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Discussion on: Mastering Hard Parts of JavaScript: Callbacks I

deryckhenson profile image
Deryck Henson

better yet, typeof initialValue !== 'undefined' so you avoid touching arguments at all

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semigradsky profile image
Dmitry Semigradsky

initialValue can be undefined

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deryckhenson profile image
Deryck Henson

yes...but accum = initialValue loses its purpose if it is.