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In Scratch 2.0, the extensions were all hardware-based and Pen was a normal category. Software-based extensions were added in Scratch 3.0, such as text-to-speech voices, along with some new hardware-based extensions like the micro:bit. The extensions are listed below. An example of the Scratch 3 Extensions Page.
The most important features that Snap! offers, but Scratch does not, include: Expressions using anonymous functions, represented by a block inside a gray ring, having one or more empty slot(s)/argument(s) that are filled by a "higher order function" (the one that is calling the anonymous one).
Scratch, a small amount of extra money; Old Scratch or Mr Scratch, a figure representing the devil; Scratch building, creation, from raw materials, of architectural scale models; Scratchcard (or scratch card, or scratcher), a small card with one or more areas containing concealed information which can be revealed by scratching off an opaque ...
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While a subject's popularity may suggest notability, it does not automatically guarantee notability in the context of Wikipedia. Though the channel hosting BFDI has over 2.5 million subscribers and over 1.8 billion views, [10] [a] these numbers do not justify the creation of a BFDI article on Wikipedia. Usually, when something is popular, many ...
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Scratch hardness test or scratch test refers to any of a number of methods of measuring scratch hardness. Resistance to abrasion is less affected by surface variations than indentation methods. Scratch hardness is measured with a sclerometer. [1] Attempting to scratch a surface to test a material is a very old technique. [2]