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--- cpp:stl:containers [2020/05/28 17:10] – [Αναζήτηση στοιχείου] gthanos
+++ cpp:stl:containers [2020/05/28 17:44] – [Αναζήτηση στοιχείου] gthanos
@@ Line 233: / Line 233: @@
 === Αναζήτηση σε unordered set ===
+// unordered_set::find
+#include <iostream>
+#include <string>
+#include <unordered_set>
+template<typename T>
+void print_set(std::unordered_set<T>& myset) {
+  std::cout << "myset contains:";
+  for (auto it=myset.begin(); it!=myset.end(); ++it)
+    std::cout << ' ' << *it;
+  std::cout << '\n';
+}
+int main () {
+  std::unordered_set<std::string> myset;
+  std::unordered_set<std::string>::iterator it;
+  char* word[] = { "sugar", "choco", "milk", "banana", "coffee" };
+  // unordered_set some initial values:
+  for (int i=0; i<5; i++)
+    myset.emplace(word[i]);
+  print_set(myset);
+  it=myset.find(std::string("biscuits"));
+  if(it != myset.end()) {
+    myset.erase (it);
+    std::cout << "'buiscuits' erased\n";
+  }
+  else
+    std::cout << "'buiscuits' not found\n";
+  print_set(myset);
+  myset.erase (myset.find(std::string("milk")));
+  std::cout << "'milk' erased\n";
+  print_set(myset);
+  return 0;
+}
+<WRAP important 80% center round>
+</WRAP>