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What does “S3 methods” mean in R?
...:
setting the class of objects of
interest (e.g.: the return value of a
call to method glm has class glm)
providing a method with the general
name (e.g. print), then a dot, and
then the classname (e.g.:
print.glm)
some preparation has to have been
done to this general name (print)
for this to work...
How to get first and last day of previous month (with timestamp) in SQL Server
...
@Thiru Not all SQL softwares allow for 3 arguments in the DATEDIFF() function. I know SQL Server does, but I'm not sure that MySQL does.
– daOnlyBG
May 22 '17 at 15:14
...
How to convert QString to std::string?
...
QString qs;
// Either this if you use UTF-8 anywhere
std::string utf8_text = qs.toUtf8().constData();
// or this if you're on Windows :-)
std::string current_locale_text = qs.toLocal8Bit().constData();
The suggested (accepted) method may work if you specify codec.
See: http://doc.qt.io/qt-5/q...
bundle install fails with SSL certificate verification error
... enough from this answer everyone should know that this should have been fixed.
re: via Ownatik again bundle install fails with SSL certificate verification error
gem update --system
My answer is still correct and left below for reference if that ends up not working for you.
Honestly the best...
Developing GUIs in Python: Tkinter vs PyQt [closed]
...o be available under a compatible license, under the terms of Nokia's GPL Exception, or under a commercial license (which costs money). This is in contrast to Qt, which is now available under the LGPL.
PyQt is not included by default with Python installations. You're going to have to package the li...
How to get the current URL within a Django template?
...full_path }} # - with GET parameters
Old:
## settings.py
TEMPLATE_CONTEXT_PROCESSORS = (
'django.core.context_processors.request',
)
## views.py
from django.template import *
def home(request):
return render_to_response('home.html', {}, context_instance=RequestContext(request))
## tem...
How to check the version of GitLab?
... answered Mar 3 '14 at 4:03
MaximMaxim
9,27155 gold badges2424 silver badges4141 bronze badges
...
What is the difference between LL and LR parsing?
...te by hand, but they are less powerful than LR parsers and accept a much smaller set of grammars than LR parsers do. LR parsers come in many flavors (LR(0), SLR(1), LALR(1), LR(1), IELR(1), GLR(0), etc.) and are far more powerful. They also tend to have much more complex and are almost always gene...
BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble_23.html
参考低功耗蓝牙（BLE）安全初探
0x1 信道BLE的物理通道即“频道，分别是‘f=2402+k*2 MHz, k=0, … ,39’，带宽为2MHz”的40个RF Channel。
其中，有3个信道是advertising channel（广播通道）...
How to test my servlet using JUnit
...ckito to have the mock return the correct params, verify they were indeed called (optionally specify number of times), write the 'result' and verify it's correct.
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
import java.io.*;
import javax.servlet.http.*;
import org.apache....