Bifalgorithm post · Computer science one · Accessor & Mutator Methods

How do accessor and mutator methods provide access to private member variables?

How do accessor and mutator methods provide access to private member variables? (Computer science one · Accessor & Mutator Methods) — "Since we have made all t…

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Private member variables restrict access to an object's data.
Code outside the class cannot access or modify private member variables.
Making member variables private is generally good practice.
If external code must access or change the values, accessor and mutator methods can be defined.
Getter and setter methods facilitate controlled access and mutation.
A getter returns the value of an instance variable.
A setter takes a value and assigns it to an instance variable.
Getter and setter names commonly use the get or set prefix with lower camel casing.
The example defines getFirstName() and setFirstName($firstName).
getFirstName() returns $this->firstName.
setFirstName($firstName) assigns the argument to $this->firstName.

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How do accessor and mutator methods provide access to private member variables?

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Computer science one

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sam23

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"Since we have made all the member variables private, no code outside the class may access or modify their values. It is generally good practice to make member variables private to restrict access. However, if we still want code outside the object to access or mutate (that is, change) the variable values, we can define accessor and mutator methods (or simply getter and setter methods) to facilitate this. Each getter method returns the value of the instance’s variable while each setter method takes a value and sets the instance’s variable to the new value. It is common to name each getter/setter by prefixing a get and set to the variable’s name using lower camel casing. For example:\n\n1 public function getFirstName() {\n\n2 return $this->firstName;\n\n3 }\n\n4\n\n5 public function setFirstName($firstName) {\n\n6 $this->firstName = $firstName;\n\n7 }"

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