Shares gained on Friday and bond yields fell from the United States to Europe as investors shrugged off rising U.S. consumer prices, even as fears of longer-term inflation lingered. London shares gained 0.6%, helped by a 1% gain for the mining sector, while Paris climbed 0.4%. Also boosting sentiment in Europe was the European Central Bank on Thursday raising its growth and inflation projections, while pledging a steady flow of stimulus for now.