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rodericj/gistify76038.m

Created October 24, 2014 19:14
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gistify76038.m
RACSignal *emailTextFieldHoldsEmail = [self.textField.rac_textSignal map:^id(id value) {
return @([value isEmail]);
}];
RAC(self.sendButton, enabled) = emailTextFieldHoldsEmail;
RAC(self.sendButton, alpha) = [emailTextFieldHoldsEmail map:^id(id value) {
return [value boolValue] ? @1 : @.5;
}];
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