当我尝试在http://golang.org/pkg/net/http/#example_Get上运行此示例时,它返回以下错误
2009/11/10 23:00:00获取http://www.google.com/robots.txt:拨打tcp:协议不可用
知道为什么吗？
为什么git://有效
$ git clone git://github.com/schacon/grit.git
Cloning into 'grit'...
...
Checking connectivity... done.
但是git @没有
$ git clone git@github.com:schacon/grit.git mygrit
Cloning into 'mygrit'...
Warning: Permanently added the RSA host key for IP address '192.30.252.129' to t
he list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
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我发现附近的搜索会返回不一致的结果.
我有一天跑了这个查询(去客户端lib).它给了我4个结果.特定
关键字=度假村+世界+圣淘沙+逸濠+ 8 + +圣淘沙网关及定位= 1.2564%2C103.8189&rankby =距离&类型=倒伏
https://gist.github.com/haibin/20e01d38c10d4da9275439c549a2db91
我在另一天运行此查询(转到客户端lib).它给了我5个结果.特定
关键字=度假村+世界+圣淘沙+逸濠+ 8 + +圣淘沙网关&语言= EN及定位= 1.2564%2C103.8189&rankby =距离&类型=倒伏
https://gist.github.com/haibin/b40e4952b7fddace78d6c37a19542a40
我今天运行了这个查询(curl).它给了我1个结果.特定
关键字=度假村%20World%20Sentosa%20Equarius%208%20Sentosa%20Gateway&语言= EN及定位= 1.2564%2C103.8189&rankby =距离&类型=倒伏
https://gist.github.com/haibin/a65a6d03ace05898913e306840307bdb
知道为什么吗？
为什么 sum() 的第二个参数可以是空元组？它不应该是根据https://docs.python.org/3/library/functions.html#sum的数字吗？
>>> tmp=((1,2), ('a','b'))
>>> sum(tmp, ())
(1, 2, 'a', 'b')