About: Flip-flop (programming)

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In computer programming, a flip-flop is a seldom-used syntactic construct which allows a boolean to flip from false to true when a first condition is met and then back to false when a second condition is met. The syntax is available in the programming languages Perl and Ruby. Similar logic is available in sed and awk. A flip-flop with first condition A and second condition B is not equivalent to "if A and not B", as the former has persistent state and is true even if A is no longer true, as long as at some point in the past A was true and B has always been false.

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  • In computer programming, a flip-flop is a seldom-used syntactic construct which allows a boolean to flip from false to true when a first condition is met and then back to false when a second condition is met. The syntax is available in the programming languages Perl and Ruby. Similar logic is available in sed and awk. A flip-flop with first condition A and second condition B is not equivalent to "if A and not B", as the former has persistent state and is true even if A is no longer true, as long as at some point in the past A was true and B has always been false. (en)
  • 计算机编程中，翻转（flip-flop）运算符是指一种运算符，当第一个操作数的值变为真，则操作符的结果从假变为真；当第二个操作数的值变为真，则操作符的结果从真变为假。Perl语言和Ruby，以及sed和awk有这种运算符。 (zh)
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  • In computer programming, a flip-flop is a seldom-used syntactic construct which allows a boolean to flip from false to true when a first condition is met and then back to false when a second condition is met. The syntax is available in the programming languages Perl and Ruby. Similar logic is available in sed and awk. A flip-flop with first condition A and second condition B is not equivalent to "if A and not B", as the former has persistent state and is true even if A is no longer true, as long as at some point in the past A was true and B has always been false. (en)
  • 计算机编程中，翻转（flip-flop）运算符是指一种运算符，当第一个操作数的值变为真，则操作符的结果从假变为真；当第二个操作数的值变为真，则操作符的结果从真变为假。Perl语言和Ruby，以及sed和awk有这种运算符。 (zh)
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  • Flip-flop (programming) (en)
  • 翻转运算符 (zh)
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