arrays/terms/count/count.md

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+---
+Title: '.count'
+Description: 'Returns the number of elements in an array.'
+Subjects:
+  - 'Computer Science'
+  - 'Data Science'
+Tags:
+  - 'Arrays'
+  - 'Properties'
+  - 'Swift'
+  - 'Values'
+CatalogContent:
+  - 'learn-swift'
+  - 'paths/build-ios-apps-with-swiftui'
+---
+
+The Swift `.count` property is used to calculate the number of elements in an array. It's a built-in feature of Swift’s `Array` type and returns an `Int` that represents the number of elements in the array.
+
+## Swift `.count` Syntax
+
+```pseudo
+arrayName.count
+```
+
+**Parameters:**
+
+The Swift `.count` property takes no parameters.
+
+**Return value:**
+
+Returns an `Int` that represents the number of elements in the array.
+
+## Example 1: Using Swift `.count` on an Array
+
+In this example, the Swift `.count` property is used to find the number of elements in the `fruits` array:
+
+```swift
+let fruits = ["Apple", "Banana", "Mango"]
+print("Number of fruits: \(fruits.count)")
+```
+
+Here is the output:
+
+```shell
+Number of fruits: 3
+```
+
+## Example 2: Using Swift `.count` in a Conditional Statement
+
+In this example, Swift `.count` is used to check if the array is non-empty before performing calculations:
+
+```swift
+let scores = [95, 88, 76]
+
+if scores.count > 0 {
+  print("Scores available.")
+} else {
+  print("No scores available.")
+}
+```
+
+Here is the output:
+
+```shell
+Scores available.
+```
+
+## Example 3: Using Swift `.count` on an Empty Array
+
+In this example, the Swift `.count` property is used to find the length of an empty array:
+
+```swift
+let emptyArray: [String] = []
+
+if emptyArray.count == 0 {
+  print("The array is empty.")
+} else {
+  print("The array is not empty.")
+}
+```
+
+Here is the output:
+
+```shell
+The array is empty.
+```
+
+## Frequently Asked Questions
+
+### 1. Is Swift `.count` the same as `.length` in other languages?
+
+Yes. While many languages like JavaScript use `.length`, Swift uses `.count`. They serve the same purpose — returning the number of elements in an array — but the name differs according to language conventions.
+
+### 2. Is Swift `.count` performance-intensive for large arrays?
+
+No. Swift `.count` is efficient because it’s a computed property that retrieves an already-known size, not by iterating through the array.
+
+### 3. Can Swift `.count` be used with other collection types?
+
+Yes. Swift `.count` can also be used with:
+
+- Strings (Returns the number of characters)
+- Dictionaries (Returns the number of key-value pairs)
+- Sets (Returns the number of unique elements)