大约有 42,000 项符合查询结果（耗时：0.0705秒） [XML]
Using javadoc for Python documentation [closed]
...
Have a look at the reStructuredText (also known as "reST") format, which is a plaintext/docstring markup format, and probably the most popular in the Python world. And you should certainly look at Sphinx, a tool to generate documentation from reStructuredText (used for eg. the Python ...
How are parameters sent in an HTTP POST request?
...
The values are sent in the request body, in the format that the content type specifies.
Usually the content type is application/x-www-form-urlencoded, so the request body uses the same format as the query string:
parameter=value&also=another
When you use a file uplo...
git undo all uncommitted or unsaved changes
...eckout .
You can also revert uncommitted changes only to particular file or directory:
git checkout [some_dir|file.txt]
Yet another way to revert all uncommitted changes (longer to type, but works from any subdirectory):
git reset --hard HEAD
This will remove all local untracked files, so onl...
delete vs delete[] operators in C++
What is the difference between delete and delete[] operators in C++?
7 Answers
7
...
List of standard lengths for database fields
...
W3C's recommendation:
If designing a form or database that will accept names from people
with a variety of backgrounds, you should ask yourself whether you
really need to have separate fields for given name and family name.
… Bear in mind that names in...
How can I force division to be floating point? Division keeps rounding down to 0?
... int. In Python 3, it produces a float. We can get the new behaviour by importing from __future__.
>>> from __future__ import division
>>> a = 4
>>> b = 6
>>> c = a / b
>>> c
0.66666666666666663
...
What is the difference between an expression and a statement in Python?
...
Expressions only contain identifiers, literals and operators, where operators include arithmetic and boolean operators, the function call operator () the subscription operator [] and similar, and can be reduced to some kind of "value", which can be any Python object. Examples:
3 ...
Why is address zero used for the null pointer?
In C (or C++ for that matter), pointers are special if they have the value zero: I am adviced to set pointers to zero after freeing their memory, because it means freeing the pointer again isn't dangerous; when I call malloc it returns a pointer with the value zero if it can't get me memory; I use ...
Are delphi variables initialized with a value by default?
...ehaviour:
Object fields are always initialized to 0, 0.0, '', False, nil or whatever applies.
Global variables are always initialized to 0 etc as well;
Local reference-counted* variables are always initialized to nil or '';
Local non reference-counted* variables are uninitialized so you have to as...
How to check if function exists in JavaScript?
...typeof me.onChange !== "undefined") {
// safe to use the function
}
or better yet (as per UpTheCreek upvoted comment)
if (typeof me.onChange === "function") {
// safe to use the function
}
share
|
...