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At runtime, find all classes in a Java application that extend a base class
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You could use ResolverUtil (raw source) from the Stripes Framework
if you need something simple and quick without refactoring any existing code.
Here's a simple example not having loaded any of the classes:
package test;
import java.util.Set;
import ...
How to remove the left part of a string?
...requires section headers to be present
path = config.get(section, 'path', raw=1) # case-insensitive, no interpolation
Other options
str.split()
re.match()
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How to step through Python code to help debug issues?
...llow it: https://github.com/gotcha/ipdb/pull/155
Or alternatively, as in raw pdb 3.2+ you can set some breakpoints from the command line:
ipdb3 -c 'b 12' -c 'b myfunc' ~/test/a.py
although -c c is broken for some reason: https://github.com/gotcha/ipdb/issues/156
python -m module debugging has ...
How to know/change current directory in Python shell?
...tever, you need to double up backslashes if you use them in a regular (non-raw) Python string. Python also lets you use forward slashes instead. Thus, either os.chdir('C:/Users/Ajeya/Documents'), or os.chdir('C:\\Users\\Ajeya\\Documents'), or os.chdir(r'C:\Users\Ajeya\Documents').
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How to convert a PIL Image into a numpy array?
...image implements the __array_interface__ which numpy can use to access the raw bytes of an image without having to pass through an iterator (see github.com/python-pillow/Pillow/blob/… and docs.scipy.org/doc/numpy/reference/arrays.interface.html). You can even just use numpy.array(PIL.Image.open('t...
Why are joins bad when considering scalability?
...atabase used well. There are a number of scalability-friendly ways to take raw joins and make them much faster:
Join on a surrogate key (autonumer/identity column) rather than a natural key. This means smaller (and therefore faster) comparisons during the join operation
Indexes
Materialized/indexed...
Good tutorials on XMPP? [closed]
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I'd rather find something other than the raw protocol, those are written to be precise rather than friendly... but still knowing it covers the fundamentals is useful.
– Mr. Boy
Jun 22 '10 at 11:46
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How to fix “Incorrect string value” errors?
... this problem today by altering the column to 'LONGBLOB' type which stores raw bytes instead of UTF-8 characters.
The only disadvantage of doing this is that you have to take care of the encoding yourself. If one client of your application uses UTF-8 encoding and another uses CP1252, you may have y...
Lists in ConfigParser
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how would this work for raw strings, e.g. key5 : [r"abc $x_i$", r"def $y_j$"] ? They raise the error json.decoder.JSONDecodeError: Expecting value: line 1 column 2 (char 1)
– kingusiu
Apr 9 '19 at 18:09
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When to use a View instead of a Table?
...nctionality as Oracle's "WITH CHECK OPTION" clause directly in the view
Drawbacks
You lose information about relations (primary keys, foreign keys)
It's not obvious whether you will be able to insert/update a view, because the view hides its underlying joins from you
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