What does Flutter Precache do?

precache method Null safety Attempts to evaluate the finder . Returns whether any elements in the tree matched the finder. If any did, then the result is cached and can be obtained from evaluate. If this returns true, you must call evaluate before you call precache again.

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What is image placeholder?

An image placeholder is a dummy image designed to draw attention to the need for an actual image . Wikipedia image placeholders were meant to be used on articles, especially those of living people, for the purpose of trying to obtain a freely-licensed image for them.

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