大约有 47,000 项符合查询结果（耗时：0.0428秒） [XML]
fork() branches more than expected?
...
answered Jun 21 '12 at 6:58
wallykwallyk
52.3k1111 gold badges7373 silver badges130130 bronze badges
...
How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
...
191
Use INSERT ... ON DUPLICATE KEY UPDATE. For example:
INSERT INTO `usage`
(`thing_id`, `times_...
Plot logarithmic axes with matplotlib in python
...de would look like:
import pylab
import matplotlib.pyplot as plt
a = [pow(10, i) for i in range(10)]
fig = plt.figure()
ax = fig.add_subplot(2, 1, 1)
line, = ax.plot(a, color='blue', lw=2)
ax.set_yscale('log')
pylab.show()
...
animating addClass/removeClass with jQuery
...
316
Since you are not worried about IE, why not just use css transitions to provide the animation a...
UILabel with text of two different colors
...ame
value:[UIColor redColor]
range:NSMakeRange(10, 1)];
[label setAttributedText: text];
I created a UILabel extension to do it.
share
|
improve this answer
|
...
How to create json by JavaScript for loop?
...
174
From what I understand of your request, this should work:
<script>
// var status = do...
How to avoid warning when introducing NAs by coercion
...
142
Use suppressWarnings():
suppressWarnings(as.numeric(c("1", "2", "X")))
[1] 1 2 NA
This su...
Django connection to PostgreSQL: “Peer authentication failed”
...
221
I took a peek at the exception, noticed it had to do with my connection settings. Went back to s...
How to get element by classname or id
...
187
getElementsByClassName is a function on the DOM Document. It is neither a jQuery nor a jqLite ...