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Changing the current working directory in Java?
... "user.dir". The key part to understand is that getAbsoluteFile() must be called (as shown below) or else relative paths will be resolved against the default "user.dir" value.
import java.io.*;
public class FileUtils
{
public static boolean setCurrentDirectory(String directory_name)
{
...
Open URL under cursor in Vim with browser
...
echo "No URI found in line."
endif
endfunction
map <leader>u :call HandleURL()<cr>
Note: If you are not on the Mac, use gnome-open/xdg-open for Linux, or 'path to your web browser' for Windows
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How to create index on JSON field in Postgres?
...
Found:
CREATE TABLE publishers(id INT, info JSON);
CREATE INDEX ON publishers((info->>'name'));
As stated in the comments, the subtle difference here is ->> instead of ->. The former one returns the value as text, the latter as a JSON obj...
What is a Windows Handle?
... an index into a table of pointers... you use the index for the system API calls, and the system can change the pointer in the table at will.
Alternatively a real pointer may be given as the handle when the API writer intends that the user of the API be insulated from the specifics of what the addr...
Parse config files, environment, and command-line arguments, to get a single collection of options
...onf is,
--foo
bar
You can even have your code look for foo.conf automatically by modifying argv
if os.path.exists('foo.conf'):
argv = ['@foo.conf'] + argv
args = argparser.parse_args(argv)
The format of these configuration files is modifiable by making a subclass of ArgumentParser and addi...
Android Studio - How to increase Allocated Heap Size
...
I looked at my Environment Variables and had a System Variable called _JAVA_OPTIONS with the value -Xms256m -Xmx512m, after changing this to -Xms256m -Xmx1024m the max heap size increased accordingly.
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Font from origin has been blocked from loading by Cross-Origin Resource Sharing policy
...er add Access-Control-Allow-Origin "*"
even better, as suggested by @david thomas, you can use a specific domain value, e.g.
Header add Access-Control-Allow-Origin "your-domain.com"
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imp...
How to document class attributes in Python? [closed]
...ty has a specific meaning in python. What you're talking about is what we call class attributes. Since they are always acted upon through their class, I find that it makes sense to document them within the class' doc string. Something like this:
class Albatross(object):
"""A bird with a flig...
Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception
...
I don't think so, necessarily. IDisposable technically is meant to be used for things that have non-managed resources, but then the using directive is just a neat way of implementing a common pattern of try .. finally { dispose }.
A purist would argue 'yes - it's abusive',...
Uncatchable ChuckNorrisException
.... But if it's not specified in the standard whether it CAN be caught, it's called undefined behavior, because other implementations of Java might choose to make it non-catchable.
– heinrich5991
Dec 15 '12 at 12:39
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