小编Suc*_*tha的帖子

如何将MongoDB集合中的所有记录导出到.csv文件中？

mongoexport --host localhost --db dbname --collection name --type=csv > test.csv

这要求我指定我需要导出的字段的名称.我可以直接导出所有字段而不指定字段名称吗？

我正试图按照他们网站上的描述设置Jasmine Gem.运行后:

bundle exec jasmine init

我收到一个错误:

/Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/railties-3.1.0.rc1/lib/rails/railtie/configurable.rb:4:in `<module:Configurable>': uninitialized constant ActiveSupport::Concern (NameError)
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/railties-3.1.0.rc1/lib/rails/railtie/configurable.rb:3:in `<class:Railtie>'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/railties-3.1.0.rc1/lib/rails/railtie/configurable.rb:2:in `<module:Rails>'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/railties-3.1.0.rc1/lib/rails/railtie/configurable.rb:1:in `<top (required)>'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/railties-3.1.0.rc1/lib/rails/railtie.rb:129:in `inherited'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/jasmine-1.0.2.1/lib/jasmine/railtie.rb:3:in `<module:Jasmine>'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/jasmine-1.0.2.1/lib/jasmine/railtie.rb:2:in `<top (required)>'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/jasmine-1.0.2.1/lib/jasmine.rb:12:in `require'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/jasmine-1.0.2.1/lib/jasmine.rb:12:in `<top (required)>'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/jasmine-1.0.2.1/bin/jasmine:4:in `require'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/gems/jasmine-1.0.2.1/bin/jasmine:4:in `<top (required)>'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/bin/jasmine:19:in `load'
from /Users/sts-158imac/.rvm/gems/ruby-1.9.2-p180@fmn/bin/jasmine:19:in `<main>'

使用Netbeans或Eclipse,我会Ctrl点击函数名称转到方法定义.Textmate中有没有这方面的捷径？

我正在使用github的git存储库.使用存储库中的所有提交和日志,现在我需要删除特定用户(例如User1)的所有提交.如何删除他的所有提交？

可以理解的是,由于数据库模式较少,我们无法做到但是如果我们采用一条记录,例如db.collectionname.findOne(),则它不是模式较少的.它有固定的属性.如何减少该属性？