大约有 10,190 项符合查询结果（耗时：0.0224秒） [XML]
Select row with most recent date per user
I have a table ("lms_attendance") of users' check-in and out times that looks like this:
11 Answers
...
How to initialize a struct in accordance with C programming language standards
I want to initialize a struct element, split in declaration and initialization. This is what I have:
15 Answers
...
How can I determine the URL that a local Git repository was originally cloned from?
I pulled a project from GitHub a few days ago. I've since discovered that there are several forks on GitHub, and I neglected to note which one I took originally. How can I determine which of those forks I pulled?
...
sql primary key and index
Say I have an ID row (int) in a database set as the primary key. If I query off the ID often do I also need to index it? Or does it being a primary key mean it's already indexed?
...
How to find the port for MS SQL Server 2008?
I am running MS SQL Server 2008 on my local machine. I know that the default port is 1433 but some how it is not listening at this port. The SQL is an Express edition.
...
Bash empty array expansion with `set -u`
I'm writing a bash script which has set -u , and I have a problem with empty array expansion: bash appears to treat an empty array as an unset variable during expansion:
...
Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:
My problem: I have a superview EditView that takes up basically the entire application frame, and a subview MenuView which takes up only the bottom ~20%, and then MenuView contains its own subview ButtonView which actually resides outside of MenuView 's bounds (something like this: Button...
rvm installation not working: “RVM is not a function”
I just installed RVM, but can't make it work. I have such line at the end of my .profile file:
21 Answers
...
Propagate all arguments in a bash shell script
I am writing a very simple script that calls another script, and I need to propagate the parameters from my current script to the script I am executing.
...
How to do ssh with a timeout in a script?
I'm executing a script connecting via password-less SSH on a remote host. I want to set a timeout, so that if the remote host is taking an infinite time to run, I want to come out of that ssh session and continue other lines in my sh script.
...