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The **`.erase()`** method removes an element by it's key from a map.

## Syntax

```pseudo
mapName.erase(key);
```

The `key` is the element to be erased.

## Codebyte Example

The following codebyte example uses `.erase()` to remove an element from the `fields` map:

```codebyte/cpp
#include <iostream>
#include <iterator>
#include <map>

int main() {
  // Initializing map with items
  std::map<std::string, std::string> fields {{"zero", "0"}, {"one", "1"},  {"two", "2"}, {"three", "3"}};

  // Removing an item
  fields.erase("three");

  // Initializing iterator
  std::map<std::string, std::string> :: iterator iter;

  // Print map
  for (iter = fields.begin(); iter != fields.end(); ++iter) {
    std::cout << '\t' << iter->first << '\t' << iter->second
    << '\n';
  }
}
```


.erase()

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