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How to find event listeners on a DOM node when debugging or from the JavaScript code?
... to find out which event listeners are observing a particular DOM node and for what event?
19 Answers
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Inject errors into already validated form?
After my form.Form validates the user input values I pass them to a separate (external) process for further processing. This external process can potentially find further errors in the values.
...
Use cases for the 'setdefault' dict method
...dition of collections.defaultdict in Python 2.5 greatly reduced the need for dict 's setdefault method. This question is for our collective education:
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Best way to structure a tkinter application? [closed]
...ented approach. This is the template that I start out with:
# Use Tkinter for python 2, tkinter for python 3
import tkinter as tk
class MainApplication(tk.Frame):
def __init__(self, parent, *args, **kwargs):
tk.Frame.__init__(self, parent, *args, **kwargs)
self.parent = parent
...
Create an empty list in python with certain size
...ion to create a list:
>>> def display():
... s1 = []
... for i in range(9): # This is just to tell you how to create a list.
... s1.append(i)
... return s1
...
>>> print display()
[0, 1, 2, 3, 4, 5, 6, 7, 8]
List comprehension (Using the squares because for ...
Python module for converting PDF to text [closed]
...PDFMiner. It can extract text from PDF files as HTML, SGML or "Tagged PDF" format.
The Tagged PDF format seems to be the cleanest, and stripping out the XML tags leaves just the bare text.
A Python 3 version is available under:
https://github.com/pdfminer/pdfminer.six
...
How to print a dictionary line by line in Python?
...
for x in cars:
print (x)
for y in cars[x]:
print (y,':',cars[x][y])
output:
A
color : 2
speed : 70
B
color : 3
speed : 60
share
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Converting string from snake_case to CamelCase in Ruby
...
If you're using Rails, String#camelize is what you're looking for.
"active_record".camelize # => "ActiveRecord"
"active_record".camelize(:lower) # => "activeRecord"
If you want to get an actual class, you should use String#constantize on top of that.
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How to sort an IEnumerable
...t can be used like IEnumerable<T>, but it extends the type, allowing for example, for the use of ThenBy.
– Maciej Hehl
Sep 2 '10 at 20:11
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In Python, how can you load YAML mappings as OrderedDicts?
...ict at all due to the new dict implementation that has been in use in pypy for some time (although considered CPython implementation detail for now).
Update: In python 3.7+, the insertion-order preservation nature of dict objects has been declared to be an official part of the Python language spec,...