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By mid 2016, Abramov had joined the React team and passed the primary maintainership on to Mark Erikson and Tim Dorr. [7] In February 2019, useReducer was introduced as a React hook in the 16.8 release. It provides an API that is consistent with Redux, enabling developers to create Redux-like stores that are local to component states.
A checkbox (check box, tickbox, tick box) is a graphical widget that allows the user to make a binary choice, i.e. a choice between one of two possible mutually exclusive options. For example, the user may have to answer 'yes' (checked) or 'no' (not checked) on a simple yes/no question .
Group names (terms) are in bold. Values (definitions) are indented. Each group must include one or more definitions. For a single or first value, the : can be placed on the same line after ; – but subsequent values must be placed on separate lines. Do not use a semicolon (;) simply to bold a line without defining a value using a colon (:).
Key pad of a Nokia 3720. Besides the number keypad and buttons for accepting and declining calls (typically from left to right and coloured green and red respectively), button mobile phones commonly feature two option keys, one to the left and one to the right, and a four-directional D-pad which may feature a center button which acts in resemblance to an "Enter" and "OK" button.
The nephron is the minute or microscopic structural and functional unit of the kidney.It is composed of a renal corpuscle and a renal tubule.The renal corpuscle consists of a tuft of capillaries called a glomerulus and a cup-shaped structure called Bowman's capsule.
It uses one strand (darker orange) as a template to create the single-stranded messenger RNA (green). In molecular biology , RNA polymerase (abbreviated RNAP or RNApol ), or more specifically DNA-directed/dependent RNA polymerase ( DdRP ), is an enzyme that catalyzes the chemical reactions that synthesize RNA from a DNA template.
The Hook, or the Hookman, [1] is an urban legend about a killer with a pirate-like hook for a hand attacking a couple in a parked car. In many versions of the story, the killer is typically portrayed as a faceless, silhouetted old man wearing a raincoat and rain hat that conceals most of his features, especially his face.
The addition and its counterpart, the elimination, are reactions that change the number of substituents on the carbon atom, and form or cleave multiple bonds. Double and triple bonds can be produced by eliminating a suitable leaving group. Similar to the nucleophilic substitution, there are several possible reaction mechanisms that are named ...