重構去除負號

2020-05-06 09:26:22 +08:00
parent cdea96e314
commit 45511aaaa4
1 changed files with 3 additions and 1 deletions
--- a/AndroidCalculator/Calculator.swift
+++ b/AndroidCalculator/Calculator.swift
@@ -106,7 +106,9 @@ class Calculator {
        formula.append("0")
      }
      if formula.last!.firstIndex(of: "-") != nil {
-        formula.append(String(formula.popLast()!.split(separator: "-")[0]))
+        var number = formula.popLast()!
+        number.removeFirst()
+        formula.append(number)
      } else {
        formula.append("-" + formula.popLast()!)
      }