Фото: Liesa Johannssen / Reuters
For instance, let’s say we’re programming a module that controls an electrical gate of a canal lock. If the public API was to require a voltage value needed for the engine to lift the gate - that would violate the Information Hiding a great deal. First of all, the user of the module would need to know the details of the engine. Second of all, changing the gate to a pneumatic one would completely break all the code that uses the module. In terms of software design the equivalent violation would be to catch SqlException in the Business-Module. If I were to propose an implementation that leverages Information Hiding, it would be to accept the opening ratio instead of the voltage.
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Even now, 27 years on, Kenny Logan still remembers how good it felt. Back in 1999, as this year, Scotland were title outsiders before a crunch fixture against the defending champions, France. Beneath a bright blue Parisian sky they gloriously ripped up the script with five first-half tries and, thanks to England’s late implosion against Wales at Wembley a day later, hoisted the trophy at Murrayfield in front of 15,000 fans on the Monday.
“Our aim is to be a technology leader and to integrate new
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