大约有 42,000 项符合查询结果（耗时：0.0408秒） [XML]
How to tell which version of a gem a rails app is using
I'm investigating a rails app - the prod server has two version of a specific gem installed, how can I tell which version the prod app is using?
...
What's the difference between equal?, eql?, ===, and ==?
I am trying to understand the difference between these four methods. I know by default that == calls the method equal? which returns true when both operands refer to exactly the same object.
...
How to count the number of set bits in a 32-bit integer?
...
55 Answers
55
Active
...
How do I tell if a regular file does not exist in Bash?
I've used the following script to see if a file exists:
20 Answers
20
...
Best way to structure a tkinter application? [closed]
The following is the overall structure of my typical python tkinter program.
7 Answers
...
Why does Git treat this text file as a binary file?
...
14 Answers
14
Active
...
How to build a query string for a URL in C#?
A common task when calling web resources from a code is building a query string to including all the necessary parameters. While by all means no rocket science, there are some nifty details you need to take care of like, appending an & if not the first parameter, encoding the parameters etc.
...
How do I set default values for functions parameters in Matlab?
Is it possible to have default arguments in Matlab? For instance, here:
16 Answers
16...
How would one write object-oriented code in C? [closed]
What are some ways to write object-oriented code in C? Especially with regard to polymorphism.
32 Answers
...
Why is Java Vector (and Stack) class considered obsolete or deprecated?
Why is Java Vector considered a legacy class, obsolete or deprecated?
5 Answers
5
...