What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?

javascriptecmascript-6arrow-functionssyntax
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Why should there be spaces around '[' and ']' in Bash?

if-statementsyntaxbash
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Command not found error in Bash variable assignment

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Add a property to a JavaScript object using a variable as the name?

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Are (non-void) self-closing tags valid in HTML5?

htmlsyntaxw3c-validation
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