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Allowed characters in Linux environment variable names
...ecial characters as a part of a variable name. However when one program or script (e.g. java or perl) initializes a variable with special characters in its name and calls another executable (a child process) the latter executable can access that variable without problems.
– o...
How can I get useful error messages in PHP?
Quite often I will try and run a PHP script and just get a blank screen back. No error message; just an empty screen. The cause might have been a simple syntax error (wrong bracket, missing semicolon), or a failed function call, or something else entirely.
...
Show AlertDialog in any position of the screen
When we show an AlertDialog in android it shows in the center of the screen. Is there any way to change the position?
4 An...
Doing something before program exit
...ion or something that will be executed before your program quits? I have a script that will be constantly running in the background, and I need it to save some data to a file before it exits. Is there a standard way of doing this?
...
ctypes - Beginner
...ssuming the path to the shared library in the same directory as the Python script,
import numpy.ctypeslib as ctl
import ctypes
libname = 'testlib.so'
libdir = './'
lib=ctl.load_library(libname, libdir)
py_add_one = lib.add_one
py_add_one.argtypes = [ctypes.c_int]
value = 5
results = py_add_one(val...
How to turn off INFO logging in Spark?
...he AWS EC2 guide and I can launch the program fine using the bin/pyspark script to get to the spark prompt and can also do the Quick Start quide successfully.
...
What is the minimum I have to do to create an RPM file?
...ompany.com/
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root
%description
%{summary}
%prep
%setup -q
%build
# Empty section.
%install
rm -rf %{buildroot}
mkdir -p %{buildroot}
# in builddir
cp -a * %{buildroot}
%clean
rm -rf %{buildroot}
%files
%defattr(-,root,root,-)
%config(nor...
“TypeError: (Integer) is not JSON serializable” when serializing JSON in Python?
...ently i got the same error. After lot of surfing this solution helped me.
alerts = {'upper':[1425],'lower':[576],'level':[2],'datetime':['2012-08-08 15:30']}
def myconverter(obj):
if isinstance(obj, np.integer):
return int(obj)
elif isinstance(obj, np.floating):
...
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
...ood rule of thumb I was taught is to use the "unicode sandwich" idea. Your script accepts bytes from the outside world, but all processing should be done in unicode. Only when you are ready to output your data should it be mushed back into bytes!
– Andbdrew
Mar...
How to find the width of a div using vanilla JavaScript?
...;
var half=(width/2);
if(x>half)
{
// alert('right click');
gallery.next();
}
else
{
// alert('left click');
gallery.prev();
}
}
...