I've been a professional C, Perl, PHP and Python developer.
I'm an ex-sysadmin from the late 20th century.
These days I do more Javascript and CSS and whatnot, and promote UX and accessibility.
isEmail sounds weird because it's too generic. For most purposes you'll be validating a user's input, and if they put in foo@example.com that may be a valid email address but it's not valid for use as such in the context of your app.
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isEmailsounds weird because it's too generic. For most purposes you'll be validating a user's input, and if they put infoo@example.comthat may be a valid email address but it's not valid for use as such in the context of your app.