大约有 41,731 项符合查询结果（耗时：0.0380秒） [XML]
Git undo changes in some files [duplicate]
While coding I added print statements into some files to keep track of what was going on.
6 Answers
...
What is the common header format of Python files?
I came across the following header format for Python source files in a document about Python coding guidelines:
4 Answers
...
Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
This is valid C# code
11 Answers
11
...
How to bundle a native library and a JNI library inside a JAR?
The library in question is Tokyo Cabinet .
7 Answers
7
...
How to know if an object has an attribute in Python
Is there a way in Python to determine if an object has some attribute? For example:
14 Answers
...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
I have seen many types of image extensions but have never understood the real differences between them. Are there any links out there that clearly explain their differences?
...
How to pattern match using regular expression in Scala?
I would like to be able to find a match between the first letter of a word, and one of the letters in a group such as "ABC". In pseudocode, this might look something like:
...
Repeat Character N Times
In Perl I can repeat a character multiple times using the syntax:
23 Answers
23
...
How can I check if a command exists in a shell script? [duplicate]
I am writing my first shell script. In my script I would like to check if a certain command exists, and if not, install the executable. How would I check if this command exists?
...
How to get a key in a JavaScript object by its value?
I have a quite simple JavaScript object, which I use as an associative array. Is there a simple function allowing me to get the key for a value, or do I have to iterate the object and find it out manually?
...