ruby-2.5

问题 So, I'm well aware of the perils of removing items in an iteration block (this is looping in reverse), and I know Matz mentioned something about mutations in iterations causing stability problems, but I can't seem to figure this one out. This example is a little convoluted and I'm not sure even solving it will replicate the example exactly, but I'll have to try. arr1 = [1, 2, 3, 4, 5] arr2 = [3, 4, 5] puts arr1.inspect puts arr2.inspect arr2.each do |i| arr1.reverse.each_with_index do |j,

问题 environment: windows 10 ruby2.5 rails 5.1.5 problem: cannot load such file -- sqlite3/sqlite3_native (LoadError) I have try gem uninstall sqlite3 and gem install sqlite3 ,any solution on web has been try ,not working,anyone could help me? I need to fix this problem,my work need to move on. Thanks. 回答1: I resolved the problem similar to you. This does work when I require sqlite3 in Ruby. However, when used in Rails, the bundler will install the native version, which doesn't work. I have to run