Download Agile Web Development with Rails (4th edition) by Dave Thomas, David Heinemeier Hansson, Sam Ruby PDF

By Dave Thomas, David Heinemeier Hansson, Sam Ruby

Ruby on Rails is helping you produce top of the range, beautiful-looking internet functions fast. you think about growing the appliance, and Rails looks after the details.

Tens of hundreds of thousands of builders have used this award-winning e-book to benefit Rails. It's a extensive, far-reaching instructional and reference that's urged via the Rails center crew. If you're new to Rails, you'll get step by step suggestions. If you're an skilled developer, this ebook provides you with the great, insider details you need.

Rails has advanced through the years, and this e-book has developed besides it. We nonetheless begin with a step by step walkthrough of establishing a true program, and in-depth chapters examine the integrated Rails beneficial properties. This variation now offers new Ruby and Rails clients additional information at the Ruby language and takes extra time to give an explanation for key recommendations all through. most sensible practices on tips to follow Rails proceed to alter, and this version retains up. Examples use cookie subsidized periods, HTTP authentication, and energetic Record-based types, and the publication focuses all through at the correct strategy to use Rails. also, this version now displays Ruby 1.9, a brand new unencumber of Ruby with vast sensible and function improvements.

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Additional info for Agile Web Development with Rails (4th edition)

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2008) or in neither sex (Richardson et al. 2006; Rimondini et al. 2003). Maternal psychosocial stress also produced conflicting results in male offspring. These were found to be either less anxious (Gotz and Stefanski 2007) or more anxious than controls (Brunton and Russell 2010). The disparate effect of prenatal stress demonstrated in these studies may arise from the amount by which plasma COR increased in response to the stress, and if this remained elevated during the period of the development of the limbic system.

A higher incidence of preterm births (Hayes et al. 2012; Klieger-Grossmann et al. 2012), autism (Croen et al. 2011), irritability (Thormahlen 2006), and lower psychomotor development index (Casper et al. 2003) has been reported in infants of mothers treated with SSRIs, but these symptoms are also seen in those of untreated subjects with depression (Louik et al. 2007). Others were able to differentiate an influence of SSRIs from that of depression on neuronal function. Infants from untreated depressed mothers had significantly lower attention scores than those of nondepressed mothers, while those of drug-treated mothers had a lower gestational age, more hypertonia, and a higher number of central nervous system stress signs than those of either untreated mothers or controls (Salisbury et al.

In contrast to the amelioration of anxiety, rearing by a control foster mother had no effect on the learning deficits or the reduction in LTP in PS males (Yang et al. 2006). This indicated that the effect on learning and synaptic plasticity is prenatally mediated. It has been shown that the anxiety and abnormal regulation of the HPA axis, but not the learning deficits, in PS rats are brought about by raised levels of maternal COR (Barbazanges et al. 1996; Salomon et al. 2011). Chronic maternal stress was shown to increase COR in the mothers’ milk for periods of up to 3 weeks (Pfister and Muir 1989).

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