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Do not use namespace using-directives.

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This commit is contained in:
neingeist 2014-08-19 08:28:36 +02:00
parent 7db74eb991
commit 782cb579e7
2 changed files with 8 additions and 5 deletions
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3
bad_alloc.cpp
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@ -2,7 +2,8 @@
#include <iostream> #include <iostream>
using namespace std; using std::cout;
using std::endl;
void dr_evil(int counter) { void dr_evil(int counter) {
int *array = new int[100000000000/(1+10*counter)]; int *array = new int[100000000000/(1+10*counter)];

10
list-initializers.cpp
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@ -4,11 +4,13 @@
#include <vector> #include <vector>
#include <utility> #include <utility>
using namespace std; using std::map;
using std::pair;
using std::vector;
int main() { int main() {
// notice how the lists are nested to match the templates' parameters: // notice how the lists are nested to match the templates' parameters:
map<string, vector<pair<string, int>>> name_languages_year { map<std::string, vector<pair<std::string, int>>> name_languages_year {
{"Dennis Ritchie", {{"B", 1969}, {"C", 1973}}}, {"Dennis Ritchie", {{"B", 1969}, {"C", 1973}}},
{"Niklaus Wirth", {{"Pascal", 1970}, {"Modula-2", 1973}, {"Niklaus Wirth", {{"Pascal", 1970}, {"Modula-2", 1973},
{"Oberon", 1986}}}, {"Oberon", 1986}}},
@ -17,7 +19,7 @@ int main() {
}; };
// prints `Pascal': // prints `Pascal':
cout << name_languages_year["Niklaus Wirth"].at(0).first << endl; std::cout << name_languages_year["Niklaus Wirth"].at(0).first << std::endl;
// adds a new entry to the map: // adds a new entry to the map:
name_languages_year["John McCarthy"] = { name_languages_year["John McCarthy"] = {
@ -25,5 +27,5 @@ int main() {
}; };
// prints 'Lisp': // prints 'Lisp':
cout << name_languages_year["John McCarthy"].at(0).first << endl; std::cout << name_languages_year["John McCarthy"].at(0).first << std::endl;
} }