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“No X11 DISPLAY variable” - what does it mean?
...p.
Actually, I'm surprised it isn't set automatically. Are you trying to start this application from a non-graphic terminal? If not, have you modified the default .profile, .login, .bashrc or .cshrc?
Note that setting the DISPLAY to :0.0 pre-supposes that you're sitting at the main display, as I...
Convert pandas timezone-aware DateTimeIndex to naive timestamp, but in certain timezone
...own question, this functionality has been added to pandas in the meantime. Starting from pandas 0.15.0, you can use tz_localize(None) to remove the timezone resulting in local time.
See the whatsnew entry: http://pandas.pydata.org/pandas-docs/stable/whatsnew.html#timezone-handling-improvements
So w...
Playing .mp3 and .wav in Java?
..."music.wav"));
Clip clip = AudioSystem.getClip();
clip.open(audioIn);
clip.start();
And play .mp3 with jLayer
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Calculating a directory's size using Python?
...is walks all sub-directories; summing file sizes:
import os
def get_size(start_path = '.'):
total_size = 0
for dirpath, dirnames, filenames in os.walk(start_path):
for f in filenames:
fp = os.path.join(dirpath, f)
# skip if it is symbolic link
if...
How do I compile and run a program in Java on my Mac?
...attempt to call when you tell it to execute your program. Think of it as a starting point for your program. The System.out.println() method will print a line of text to the screen, "Hello World!" in this example.
Using the Compiler
Now that you have written a simple Java program, you need to compi...
Can I specify a custom location to “search for views” in ASP.NET MVC?
...sure you remember to register the view engine by modifying the Application_Start method in your Global.asax.cs
protected void Application_Start()
{
ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new CustomViewEngine());
}
...
Why does the order in which libraries are linked sometimes cause errors in GCC?
...ne important detail to this excellent answer: Using "-( archives -)" or "--start-group archives --end-group" is the only sure-fire way of resolving circular dependencies, since each time the linker visits an archive, it pulls in (and registers the unresolved symbols of) only the object files that re...
Python strptime() and timezones?
...See the following example:
In [1]: from datetime import datetime
In [2]: start_time = datetime.strptime('2018-04-18-17-04-30-AEST','%Y-%m-%d-%H-%M-%S-%Z')
In [3]: print("TZ NAME: {tz}".format(tz=start_time.tzname()))
TZ NAME: None
In [4]: start_time = datetime.strptime('2018-04-18-17-04-30-+1000...
Handler vs AsyncTask
...g AsyncTasks for all background operations in my project. At some point I started reaching that max jobs limit, so my tasks would only start after another finished. In the end I had to change all my structure to stop using asynctasks and avoid reaching that limitation.
– tbra...
Makefile variable as prerequisite
... @esmit: Yes; I should have replied about this. In my solution, the line starts with a TAB, so it's a command in the check-env rule; Make won't expand it unless/until executing the rule. If it doesn't start with a TAB (as in @rane's example), Make interprets it as not being in a rule, and evaluate...