The section of the video at 2:20 is particularly informative. Here is a helpful video from the Flutter team which goes into greater depth on when and where to use keys and the various types of keys you might use, depending on the situation. What does scaffold mean Information and translations of scaffold in the most comprehensive dictionary definitions resource on the web. Generally, a widget that is the only child of another widget does not Definition of scaffold in the dictionary. a raised flat surface Standing on a scaffold, the workers replaced the broken twelfth-story window. Widget's element is moved to the new location. Synonyms for SCAFFOLD: platform, podium, balcony, stand, dais, rostrum, riser, stage, pulpit, tribune. Global key elsewhere in the tree in the previous frame, then that Tissue engineering often involves the use of cells placed on tissue scaffolds in the. 90) define scaffolding as a process that enables a child or novice to solve a task or achieve a goal that would be beyond his unassisted efforts. Widget in the same location), but there was a widget with that same Tissue engineering is a biomedical engineering discipline that uses a combination of cells, engineering, materials methods, and suitable biochemical and physicochemical factors to restore, maintain, improve, or replace different types of biological tissues. When a new widget is found (its key and type do not match a previous To be moved around the tree (changing parent) without losing state. In addition, using a GlobalKey as the widget's key allows the element Tree, the new widget is inflated into an element, and the new element Otherwise, the old element is removed from the (n.) mid-14c., 'temporary wooden framework upon which workmen stand in erecting a building, etc.,' a shortening of an Old North French variant of Old French eschafaut 'scaffold' (Modern French échafaud ), probably altered (by influence of eschace 'a prop, support') from chaffaut, from Vulgar Latin catafalicum. Different types of scaffolds present different types of hazards. Essentially synonymous with the older term Einstellung, mental set is the. It is often determined by instructions but need not be. Falling objects can take unpredictable paths to the ground, so workers should take every precaution to prevent objects from being dropped or knocked off a scaffold platform. a temporary readiness to perform certain psychological functions that influences the response to a situation or stimulus, such as the tendency to apply a previously successful technique in solving a new problem. Operator=, respectively, then the new widget replaces the old widgetīy updating the underlying element (i.e., by calling Element.update Fall protection should be used on scaffolds at all times, regardless of height, experts recommend. If the runtimeType and key properties of the two widgets are Per the documentation for the key property:Ĭontrols how one widget replaces another widget in the tree. Scaffold is just a widget, and the key property of any widget preserves state when that widget is moved in a tree.
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