大约有 43,000 项符合查询结果（耗时：0.0483秒） [XML]
SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
I am trying to do the Michael Hartl tutorial. When I attempt to install rails 3.2.14 in my gemset, I get the following issue:
...
How to write a Ruby switch statement (case…when) with regex and backreferences?
I know that I can write a Ruby case statement to check a match against a regular expressions.
However, I'd like to use the match data in my return statement. Something like this semi-pseudocode:
...
How to calculate the running time of my program? [duplicate]
I wrote a program and now I want to calculate the total running time of my program from start to end.
6 Answers
...
Check Whether a User Exists
I want to create a script to check whether a user exists. I am using the logic below:
17 Answers
...
MySQL INNER JOIN select only one row from second table
... user, those of which have payments, may have multiple associated payments in the payments table. I would like to select all users who have payments, but only select their latest payment. I'm trying this SQL but i've never tried nested SQL statements before so I want to know what i'm doing wrong. ...
Git: How to return from 'detached HEAD' state
...
git checkout master
to get out of detached HEAD state.
Generally speaking: git checkout <branchname> will get you out of that.
If you don't remember the last branch name, try
git checkout -
This also tries to check out your last checked out branch.
...
How do I convert a NSString into a std::string?
I have an NSString object and want to convert it into a std::string .
3 Answers
3
...
XPath OR operator for different nodes
...
"|" is not really an "OR operator" in XPath.It permits you to build a nodeset composed from substrees of a whole XML tree. "//book|//cd" means among all child nodes and descendant of the root node find all ones named 'book' then find also all named 'cd'. If ...
Turn off autosuggest for EditText?
... programmatically turn off that autosuggest list which pops up as you type in EditText?
14 Answers
...
UITableView backgroundColor always gray on iPad
When I set the backgroundColor for my UITableView it works fine on iPhone (device and simulator) but NOT on the iPad simulator. Instead I get a light gray background for any color I set including groupTableViewBackgroundColor .
...