大约有 47,000 项符合查询结果（耗时：0.0676秒） [XML]
Is #pragma once part of the C++11 standard?
...
109
#pragma once is not standard. It is a widespread (but not
universal) extension, which can be u...
List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
... it:
new_list = old_list[:]
Alex Martelli's opinion (at least back in 2007) about this is, that it is a weird syntax and it does not make sense to use it ever. ;) (In his opinion, the next one is more readable).
You can use the built in list() function:
new_list = list(old_list)
You can use ge...
Regex expressions in Java, \\s vs. \\s+
...
answered Mar 25 '13 at 22:02
Óscar LópezÓscar López
207k3131 gold badges278278 silver badges358358 bronze badges
...
Loop through files in a folder using VBA?
... would like to loop through the files of a directory using vba in Excel 2010.
6 Answers
...
How does one make an optional closure in swift?
...
answered Jun 24 '14 at 20:46
CezarCezar
49.8k1616 gold badges8383 silver badges8686 bronze badges
...
express.js - single routing handler for multiple routes in a single line
... |
edited Jun 8 '17 at 13:00
answered Sep 26 '14 at 11:18
K...
What is difference between sjlj vs dwarf vs seh?
...
answered Mar 28 '13 at 15:03
olloollo
22.3k1212 gold badges8989 silver badges143143 bronze badges
...
android button selector
...droid:background="@drawable/selector_xml_name"
android:layout_width="200dp"
android:layout_height="126dp"
android:text="Hello" />
and done.
Edit
Following is button_effect.xml file in drawable directory
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="h...
why is plotting with Matplotlib so slow?
...ort matplotlib.pyplot as plt
import numpy as np
import time
x = np.arange(0, 2*np.pi, 0.01)
y = np.sin(x)
fig, axes = plt.subplots(nrows=6)
styles = ['r-', 'g-', 'y-', 'm-', 'k-', 'c-']
lines = [ax.plot(x, y, style)[0] for ax, style in zip(axes, styles)]
fig.show()
tstart = time.time()
for i in ...
How to expire session due to inactivity in Django?
... now = datetime.now()
if (now - last_activity).minutes > 10:
# Do logout / expire session
# and then...
return HttpResponseRedirect("LOGIN_PAGE_URL")
if not request.is_ajax():
# don't set this for ajax requests or else your
...