大约有 26,000 项符合查询结果（耗时：0.0461秒） [XML]
Possible to iterate backwards through a foreach?
I know I could use a for statement and achieve the same effect, but can I loop backwards through a foreach loop in C#?
...
Convert string to Python class object?
Given a string as user input to a Python function, I'd like to get a class object out of it if there's a class with that name in the currently defined namespace. Essentially, I want the implementation for a function which will produce this kind of result:
...
How can I output leading zeros in Ruby?
I'm outputting a set of numbered files from a Ruby script. The numbers come from incrementing a counter, but to make them sort nicely in the directory, I'd like to use leading zeros in the filenames. In other words
...
Check if $_POST exists
I'm trying to check whether a $_POST exists and if it does, print it inside another string, if not, don't print at all.
14 ...
Exit codes in Python
I got a message saying script xyz.py returned exit code 0 . What does this mean?
13 Answers
...
How to 'insert if not exists' in MySQL?
I started by googling, and found this article which talks about mutex tables.
10 Answers
...
What does [].forEach.call() do in JavaScript?
I was looking at some snippets of code, and I found multiple elements calling a function over a node list with a forEach applied to an empty array.
...
Creating an empty file in C#
What's the simplest/canonical way to create an empty file in C#/.NET?
7 Answers
7
...
How to print a stack trace in Node.js?
Does anyone know how to print a stack trace in Node.js?
11 Answers
11
...
How do I get the logfile from an Android device?
I would like to pull the log file from a device to my PC. How can I do that?
13 Answers
...