大约有 47,000 项符合查询结果（耗时：0.0740秒） [XML]
How do I find out my MySQL URL, host, port and username?
I need to find my MySQL username. When I open the MySQL command line client, it only asks me for my password. I don't remember my username. And for connectivity with JDBC, I need the URL, host and port number. Where do I find all of these?
...
Redis cache vs using memory directly
I have not used Redis yet, but I heard about it and plan to try it as cache storing.
2 Answers
...
Why is document.body null in my javascript?
... that uses body. Not cool.
You want to wrap this code in a window.onload handler or place it after the <body> tag (as mentioned by e-bacho 2.0).
<head>
<title>Javascript Tests</title>
<script type="text/javascript">
window.onload = function() {
...
Catching multiple exception types in one catch block
...ike a cleaner way to obtain the following functionality, to catch AError and BError in one block:
11 Answers
...
How can I escape double quotes in XML attributes values?
...
Explicit and a longer naming convention is better than acronyms or shortened one when naming variables, function, attributes, or etc.; I'll take clarity over brevity anytime - is my unsolicited opinion.
– Daniel ...
Is PHP's count() function O(1) or O(n) for arrays?
...unt the all the elements of a PHP array, or is this value cached somewhere and just gets retrieved?
3 Answers
...
Plot logarithmic axes with matplotlib in python
...
First of all, it's not very tidy to mix pylab and pyplot code. What's more, pyplot style is preferred over using pylab.
Here is a slightly cleaned up code, using only pyplot functions:
from matplotlib import pyplot
a = [ pow(10,i) for i in range(10) ]
pyplot.subplot(...
Create list of single item repeated N times
...ng'] * len(columns)
Mutable items
I've used Python for a long time now, and I have never seen a use-case where I would do the above with a mutable instance. Instead, to get, say, a mutable empty list, set, or dict, you should do something like this:
list_of_lists = [[] for _ in columns]
The un...
How to get the absolute coordinates of a view
...left corner of a view. However, all methods I can find such as getLeft() and getRight() don't work as they all seem to be relative to the parent of the view, thus giving me 0 . What is the proper way to do this?
...
How to beautify JSON in Python?
Can someone suggest how I can beautify JSON in Python or through the command line?
13 Answers
...